Who are your favorite builders/makes your favorite guns?

Alright I know there are tons of other contests and things that are similar all relating mainly to skill so I decided to mix it up a little and ask for more opinion than anything. Who are your favorite builders or at least make you favorite guns? They don't have to be the best guns. This means you don't really need to be a knexpert (although your chances increase) to be "nominated". By the way just for the fun of it to show popular builders I'll add one's avatar after they have been "favorited" 5 times or more. ( I know I won't be right away or maybe not at all but I do want this topic to pass through the filter easier) Alright don't be offended if you're not on here it doesn't mean you aren't good in my eyes. In no particular order... Dsman- Well we are sort of friends in a way so I do look forward to what he makes. We are sort of rivals in a way.Extreme Builder- He's got quite a few innovative designs. He is one of the few people I wanted to take the exact mech or gun and make it.I_am_Canadian- I guess I like him more as a person than for his knex but the combination just overall makes him a favorite.Trauts- Another fellow replicator and that's what I'm all about...mostly.Uh I can't think up any others right now so give me a while. I'd like to say I respect all those who used parts or ideas from my guns for theirs ;pBakenbitz- Well he made the mech that inspired EB's full auto mech. He also made the BBKWG which I find a great gun to compete against for highest rating...if my ratings didn't get attacked by jealous people.P.S. There is no limit...well don't go over board. I'd say pick around 4-6. Don't forget to give a reason why.Oh and my name is TheDunkis like The Dunkis. If anything you capitalize the D in Dunkis. You can address me just as Dunkis when you talk to me as I use The just to emphasize that I'm the only Dunkis. But when you mention me in 3rd person use The Lol and there is your long lesson on how to use my name.

Posted by TheDunkis 9 years ago


Why Knex bullpups are (mostly) useless and a stupid idea.

So in the real world the point of a bullpup design is to either reduce the overall length of a gun, or to have the same length of gun but with a longer barrel, which results in a higher velocity bullet which can go further.  Another often added bonus is that the gun is more balanced weight wise around the handle, making it easier to handle.   Now to crush your dreams. Not a single on of those advantages carries over to knex guns.  Not one.  A bullpup knex gun will only end up longer(yes LONGER), use more parts, have theoretically lower range, it is less balanced, and more complicated with more things that can go wrong.   With a knex gun, you want as short of a barrel as possible for the shot to go through, so that there is as little friction as possible on it.  This is one reason that turret guns can be so powerful.  Now with a bullpup design, you almost automatically have to add a longer barrel, as the shot has to leave the action area AND go over your handle/trigger mech.  Not good. The gun will be less balanced because now basically the entire gun is behind the handle, unless you put some fat barrel on the front to balance it out, but then that breaks the first point I talked about, as well as using many more parts and defeating the purpose of being a shorter weapon.  Most ram guns now are mostly balanced, as the handle is usually in the middle of the gun, as the ramrod has to be pulled behind it as well as going in front of it, so you place the handle and trigger as close to the middle so as to make the trigger simpler. Now as to why making a knex bullpup will make it longer, just look at the pictures.  It will make sense then.  Also this is why you need many more parts for a gun like this.  Also the stock becomes disgustingly long. And finally, this is more of a design issue than a complete flaw, but the trigger is usually(USUALLY) weaker and more prone to failure/not working correctly with a bullpup gun.   Now this doesn't apply to everthing.  Slingshot guns and repeating slingshot guns actually benefit from a bullpup design, that will actually make them shorter and more balanced, because they are more similar to real guns in their layout in that the shot/magazine is the farthest part back in the mechanism.  Also replicas, well duh.   The pictures should make this all make more sense.  And I assumed a build for performance, so the pin draw is long and the magazine is as far away from the pin as possible.  Because all knex guns should be built like that.

Posted by TheRacker 4 years ago


Solder sucker?

Hello all.  I had a question about desoldering.  First thing is that I have desoldering wick.  I found out I was using it wrong.  I melted the solder and then placed the end of the wick in the melted solder.  But I watched a youtube video and according to that I should place the wick on the solder and then heat up the wick and solder as one.  But this still has not been working very well for me.  The wick is over a year old and I was wondering if this could be a problem.  But my other question is how well do those spring loaded solder suckers work?  I was thinking about perhaps ordering one off of e-bay.  Yes I know I might find one in a good hardware store but I have some paypal money I could use.  In case you do not know what I am talking about....it is the spring loaded suckers where you cock it, put it next to the melted solder and then press a button and it forms a vacuum and sucks up the solder into it.  I think I can pick one up for a few bucks off-line, so if you people say they work well then I will give it a shot. Also in case you want to know what I am working on.  This would be used for salvaging parts of of circuit boards.  Like right now I am trying to salvage a few capacitors and also a couple of flyback transformers from crt computer monitors.  Also tomorrow I am tearing apart a broken water cooler to see if there is anything I can take out of there. I have also being having a problem getting solder to melt in the first place.  But that probably just has something to do with the 2 soldering irons I am using and I am trying my best to figure it all out.  I know my way around computers as far as building and repairing them.  But soldering and desoldering is something I really want to learn to be able to further my computer repair skills.  Sometimes it would save so much money being able to solder and desolder myself.  Especially those darn ac ports that are soldered right onto the boards sometimes. I have not actually made anything from this site yet.  But this is a wonderful site and after cruzing the forums here I am pretty sure I will get some good replies.  Ok I will stop babbling and I look forward to your replies.  

Posted by jcaresheets 5 years ago


Fuel economy of the world's longest in-service ship

The Emma Maersk is the second longest ship in the world, and the longest currently in service. It's so large, it looks photoshopped into any picture it appears. Driving such a large ship requires a lot of power. From Wikipedia:The Emma Maersk is powered by a Wartsila-Sulzer 14RTFLEX96-C engine, currently the world's largest single diesel unit, weighing 2,300 tons and capable of 109,000 horsepower (82 MW). The ship has several features to protect the environment. This includes recycling the exhaust, mixed with fresh air, back into the engine for reuse. This not only increases efficiency by as much as 12% but also reduces engine emissions. Instead of biocides, used by much of the industry to keep barnacles off of the hull, a special silicone-based paint is used. This increases the ship's efficiency by reducing drag while also protecting the ocean from biocides that may leak. The silicone paint covering the part of the hull below the waterline is credited for lowering the water drag enough to save 1200 tons of fuel per year.We started talking about energy consumption after watching a practice version of Saul's upcoming E-Tech Keynote, Energy Literacy, and Dave Culp of Kiteship and Speed Sailing did a back-of-the-envelope MPG calculation for this ship:A few more facts about Emma Maersk:Running at her rated 80 Mw, her main engines burn 14 tons of residual fuel each hour. Annually, that's 97,400 tons of fuel. Her auxiliaries, delivering their full 30 Mw, burn an additional 6.6 tons/hour, for a total fuel burn of 20.6 tons/hour. Given 290 steaming days/year (80% capacity factor, which is conservative), this yields a total annual usage of 143,400 tons or about $64.5 million in annual fuel costs.Burning 20.6 tons/hour = 6724 gals/hour. At 31 kts/hour, this equals .0046 nautical miles/gallon. At 6076 ft/nautical mile, that's 28 feet/gallon of fuel burned.The 1200 tons saved by her "revolutionary" bottom paint represents a bit less than 1% of this cost, so increases her fuel mileage to 28.2 feet/gallon.Dave concludes:You gotta haul a lot of containers full of $7 tee shirts to make this profitable.28 feet/gallon!Images from jtashipphoto.dk and Wikipedia.

Posted by ewilhelm 10 years ago


AC Wall Unit Timer/Thermostat

I have an older AC wall unit in my apartment. It has 3 dials – one for temperature (1-8 where 8 is coldest), one for fan speeds (low cold, high cold, low fan, high fan), and a manual lever that opens the vent in the back. I’m reciting this by memory as I haven’t actually looked at it closely, but it has one of the larger 3 pronged cables that plugs into a dedicated outlet in my wall (perhaps used for a higher voltage). In any case, my intentions are as follows:    • Have a timer for the AC unit to plug into to turn off on programmable intervals           o Monday – Friday it will be on after 6:00pm until 7:00am the following morning.    • One nice feature would be to give it a thermostat capability.           o If the temperature is below 70 degrees during these time intervals, for instance, then the AC unit will shut off, otherwise it will power back on.    • Another obscure (and I’m sure complex) feature would be to allow remote access to the timer. I know that this requires some unique hardware, but I’m familiar with programming and can visualize the methodology in telling the timer/thermostat unit a different set of commands (let’s say I know that I’m coming home early – I send information to the device via the internet to have it turn on a few minutes before I get home). I understand the last part is quite complex, but it’s not a priority at all, rather, a neat little feature that would make this all the more worthwhile (and in my eyes more interesting). I know that there is a similar device out there (can’t remember the brand name) that has a lot of these features, but I’m not willing to drop $300+ on something like that. For now, my priorities are listed in order per the bullets. First and foremost is being able to program a timer for a wall AC unit. Second is to have it detect the temperature of the room and set it accordingly. And third is the availability to ‘talk’ to the device remotely. My question for you is: how can I get through the logistics on this sort of project? What components (hardware) am I looking at (general price range), and what degree of difficulty will this entail? I have my computer practically right next to my AC unit, so communication with the device won’t be difficult in those regards. Otherwise, I’m just looking for tips and pointers. If someone happens to know of a (cheap) unit that does most everything that I’m looking for, then great. I’m all ears and really appreciate any feedback.

Posted by Phoenix5794 5 years ago


Create Scholarship Entry: Hearing Impaired

My project is designed to solve a personal problem. One I'm sure others struggle with. I am hard of hearing.My proposed project is for the iRobot to find me and tell me, via an LCD screen or similar visual, that the phone or doorbell is ringing. In order to keep the search path short, to start, in my house I'm thinking about using either virtual wall, which I can't afford, or a line down the hallway to the bed. When something is out of focus you can frequently stare at it until it comes into focus or you can ask someone what the sign says. With hearing loss you eventually realize you don't know you didn't hear something because people start yelling at you for ignoring them. Sound is fleeting. Usually only lasts a fraction of a second. I hear less that half of what most people hear. Without my hearing aids I can only hear the noisiest birds if they are about 20 feet or less from me. I can only hear my phone ring if I am within 15 feet of it and I have the volume all the way up. To talk on the phone, I have one that is relatively new and have the volume all the way up. Those 90db alarms, I need to be within 5 feet of them to hear them. The smoke alarm in the kitchen, I can hear it but it isn't going to wake me. A fire in the kitchen isn't going to trigger the alarm in the bedroom soon enough. It probably won't be loud enough to wake me, anyway.My house didn't have a doorbell when I moved in and I can't hear someone knock unless I have my hearing aids on and am within 10 feet of the door. After missing numerous UPS deliveries I installed a wireless doorbell and I carry the receiver, pager style, with me all day when I am expecting a delivery. And I have even missed UPS with that. If the water is running, the TV or radio is on, it is even more likely that I will not hear the phone or doorbell. If I'm in the bathroom even with the door open I don't have any idea what is happening on the other side of the doorway.A security system with cameras and sensors and a DVR would be ideal. But not in my budget. It might help me with my thieving neighbors.I have thought about getting a dog to help me but I have three rabbits and cannot afford another pet on my disability income. That would probably be a good solution. I own my own home, ok the bank owns it and lets me live here, but if I have to move into a rental most landlords do not allow pets. A robot would not be an issue.If I had a robot that could find me and let me know what is going on in my house it would be very useful. People do not wear hearing aids to bed. I don't usually wear my hearing aids at home to save on batteries. And because the feedback drives me crazy. I just turn the TV or radio up REALLY, REALLY LOUD. Sorry neighbors, it's not my intent to be annoying.I custom built the computer I am using. I have some experience programming simple robots such as the Parallax Boe-Bot. Most recently I built the miniPOV and mintyBoost from AdaFruit. I have 6 years experience as UNIX sysadmin and configuration management. I also have basic hardware and soldering experience. If I have enough time I would like to have it bring me the phone and have a microphone and speaker to talk to the person at the door. I would definitely like to add smoke and co2 detection but I noticed there are quite a few people taking that on and so I will leave that to the end. Maybe teach it to do a little dance, sing a little song, get down tonite. I could wrap it in mirrors, turn it into a floor disco ball. A different dance and sounds for each alert.A robot that could notify me of doorbell and phone events would make my life easier. I'd be inclined to sleep with it. If it could help clean up after the rabbits and ride herd on them I might worship it. Rosie the Robot, Rabbit Wrangler and goddess. If it could also keep me safe from intruders, fires, gas leaks and such. Heck I'll bear it's child! Shall I name it Proteus? or Alfred? Have you ever seen the movie Demon Seed? Classic.I took my time writing up my proposal to do some research and make sure I have the necessary skills and resources to accomplish this task. They warned us in the challenge. I also wanted to have something unique, although there can be many approaches to solving the same problem. If I do win one of the scholarships I will be interested in your suggestions about how to solve this project.

Posted by SacTownSue 10 years ago


Knex Firepower Standard

Hello everyone I (like alot of my freinds) get tired of... oh why dont you just search "Knex gun" and look at the mini descriptions and read them all, or maybe most and think what alot have us geting tired of, Go ahead! see you in maybe a min or 2? just click back or whatever to return here! and continue from where you last read.Welcome back! Do you see what what I'm talking about? well there are two things and if you did not notice these things feel free to look again!And what is Sypran talking about? (drumroll) the Quotes "It's very powerful" "easy yet powerful knex gun" "gun shoots about 60-70 feet" "this is a very small gun but will fire about 50 feet" "A deadly knex gun" and that is just the first page! i could go on for hours (ok maybe a long time) of coppy and pasteing these quotes!honestly i see to much "easy yet powerfuls" i cant realy tell what is powerful! so what do we do? well we take out time building maybe some and it turns to be not that great or it is great!, or we rush to see if KILLERK, Mepain, Extreme builder, Trainman2000 (i will always call him that >=D)You (aka mykhailo),Perfect duck,loosewire,Dsman19(i cant rember numbers) Oodalumps, am i forgeting anyone? (tell me if i am) has any new ideas/guns.so what do we need to do? WE NEED A FIREPOWER STANDARD something simple like 1-20 and how to mesure it, in earth science they clasify rocks hardnes by what they scratch (nail 2.5 glass 5.5 and so on) we need it something like paper peice, but not that for some guns have alot of power but cant peice due to low velocity and or dull non sharpened bullets.also if you know anything about real guns the bigger the bullet, the more powerful =D but the smaller the bullet the higher peirce rateing (a 0mm would be the best peirce but little damage) so in other words the biger the bullet (45 cal example) the more stoping power it will have but less muzzle velocity (pierceing ability) wile the smaller (7mm) the knocking over/stoping power is anything to be desired, but it will have high muzzle velocity so peirce through more materials. yet with (if it was at all posible) a 0mm (or basicly nothingness) in theory could peirce through ANYTHING but would not stop the person or thing in any way so the same pricable stands for knex notice the shotguns that shoot conectors (or killerks magnum with his amo) create a biger bang sound, they do more damage, but need more force to get all that mass through a paper wile the ones that shoot sharpened (like gorkem's) or greens can peirce paper with ease. so not only will we need a firepower test but a peirce test. peirce is easy enough its velocity and ammo size and a variable if it is sharpend and we have an instructable on how to determin bullet speed. power is bullet size+ extentions (killerk's magnum ammo like) also a little velocitybut the system needs a ruberband standard to keep in mind no putting on more then the systems amount of ruber bands or size of ruber bands (i know people will do this anyway)so what am i basicly saying in this topic? easy please people we need records of bullets speeds for sertain bullets with your guns it is easy since most of you seem to have digital cameras and there is an instructable about it. also we need to know a standard RB cause i dont know whats standard in the rest of the world besides USA and even then i dont know if its standard in the other states (they say americans like everything bigger and sadly sometimes it's true)i have tested some guns out and lets say that stong yet easys from the first page so far are low... so maybe we need a test for difrent kinds of guns! i have seen rifles that fire like a medium pistol (for they are exept they have a longer barrel, bipod, stock, and scope) should these even be given a 6 out of 10 in every catagory? or should it be 2 outa 10 for rifles. if lets say we got a standard of ruberbands to be 2 (not including trigger ruberbands) that where (makeing this up) a circumfrance of 3 inches, end of barrel being 2 feet away from camerathe adverage gun (all makeing up still) 25 feet with white shooting 1 foot per sec, does not dent an empty can. bullet speed of 5 feet per second with a max range of 40 feet (acurate ranges ppl use mesuring tape) with a white bullet that dents and peirce through an empty can we can conclude that the gun has high peirce rate but beter then normal power rateing. so a 7/10 for peirce if best was a max of 60 ft bullet speed of 10 ft per sec and white rods then it could have scored higher.one day when i search "knex gun" i want to see "my first Sniper!, it scored a 7/10 firepower and 8/10 pierce with 100ft range" cause then i can say that is a good gun I'm going to build!

Posted by Sypran 10 years ago


Hey, let's invent this immediately!!!

OK folks, how hard can this possibly be?Yeah, yeah, I know. Probably REALLY hard. But if we all team up and combine our gray matter, can't we overcome any technological obstacle with our collective geekiness?I want to see an affordable, open-source doodad that can turn an LCD from a dead laptop into a working external flatscreen monitor. It should accept digital & analog signals and allow us all to hack up beautiful screens ready to embed in our brilliant projects, while keeping LCD's out of the landfill.punish3r valiantly went down this road: https://www.instructables.com/id/Laptop-Converted-to-2nd-Monitor/but then ended up "cheating" (his words, not mine) by using software that does most of the work (plus he started with a functional laptop!). Discussions I've read usually end with "you'd have to buy a controller for that specific LCD, which would cost almost as much as a regular flatscreen so what's the point?"I reject this (resting on my laurels of ignorance)! If a controller truly exists for every LCD on earth, don't they share lots of common features? And if so, can't we come up with a generic one that could be programmed or dip-switched or soldered or otherwise persuaded to play nice with any LCD on the playground? Even the weird one by the monkey bars who smells like cheese? (Sorry; stretched my metaphor too far and it broke)I envision a circuit board with PC or even TV "in," an amazingly versatile multi-pin adaptor or cable that would replace or connect to that flimsy little ribbon cable sprouting from the LCD. The board would have a USB plug for programming, and a chip smart enough to remember what you tell it. Some smart person will write a nifty app that talks to the board, and vast legions of techies across the globe (or rogue employees of the LCD manufacturers, perhaps?) will upload specs for all of their LCD panels that will be used by other smart people to create a profile for any given panel that can be dropped onto the board.It would have to be really low-cost to make sense, but I envision a cottage industry: package it up as a kit, or we could build goofy-looking monitors out of e-waste and sell them!Somebody else could probably strengthen the argument in favor of this invention by providing a list of terrible LCD ingredients that would be re-purposed out of our trash heaps and water supplies and cat food... I'll leave that up to the experts.What do you think, folks? Is this a pipe dream, or a viable idea? Either way, let's do it!(and if anybody manages to make one, I get dibs on a prototype!)Thanks for reading!Mike

Posted by mikecraghead 10 years ago


Who's up for "The Ultimate K'nex contest/challenge"

Yo yo peoples I was just wondering who would all be interested in my super contest. My grand challenge. My...my...something else great...the coo-- the aweso--...THE ULTIMATE SHOWDOWN YEAH!! Sorry getting a little excited. Sorry if this topic kills most of your other ideas for those who start contests. OK well I basically wanted to know what people thought were the best side arms, grenades, innovative gun, etc.. We had one for snipers so I'll just leave that one out as I'm sure no one wants to build them all. Well for now I just want to see who would all be interested in joining. I need at least 5 entries in each category so if I get enough then I'll set up the contest. Here are a couple of the categories I'll be having but there may be more (#=how many judges we have)1-Best Side Arm dsman(#s), TheDunkis, popomaster, Radioactive1-Most Innovative gun Tech-king, jollex, extreme builder, popomaster2-Best Grenade/Explosive TheDunkis, I_am_Canadian, skate1-Best semi-auto TheDunkis, extreme builder -Best replica of another weapon TheDunkis, T-Man, dsman,Katarukito-Best gun overall dsman, extreme builder, I_am_CanadianWe'll see what else comes up. I'll also need quite a few judges who will judge (duh) at least one of the categories that they won't be entering. They need to build all of the guns and test them and of course I'll take word from the public as well. The rules for entering a gun will go as follow.1. You can only enter a gun that has an instructable sorry no out of instructable sites this just makes it easier2. You cannot enter a gun that isn't yours even if you made the instructable for someone else3. Your gun can't be someone elses but with mods. It has to be mostly your gun although it can contain some parts from other guns.4. You have no word on anything in the category you enter. If I see any smack talk or bragging or if I see you trying to convince the judges then you are automatically eliminated from the whole thing and...you'll be shunned by me for the rest of your life. Shun shun shuuuuuunn!If anyone has ideas for any other category be free to submit...preferbly if you'd be willing to judge it. I will not take anything relating to power.

Posted by TheDunkis 10 years ago


Building a GoPro carrying beast of an R/C car - without Arduino? Answered

So here's the deal. I've gotten it into my head to build a camera platform, primarily for GoPros but depending on its strength and durability perhaps other cameras as well. Seeing as there is nothing for it but to dive in over my head I started looking at robotics platforms and was immediately put off by the condesending tone and the "you's goin' back to schools" amount of reading, studying and groveling for answers at the feet of someone fifteen years my junior - No bleeping way. So I wanna basically build an RC car from scratch out of a sheet metal box. As far as I've come up with I need the following: - An ESC - electric speed controller - A 4-6 channel Transmitter and receiver combo (been looking at Graupner) - A power source (to be determined by the motors and ESC) - A power switch (well duh) - 4 identical electric motors - 4 Tires (preferably with a 12-14cm diameter) So now for the stuff I need help from people that presumably know what they're talking about What motors should I choose? - My guesstimation to the chassis weight is between 500 g and 1kg but was hoping for a payload capacity of appx. 3-5 kg and a top speed at load of about 8-12 km/h (brisk walking pace to jogging). Been told " geared and with an rpm of 250...ish". What battery should I use as to get at least 20-30 min out of one charge at 80% of max load (also determined by the choice of motors) What motor control/ESC should I get - I would like to avoid frying it by putting it under to heavy a load voltage wise when using it the first time. Finally I need tips on a good transmitter and receiver combo for skid steer since I'll be running the motors at equal rpm's per side controlled by the left and right stick, steering by braking and reversing tank style. Have I forgotten anything? Feel free to enlighten me if so. Including my sketches/designs so you know what I am aiming at and should someone feel like building from them please go ahead (film a tutorial for me ;) ) In some of the sketches it shows the use of an Arduino board but I am looking to avoid this, they were early sketches and I didn't notice until I uploaded. I am also VERY bad at higher level math or physics so please be gentle with me. PROJECT HAS BEEN PUT ON HOLD DUE TO BUYING A 3D-PRINTER. THANK YOU FOR YOUR ANSWERS ANYWAY.

Asked by Alt-Horizon 2 years ago


The Most Romantic thing i can do to get a her for a date?

How you doing peeps? Ok there is this GIRL who lives in my Road, lives at number 4 i live at number 34. This might sound like i am exagarating here but this girl is more beautiful than Megan fox what? yea you heard me she is beautiful i thought she was a model( part time should i say) but she is just a beautiful college girl. The first time i saw this girl was like 2-3 years ago when she was walking every male in the town was stopping and looking at her she took the attention of the whole shopping mall. When i saw i knew one day we were gonna meet again. So after two years she just moved in my street, i couldn't believe when i saw her i again i was at the traffic lights i was well dressed i made eye contact with her and she smiled back i was wit my young sis coming bk from taking her School. The next time i met her was in the club with her friends that time she was not well dressed in the club but any way she saw me smile again and she was with her three friends, suddenly she stopped in the club kept looking at me while she was looking at me i was whipering like at my friend's ear and like she saw i was talking about her and she started doing some sexy dance infront of me while i was looking into her eyes. After there was this latvian man came and took her i think it was her relative not bf cos she ain't got one. The next Day going to work i saw her again she was dressed very sexy with leather pants and white top ooo that was sexy, same thing happened again smiling agin looking in my eyes. The problem is this girl is mysterious you know what i mean its rare to see her around or even see her. And a lot of guys want her don't have the confidents to approach her. She is always in the house and working. Notice she does not know my name and i don't know hersShould i do thisShould i send some flowers at her house asking her out?What would you do in this situation? i want the most romantic idea i can do, how can explain this? i want her to get the feeling of - i have to know this/ who this guy is. Something she won't resistOk peeps gimme ideas!!!!!!

Asked by Lovedoc 9 years ago


Why do we have to go through the admin. to change our usernames?

I do understand to a point, for keeping things from getting out of hand with inappropriate text, and I agree with that part, but, I don't agree that we need to wait for the change and the eye over our shoulder in this accelerated www. There are programs out there to filter out and work with the feeds and to keep things lined up right. And, why is it that way; that we need to be monitored here in Instructibles concerning our user-names. We are supposed to have intelligent enough caps on that make us decent people; being that we already have the capacity to be productive members in society, inventive and resourceful, helpful, and competitive for all purposes in research and creating stuff that is new, or old stuff revisited. Is this site that bad? When someone gets inappropriate with things, they have to have outside correction, and then they get watched for avoidance of any future haps because of past haps. This scenario seems to be the case here too, as with countless other sites; but all members get affected through blanket rules brought on by the ones who would show their colors in the lack of their morals. I would ask all who would otherwise give no caring thoughts and understanding on how you would present yourselves on the internet or in the life around you; please rethink how you would put yourself out there for others to see and read about, talk to or have accounts with. The way you look and appear to people who don't want their site trashed with that type of garbage of inappropriateness, is going to make Admins make blanket rules to counter-battle it, thus affecting all users, and creating the atmosphere of distrust in the site among the users ~vs~ the admins. I also wish you well in your future for making good choices that affect you and many who you don't even know in this world that would otherwise experience unfortunate reasoning and control factors as a result of the ugliness that has to be cleaned up... We are all a part of the community in this world, we need to respect ourselves more by carrying a good set of morals and using them ( I don't mean get bigger egos, or fine tune so we can lash back when confronted by our own garbage output). You would be amazed at how different your lives would be, along with the people around you. You'll gain much more respect than you have now; trust me, I know it from my own changes to become a better person.  Start with a smile to some one, It would make people feel happy and smile back; present yourselves with discretion and respectfulness, you should see changes quickly...much respect and trust is to be gained... (c-:

Asked by Discoveritagain 7 years ago


Chibitronics + Instructables Build Nights at TechShop Chandler

Have you seen chibitronics???  They're amazing! I swear I'd just read about these wonderful little sticky circuits, not a month before the invitation to this Instructables Build Night showed up in my inbox.  I spread the news and the whole shop was elated.  What ideas could be come up with for these little guys? I decided to structure this build night a little differently, as an experiment.  In the past our Build Nights have a been a one day affair, usually lasting for about 2-4 hours.  This time, I wanted to give participants plenty of time to think through and execute their concept.  I set up three separate days to meet. Our first meeting was to learn about the Chibitronics products we'd been sent.  We spent about three hours playing with them, and learning about them by using the provided templates online.  Folks around the shop thought they were the coolest thing since slice bread - they got a great response. After this meeting, I gave my particpants two weeks before the next meeting.  They were allowed to take one full Chibitronics kit home, to create their project. During our second meeting, I could tell that my friends were struggling to execute their ideas - so we brainstormed with each other about how to best move forward.  It was a great meeting, with a lot of neat ideas floating around.  So after about two hours - we set out to finish our projects. The last meeting didn't happen unfortunately, due to scheduling issues.  However, we continued to talk through the projects with each other via email.  Then it came time for our due date - and lo and behold, no one had an Instructable to submit.  I was surprised and not just a little disappointed about this.  Finally, two of the original five sent me their submissions... while a third sent me a few photos and the beginnings of what was to be their Instructable.  I cobbled together what I had of his idea, which as it turns out - didn't go as planned... but has the makings of a great final product!  If we can just figure out the programming... :/ So, I got a couple of cool ideas out of this Build Night - however I learned a lesson as the organizer, that perhaps this type of ongoing Build Night doesn't work nearly as well as those of the past.  So I think I will revisit my older model for future Build Nights!

Posted by coercionette 3 years ago


Help with adding LED's and mini fan to existing circuit.

Hello, and thank you in advanced for taking the time to read through this and give me feed back. I greatly appreciate it. So I have a working circuit that is running off a 3 prong 120 V AC 10 amp power supply. I thought i would pretty it up by adding a led lit power switch and another plane led in a different spot, and make it a bit more reliable by adding a fan on the inside of the enclosure. I downloaded and app that calculated how much Resistance I need from the power supply to each led and fan (all in parallel). After i hooked everything up to what i thought would be an easy mod. to my surprise I smoked the resistors in under 60 seconds.   I talked to a friend who gave me some basic direction but couldn't give me technical stats. He said i needed to start with a transformer (i believe is the term he used) to drop the voltage, then to go to a bridge rectifier to turn the AC current into DC, then after that i would need a current regulating switch to give the proper supply for the LED's and Fan. Then from there he said i would be able to calculate the Resistance needed for each Led and fan and would be able to hook up the resistors needed with out damaging them. If this is the correct steps to take I can understand that; however, he was not able to give me any technical info on any of these components and what i would require. If these steps are correct, what i need help with is to determine what specs i would need for each piece, Including the resistors after the current regulating switch. (Technical Info) The 1st LED im using is a Switch that lights up when on and has leads just for the LED (the switch is already being used and works). I could only find the style i wanted from an automotive shop so it says for the led 12V only(unfortunately i couldn't find specs on the amperage the LED takes, but the switch itself is rated at 5amps). The second Led is a basic Green Led that i Purchased from radio shack, It is 2.1 V and runs on 30 MA, The fan im using is from an old game console and is 5V and runs on 80MA. Thank you for any and all help you give, this went from what i thought was an easy stylish mod to me ripping my hair out and scouring the internet for info, i finally gave up and decided to join this great community to ask for help with my specif conditions. Thanks Instructable Fam.!

Posted by 3CEnterprises 3 years ago


Avoiding Unnecessary Conflict in the Workplace

I was sent this advice by a professional body that aims to provide "work life support" - basically trying to cut the amount of stress suffered by UK teachers (in any one year, around a third of serving teachers will have time off sick with work-related stress).  It's good advice for people in a lot of jobs (such as the infamous cubicles of American office life), so I thought I'd share it: Most of us spend the majority of our time at work, so when we experience conflict in the workplace it can have a huge impact on our lives. Disagreements are commonplace in a working environment, and can be helpful in challenging preconceptions and developing ideas, but this can descend into conflict when agreement cannot be reached, and neither party is prepared to compromise. This can be particularly difficult if one party feels victimised, ignored, belittled or intimidated. Often conflict is the result of miscommunication, and the best communication occurs when all parties are listening well. If we feel heard, we are more likely to want to listen in return, and to reach a better understanding of where the other person is coming from. Active listening will help you to hear and understand exactly what the other person is saying, and will encourage them to share more information. To be a good active listener:   •              Stop talking! You might be tempted to interrupt, but try to wait until the other person has finished saying what they want to say. •              Make sure you are giving good non-verbal signs that you are listening. These include maintaining eye-contact, having a good open posture (not crossing your legs or arms), looking interested and nodding. •              Use silence. If you pause for a few seconds before speaking, you may find that the other person has something more to say. •              Try to catch yourself if you're losing concentration. You might be drifting off, thinking about what you're going to say next, feeling sleepy, planning your dinner... •              Check your understanding frequently. You can do this by asking clarifying questions, repeating back in your own words what has just been said, or summarising what they've said so far. Get the other persons agreement that you've understood them correctly - if you haven't, then ask them to repeat what they've said and try again. •              Use open questions (what, where, who, why, when) if you want to get more information and encourage the other person to speak freely. Use closed questions (those resulting in a yes/no answer) to get specific information or to clarify your understanding. •              Be on the look-out for non-verbal signals - do they look tense? Are they speaking more quietly than usual?   ...we now return you to your usual programming...

Posted by Kiteman 8 years ago


how do I get an electronic device made?

Hi folks, I am new to this forum so please ignore and naivity / stupidty on my part and I hope this is the right place to ask this type of question. I need help and am appealing to anyone who knows anything about getting an Electronic Device Made. Basically, I require a Bi-Directional People Counter to put in the doorways of venues to count footfall in and out of a given location. It needs to be wireless (Battery operated), easily attached to a doorway/entrance (adhesively) so light weight and able to transmit the data back to our servers (probably via the venue wireless). I have an idea about what type of sensor I need (PIR) and the basic components within the device like battery, circuit board, wireless transmitter etc and I know I will require some sort of algorithm to aggregate/calculate the data and send it back to our servers. My problem is that I am not an engineer and can obviously only get so far and I don't know what to do next. From my research it would seem I need to get an Industrial Designer and a Manufacturing Engineer but both of these seem to be further down the process than what I need first. What I need is; 1. someone (an expert) who can understand the business problem I have and create the electronic device to solve it. Ie. design the circuit, tell me what type of battery I need, what type of sensors we should be using, code the algorithm to make it work and what the subsequent output of their design will be etc and for them to then produce these designs, PCB, Bill of Materials etc. 2. someone I can then take that data to and tell them to make it look pretty (presumably the Industrial Designer) by designing the case/aesthetics etc 3. to then have all the required information (functional designers / circuitry, mould/casing etc) to take to a manufacturer to put the final product together, ready for sale. Does anyone know what type of company or person I should be talking to for each phase? What are people called that do phase 1 that I outlined? Basically, I think I know what I need in terms of technology and its capabilities but I now need a professional/expert to take over to make it a reality. Any help or advice on this would be hugely appreciated as I'm getting a bit muddled and would love some clarity on the process so I can move forward in which ever direction is now appropriate? Thanks all!

Posted by jonkrug 3 years ago


Translated instructable

Hej! Today I recognized a translated version of one of my ibles and I'd like to give some feedback about the experience ;) I think it's supercool someone took the time and made the effort to translate one of my ibles. I really enjoy the fact that people I would never be able to talk to now can read my ible.  That's actually amazing and I'd like to thank you for that! And I want to share some of my thoughts and feelings about it: REALIZING: - The first few moments when I realized there was a new instructable existing in my account I was a little bit in shock.  Don't get me wrong - but my profile feels like my "private" spot on the site. It's a messy place with lot's of weird draft ideas and unfinished instructables. (I would have tidied up if I'd expected guests...) Of course I surmised admins and staff somehow would be able to enter this place - but I feel a little invaded as it actually happened.   -- I think there are several possibilities to avoid this irritating moment: -The translator could write a PM before starting the translation. Just to inform the author about there is soon going to be another version of one of your ibles. (This might be a little bit more "paperwork" but could also save the translator some time. There is a chance an author speaks another language and would be able to do the translation him/herself...) - The translator (or the instructables robot) could send a PM to the author when the translation is published to inform him/her about the new ible. (I'm a sucker for those "your instructable was featured" mails - a "your instructable was translated" mail would make me happy and would help me to forget about the girl's cave invasion)  INSPECTION: - I can't say anything about the quality of the translation since I don't speak spanish - but it seems to me the translator was pretty meticulous on his/her job: the wikipedia links in the instructable are "translated" as well and link now (as far as possible) to the spanish wikipedia. That's thoughtful and I really appreciate it! (It's a funny thing that, although I can't actually read this instructable, it still feels like "mine".) SUGGESTION: I think it wouldn't hurt if the translator adds a very last sentence to the translated instructable like " this instructable was translated by XY" There are several advantages to this info: - There would be given some credit to the translator - The people writing comments wouldn't be confused about the combination of a perfectly written instructable and google translated comment replies... I have no clue who translated my ible. I think it would be awesome if the translator had a instructables profile. I would like to thank this person!  So this is my feedback, might it be useful... (Woho! I'm exited about the translation! This is übercool! Thank you! )

Posted by spunk 3 years ago


K'Nex Guns Need To Move On!

Alright, someone needs to say this so i will. Knex guns are stuck in this sort of, generic handguns, average assault rifles, shotguns with nothing new. We all need to rack our brains and come up with some concepts, then post them. So we can all have a crack at a what would be considered "HARD" concept. We need to be trying new ideas. We're stuck in a dark age of nothing new (only rarely something good might come out) we need to step forward . Basically, I'd much rather see some pics of a failed concept and what you were trying to acheive than, "Removable Mag Handgun" or "M8AR (MegaMetal8's Assault Rifle)" which is just a generic removable mag gun. I Say one of us with quite alot of subs needs to make a ible/forum where EVERYONE has access and can post concepts. Its just getting boring with all this, so for more fun and ideas. Together, LETS DO THIS! Thankyou for reading and together we can make this happen. -MM8

Posted by MegaMetal8 6 years ago


Big battery bank project. Circuit related questions?

Hello everyone! I have a project in my mind and I would love some guidance and some ideas if possible. I already have a lot of 18650 batteries in an “acceptable” state (1800-2100mAh each) and I am planning to make a large battery bank, for use in camping mostly (smartphone charging, led bulbs, electrical air pumps 12v, etc) I did read a lot of articles in here about battery banks, but i didn't find something as complex as my idea. I have already made a 12v battery pack with 12x18650, 3 rows in parallel, of 4 in series in each row. My goal was to operate a 12v air pump for inflatable mattresses. It worked like a charm! (Also created with instructions from here! Thanks for that!) But since my “DIY disease” does not leave me in piece… I want to build a large enough pack that can support the following: 1) 12v car plug 2) 5v/1A + 5v/2.1A USB plugs 3) charge circuit for the battery pack, so I will no longer have to remove the batteries to charge them separately 4) switches in each plug 5) led voltmeter also with switch ?) at some point I would like to add a circuit to charge it with a solar charger or a mini wind turbine that i will create at some point with my 3D printer, but for now let stay with the basic stuff! For the case i will use a modified screw organizer case, with those classic 18650 black holders from ebay. (photo below) The case will fit almost 8 to 10 holders (4x18650), so we are talking for 32 to 40 batteries... My main concern is the circuit design. I have done a few simple things in the past, but this is a bit more complicated and that is why I want your guidance/ideas. How to safely connect all those things together or maybe suggest a different plan/design, cable thickness, etc... Links gathered so far: I am thinking about 4S in a row. Is that too much? Or should i consider 3S? 3S Li-ion Charger PCB with BMS For charger... something like this maybe? 12.6V 5A Charger optional... maybe i could fit sothing like that, for laptop charging? 150W DC-DC Boost Converter for 5v 1/2.1Amp charger i m looking at this. 5A Charger Step down Module for usb/12v plugs/voltmeter i am considering this option. Thanks in advance for your time!

Asked by the_phantom_boy 1 year ago


K155ID1 chip showing low voltage between decimal pins and power supply. Is the chip bad? Answered

Hello, I turn to those who know probably a heck of a lot more about this than I do.  I've been trying to build myself a nixie tube clock, and everything has been going fairly well. I recently got the driver chips in the mail which convert BCD -> Decimal in order to hook the nixies up to a digital logic system like an arduino. I'm using a 12 V -> 180 V switching power supply for lighting the nixie tube. It is connected to ground on a computer power supply that I'm using to power the entire project. The 5 V rail on the computer power supply is connected to the Vcc pin of the K155ID1 chip as shown in the picture. I've connected the ground pin on the K155ID1 to the common ground of the computer power supply. I have nothing connected to the A, B, C, or D pins on the driver chip, which from what I understand should be the same as inputting the BCD number 0000 or just 0 in decimal. If I'm inputting a 0 as my number, the chip should output a 0 in decimal. From every single datasheet I've seen talking about this chip, that should mean that pin "0" (as shown in the picture) should become effectively grounded, and assuming that the "0" pin is connected to the 0 digit on the nixie tube, that should connect the nixie tube to ground, which should allow 180 volts to flow through the nixie tube, causing it to light up. Unfortunately, this is not what happens. In fact, nothing happens. Nothing happens no matter what pin on the driver the nixie tube is connected to. The only way I can get the nixie tube to light is if I connect it directly to ground, in which case, it lights up very nicely, but obviously that doesn't help with controlling it in any way. I took out my multimeter and measured the voltage between the 180 V supply line of the nixie tube and the pins of the driver chip, and every single pin (except A, B, C, and D) show a voltage of about 80 volts, which is not enough to light a nixie.  My question is, is there something I'm missing? I would think that the chip was bad or that I popped it or something. Heck, you could fill an electronics graveyard with all the chips I've popped over the years. But I've rebuilt this setup 4 times now, and I've attempted this following multiple schematics, and even switching the chip out for a brand new one 5 times. Each and every time the result is exactly the same. Either I'm overlooking something huge, or I just happened to buy 10 dead nixie driver chips. Thanks, in advance for any input!

Asked by tylervitale 2 years ago


Wrapping wood in carbon fibre.

Hi, After cutting my own wooden lacrosse shaft using the tutorial on Instructables, it snapped within half an hour of use. Now I know this was because the grain was pretty poor and it was not a strong wood, but someone suggested that I wrap a shaft in carbon fiber so that it is slightly stronger, limits horizontal movement and reduces denting. I just have a few questions about trying this; Would this carbon fiber be appropriate for the project. http://compositeenvisions.com/raw-fabric-cloth-2/carbon-fiber-97/carbon-fiber-fabric-plain-weave-3k-5-7oz-tape-605.html if not where should I look? The biggest problem I see is somehow packing the carbon tight around the shaft so there are no bubbles and it is consistently straight all the way down the shaft, there is a vacuum packing basics tutorial on instructables but I'm not sure if you could use that for a lacrosse shaft. Instead of making my own bag as per tutorial would just a plain bag (http://compositeenvisions.com/vacuum-infusion-equipment-71/nylon-vacuum-bagging-film-500.html) be fine then clamp off the unneeded extra, although are those bags re usable? Because I don't want to have to pay $5 USD every time I would like to wrap something. I saw something called bleeder cloth as well, would this be needed to stop excess resin sticking to the shaft? When it comes to the carbon, I know someone who sails a lot and has some experience with carbon fiber but none with vacuum packing who said I should lay it up like the image attached to decrease horizontal movement while allowing vertical flex. Would this have the desired affect as if this is successful I plan to make a ton more for a high school team I help coach. I've attached a image to give you some idea of what I'm talking about. Then for the actual laying of the carbon itself, a shaft is not a flat surface so you can't just pour it on like the Youtube video's I've found. I'm not sure how to pull this off. Then afterwards, is there a simple way to test the properties of the shaft; specifically flex and impact strength. Because even if I don't end up wrapping the shafts I still need to test the wood to compare it to alloy. Sorry about the small essay, but I would really like to give this a good shot. Because shipping shafts from the states is quite expensive, being able to make my own and then put graphics on them would be amazing.

Posted by Thatkiwiguy 5 years ago


Grid Tie and Induction Motors

Yes, I know it's nearly 3am on the east coast... but and idea struck me. So the idea is to feed small amounts of mechanical power into the power grid. Not necessarily run the meter backwards, but supplement power consumption.I've researched grid tie inverters - which are very expensive. For those wondering, a grid tie inverter is feeds mains power back into the grid by syncing phase angle and phase (no dead shorts :) ) and applying slightly higher voltage. They are very efficient and really not within a college student experiment budget :pSo I was thinking... Rather than go from mechanical to DC to AC to grid - go from mechanical to AC to grid VIA an induction motor. As a proof of concept, use a DC motor + battery to turn an induction motor. Plugged into the grid, in theory, should apply current. Oh, but the phase you say? How do you prevent a dead short?"I've thought of this -- before applying mechanical power - have the grid bring the induction motor up to speed. Then try to turn faster (apply a torque) with the DC motor, for example. In theory, the amount of extra power put into the grid will be related to the slip angle of the motor - which will also control the speed of the input (so you can't go over speed by too much).Keep in mind that this whole battery business is just a proof of concept sort of thing - I'm not talking perpetual motion or any hohaa craziness. In the end, the final mechanical input will be around 200 watts. I expect this to be very low efficiency (likely 50%ish), 100W isn't an answer to the energy issues - but it's an experiment. It's also not going to come even close to driving the meter backwards, but it should run (as supplement) my laptop + two to three 13w CFL's :DI think the theory is feasible -- the inspiration comes from flywheel driven UPS systems. An induction motor is driven while mains power is on to keep a flywheel in motion. When the power goes out, the FW drives the motor and feeds to local grid.I'm thinking of using a "low" rpm induction motor.... If I recall, ceiling fans are 16 pole? So that's 60Hz2*2/16=450rpm... Add ceiling fan motor to the list of things to hunt for :) Looking at the one above my head, it looks like it even has a nice bolt pattern for some sort of pulley shenanigans :DCan someone either throw some ice water on me and slap me for being an idiot -- or let me know if I've found a boat to Valhalla.Oh, and my apologies for dancing around the "mechanical input" details.... There's a reason for this, I promise :) In any case, insight and information is appreciated :)

Posted by trebuchet03 10 years ago


Instructables Internship Days 5-6 (Including the weekend!)

Hi everyone,Sorry I didn't post on Friday, Saturday, or Sunday, but I'll make up for that now.So, Friday:I arrived at Squid Labs knowing that today was a special day. Today would be the day that construction on Proj. X would commence. Jason and I layed out the materials and began building, taking pictures every step on the way. We assembled the main component by lunch time, and installed about 66% of the other components by the end of the day. Noah helped us out a bunch, figuring out where certain components should go and how to attach others to the "mainframe."The (construction) work environment at Squid Labs is awesome! We pretty much just dragged our materials outside and started working. You really can do whatever you want, whenever you want; it's truly amazing. I'm pretty sure that Today was the day that I realized how much I'd be willing to drop out of school and just work for Instructables. I don't really think it's a great idea, but I'd certainly be happy working full-time for Instructables, no doubt about it!I really didn't do much else today, Jason and I pretty much just worked on the.... on Proj. X (Caught myself, whew!) all day!Now, onto the weekend!Friday, Billy and I decided that we would go into the city (San Francisco) via BART/Bike on Saturday. Saturday has come, and it's finally time for me to go to S.F.After Christy dropped off Billy and I (with our bikes) at the BART station, we rode BART all the way to the city. Christy also gave us 2 tickets to go to the S.F. MOMA, which was awesome. There was this one drawing that I really, really liked. Unfortunately, I can't remember the artist or the title of the work, although I'm pretty sure it's entitled, "Untitled." There was also this really odd exhibit, which was...just generally odd. Imagine a house. Now, rip all of the walls out of the house, rotate the whole structure that you ripped out equally over the X and Y axis, and then shove it through the walls of MOMA.... yeah, it was pretty damn weird. Then they guy drilled and off-center hole in a record and that was playing on a timer, so it went really fast, then slow, etc etc. In the next room, there were about 20 pictures of what we just saw... Again... just odd.Anyway, after MOMA, I decided that it would be really awesome to see the Golden Gate Bridge, so Billy and I rode our bikes down toward the piers, and we'd then take "The Embarcadero" to the bridge. So, as we were passing Pier 39, my left pedal stripped out of its socket, leaving me no way to "bike" to the Bridge. Luckily, it broke off at pier 39, which just-so-happened to be a "tourist pier." Billy and I hung out there for most of the day. During lunch we "fed" a bunch of birds; pigeons, little birds, and a really mean seagull...After we realized that we would have to walk all the way back to the BART station, we started on our journey back. Awesomely, on the way, we came upon a really tranquil-looking park and a square with a huge, awesome sculpture. The sculpture had a bunch of gigantic concrete "square tubes" that jutted out of its huge base. There was water flowing out of almost everything, and steppingstones that allowed the viewer to walk underneath the immense structure. The only two words that I could describe it with are simply awesome.We arrived back at the original BART station, Christy picked me up, we ate dinner, and went back home.Sunday:Sunday was just awesome. Mitch and Erica took me Surfing with Mike, Jason, and Jason's Sister. Although the waves were small, it was a beautiful day, and we had an awesome time. For lunch, Awesome Mike brought his mini-propane grill and we had hot-dogs on the beach. After lunch, we went back into the water to surf a bit more and then left. Surfing was a blast!Back at "home," we watched "Sunshine," a sci-fi movie about a team of scientist/astronauts on a mission to deliver a bomb into their dying sun, to create a new sun within the old. Most of the movie was actually pretty good, but I thought the ending just... sucked outright. I won't ruin it for you, but you really don't need to see the movie. During the movie, though, Christy whipped up some Rhubarb Pie! YAY!Back to work - MondayYesterday, in the morning I made the "How to Create Homepage Images" Instructable, which I suggest you check out if you want to contribute to the website's homepage. We're giving you the opportunity to make homepage images that we'll actually use on the homepage... if they're good enough ;). After, Jason and I pretty much finished up Proj. X, but we will require some time in the afternoon on Tuesday to finalize construction. This thing is going to be AWESOME!In other news, Billy and I are going to "The Googleplex" tomorrow (Tuesday) to give a small talk with Christy, which I'm really excited for. At first I didn't expect that they'd want interns to go talk to Google, but Christy and Eric explained why they want us to go. Google wants the opinions of the users. Billy and I promise to speak well of everyone, and speak on everyone's behalf. I've gotta go, we're leaving soon!Cheers,-Muffinatorp.s. I burned my PB and Banana sandwich again v_v...

Posted by T3h_Muffinator 10 years ago


Ship of Theseus - Philosophy of Identity

This past saturday there was a show on TV about the advancements in the field of prosthetics and human augmentation. I only watched less than half of it - but the timing was interesting. I came across an article about the Ship of Theseus (from Greek Legend) and have been reading quite a bit about "identity" and similar topics. This is philosophy - so there's really no right answer, but I have found it very interesting to think about and thought I'd share and see what others think.The gist of the story: Say we were to preserve Theseus' ship. As parts deteriorated and rotted away, we replace them with new (better/stronger) parts. Eventually, we replace each part with a new one. The question now is - Is it still the same ship? I'm willing to bet most of you will say yes.Now lets say that instead of replacing the ships components with new ones - we take all of the parts from the warehouse (where the parts are being stored) and reconstruct the ship from these new/better parts. Which ship has the "identity" of Theseus' ship? This is an interesting question because I'm again willing to bet that the "first" ship mentioned is your answer. But why? The parts would have gone to the "first" ship if not into the "second" ship. Why should this be different?Third Case:We take Theseus' ship and we tear it completely down in dry dock. In its place, we reconstruct using new parts. Is it still Theseus' ship?Now lets look at a digital device - my laptop for instance. Let us say that I have an "identical" machine (spec wise) and I cut and paste each file from this hard disk to the "new" machine. Does this "new" machine take the "identity" of the "old?" Can we say this "new" laptop (ship) is in fact Theseus' laptop? Talking with my colleagues - their answer (unanimously) was no - it is not the same.So here is where I get to the human side of things... Biological process have our bodies continuously replicating cells. In about a year, roughly 90% of the cells in your body will die. But no worries - they are continuously replaced with new ones. So, does that mean we are a different person compared to 12 months ago (I've read this question from several sources)? How about amputees? Today, prosthetic limbs can allow them to do what many of us choose not to do - run marathons. Are they any less of what they were before? Again, I'm willing to bet many will say yes - we're the same person. One argument is that our memories make our "identity." Fair enough. Now lets entertain the future. We now have the technology to save your memories digitally. We can digitize the human brain preserving its intelligence and thinking ability. Just entertain this idea for a few minutes. So if my brain (and its memories) are now digital and I copy it to another vessel. Is it still me? Do "I" still have the same identity? I'd like to think yes, but what was your answer about copying a laptop's memory (was it no - they are not the same)? Why should my digitized memories be any different than that of a laptop's digitized memory?At this point, my colleagues were floored. They figured out where I was going a few sentences before I said it. That's what makes the topic so interesting (in my opinion).If anyone has ever heard of HAL-5 - you already know what a feat it is. HAL-5 (yes, that's a play off of a space odyssey) is a human exoskeleton designed to assist those whom otherwise would be unable to walk for long periods of time. The user can lift heavy weights (80kg - say a dishwasher) among other helpful tasks. How does it know to move? Sensors on the skin detect electrical impulses in the brain that tell the muscle to react. Those signals are processed and turned into mechanical motion. All of this happens before the muscles have time to move. That is, the machine is moving before you even do.So if we replace our bodies and even our nervous system with mechanical devices - what makes us the same person? AND, are we the same person if we can simply copy ourselves to a new body?So last point - and it's not even my own. One of my colleagues brought this to the table today (literally at the lunch table) :P We were talking about the advancements and the potential/reality of human augmentation. Then he says something that makes complete sense to me. He said that we are at the point where our brain is evolving at a rate faster than our human bodies are. Just give yourself a minute to contemplate and wrap your head around the potential of that statement. To a degree - we have already done this (just not internally). Why else would we fly in a plane or drive a car? Well, I for one sure can't fly or run at 70+mph.1. I apologize for the length.2. I'm curious of your thoughts -- if you have another aspect of this, please do post.3. Remember there is no "correct" answer, this is just philosophy.4. There will always be more question than answers on this subject (at least I think so).HAL-5: http://www.engadget.com/2006/10/29/hal-5-robotic-suit-ready-for-mass-production/HAL-5 (mountain climb): http://www.engadget.com/2006/08/08/hal-robot-suit-almost-summits-with-quadriplegic-man-in-tow/

Posted by trebuchet03 11 years ago


Thin edge of the wedge in Texan education?

Any Texans out there? Did you know what (revisionist?) plans were afoot in your education system? Even as a panel of educators laid out a vision Wednesday for national standards for public schools, the Texas school board was going in a different direction, holding hearings on changes to its social studies curriculum that would portray conservatives in a more positive light, emphasize the role of Christianity in American history and include Republican political philosophies in textbooks. There have also been efforts among conservatives on the board to tweak the history of the civil rights movement. One amendment states that the movement created “unrealistic expectations of equal outcomes” among minorities. Another proposed change removes any reference to race, sex or religion in talking about how different groups have contributed to the national identity. - A greater emphasis on “the conservative resurgence of the 1980s and 1990s.” - A reduced scope for Latino history and culture. - Changes in specific terminology. Terms that the board’s conservative majority felt were ideologically loaded are being retired. (The new recommendations stress the need for favorable depictions of America’s economic superiority across the board.) - A more positive portrayal of Cold War anticommunism. Disgraced anticommunist crusader Joseph McCarthy, the Wisconsin senator censured by the Senate for his aggressive targeting of individual citizens and their civil liberties on the basis of their purported ties to the Communist Party, comes in for partial rehabilitation. - Language that qualifies the legacy of 1960s liberalism. Great Society programs such as Title IX—which provides for equal gender access to educational resources—and affirmative action, intended to remedy historic workplace discrimination against African-Americans, are said to have created adverse “unintended consequences” in the curriculum’s preferred language. - Thomas Jefferson no longer included among writers influencing the nation’s intellectual origins. Jefferson, a deist who helped pioneer the legal theory of the separation of church and state, is not a model founder in the board’s judgment. ... Heavy emphasis is also to be placed on the founding fathers having been guided by strict Christian beliefs. - Excision of recent third-party presidential candidates Ralph Nader (from the left) and Ross Perot (from the centrist Reform Party). - A recommendation to include country and western music among the nation’s important cultural movements. The popular black genre of hip-hop is being dropped from the same list. None of these proposals has met with final ratification from the board—that vote will come in May, after a prolonged period of public comment on the recommendations. Still, the conservatives clearly feel like the bulk of their work is done; after the 120-page draft was finalized last Friday, Republican board member Terri Leo declared that it was "world class" and "exceptional." First paragraphs from New York Times Headline paragraphs from Yahoo News It occurs to me that it may be appropriate for some members to have a rather forceful word with their elected representatives - at all levels - about the damage these proposals will cause in the American education system...

Posted by Kiteman 8 years ago


Make HID (human interface design) beautiful

There are few ubiquitous household items as ugly in form and function as a computer keyboard. They're everywhere. They're an inefficient and archaic visual distraction, barely suited to stamp ink on dead trees, as they were originally designed to do. Computer components need to be elegant, form well married to specific functionality needs, if computers are to fade into the background of life and thus best support it -  and that is nigh impossible with the keyboard hanging out. I'm a hci software guy. I spent almost three years writing a library of code to enable a new generation of input devices… beautiful, simple  and efficient… closer to playing a musical instrument than typing on a typewriter. I need designs for a piece or two of hardware that shows off how beautiful and/or hidden a computer input device can be when you completely minimize its form… If you are an industrial designer or a mid level maker or even a just a for the fun of it 2d or 3d CAD nerd, allowing for the device functionality will be a trivial concern, with 90% of your attention paid to the form of the device… and that's what I'm looking for… a beautiful replacement for the horrible and outdated keyboard and mouse that shows off the features of the software and blends in to people's lives. The designs will be 5-key and 10-key. The electronics area to allow for will be pretty simple -  probably just an HID chip - as tiny as possible - with ports to wire to buttons, etc -  a power source, wireless connector (preferably low power bluetooth), and wires to connect the chip to everything it needs to connect to. While the designs can be created as completely conceptual, we would prefer to be able to physically prototype them using something like 3d printing, laser cutting or other maker accessible options and electronics components that would also be maker accessible. Preferably, the file format will be solidworks compatible. For now, this is an unpaid gig, with the compensation mainly being in the form of some really sweet portfolio designs, hope for a better HID tomorrow, and maybe a makey makey type gift for those times when nothing but a banana piano will do. We do have investor meetings lined up and will credit any prototype designs used to show off the software during those, as well. If we decide to sell the software in various configurations packaged with hardware variations, and everyone feels like a good time was had by all in this trial run, then we can talk about a production partnership. If that were to be a possibility, industrial design related experience or strong enough to heavily research it type interest - sourcing, packaging, etc. - would be a big bonus. (As a note, while the  HCI is all key input based now, there will later be support for things like 3d tracking options - So, the project could get even more exciting on the HID side.) __________________________________________________ If you are interested in learning more, please use the PM system provided through Instructables as first contact. Further contact info will be provided should the initial contacts merit it. Thanks!

Posted by parrleu 5 years ago


HALO for us knexers!!!!!!!!!!!!!!!

Well, i got the idea from a topic talking about a knex war. Then I thought "why dont we have one?????"so, i found out about how to get halo for free on the internet (from the microsoft website), and i have participated in a few multiplayer games. However, there can only be 8 participants max because that is the limit my internet will support (and it is very fast too.) So, i have set a password on the game, and you will be a participant on a first-come-first-serve basis. the first 8 to sign up will receive the password to the game, and will have the pleasure of getting killed by me.PARTICIPANTS1. DJ Radio2. Benfoxg3. Derinsleep4. 5. 6. nerfer 1927. Darth gecko man8.for the participants, here are the instructions:click here to download the trial version. when they ask for your age, click 18 on the drop-down box. Set it up, and name your profile your ibles username. you might want to sort your controls at this point too. To join the game, click on "multiplayer", click on "internet" then "get list". Click on "instructables", then enter the password.a few ground rules on the game-when you join, make sure your profile name is your ibles username. I do not want to think a hacker got into the game.-if someone says they are typing, if you spot them, do not shoot them, as it ruins the whole game experience. if they say they are typing, but you see them moving, you go ahead and shoot, they are lying-NO VERBAL FIGHTING-you can post comments mid-game, but no fighting people. If you shoot someone, its all right, but no "f you" or stuff like that.-FAILURE TO FOLLOW THESE RULES WILL RESULT IN THE GAME BEING SHUT DOWNA word of warning to you guys:-make sure you have a fast processor (2 ghz at least), and at least 2 GB of ram. the game will run smoothly if you do-make sure you have a fast internet connection, as the game file is large in size. I need the fastest connection, as i am the game hostok here's the lineup for what we will do during the game.first, every person must stay at a base until i say ready. when i do, you may move out to try to look for a flamethrower hidden in the game arena. you may shoot whoever, but you only win if you find the flamethrower and shoot me. After, we will have a warthog race, the first thing we do is try to fight our way to the hog, and then drive to the starting line which is near the place where the flamethrower was found. then we do a 4 lap race along the perimeter of the arena, and the 4 who do not participate in the race get to shoot us down along the way. the next game will be a free-for-all slayer where the one with the highest score wins

Posted by DJ Radio 9 years ago


How can I wire a recorder cut-in box?

So, a little background: I'm a reporter, and I do a lot of telephone interviewing. There's currently not an app that works reliably for my phone to record both sides of a call, and given that I already have a very nice standalone voice recorder (sony ICD820) that has line in/line out functionality, I'd like to have a way to run the signal from my phone into the recorder, record it, and then pass it on to a headset with a mic on it. The problem is that the recorder only has 3.5 mm stereo in/out (TRS), with no separate mic channel, so if I connect the (TRRS - mic/l/r/ground) cable from my phone directly into the recorder, then connect my headset to the 'line out' port, it ends up distorting badly, and not recording the mic channel. As a temporary solution I A) use two "Y" cables (one connected to the phone, and one to my headset) to split the mic from the audio channels, then B) feed the audio channels into and back out of the line in/out ports on the recorder, and then C) use a coupler to mate the two mic channels. This puts the recorder in-line on the audio channel(s) only, and routes the mic channel directly from my phone to my headset (picture attached). This works great, but it's bulky and delicate, and obviously only records the incoming side of the conversation.  THE QUESTION: How can I wire a box that will give me the ability to "cut in" a recorder on a TRRS source, which is delivering (potentially) stereo audio channels along with a mic channel - ie, up to three channels - so that the recorder is recording all three channells? (note: it does not matter if some/all of the channels are merged). WOULD IT WORK TO wire a box that A) summed the Left and Right channels from the phone using resistors on each channel (see the picture in the link), and B) fed the summed audio and the mic lines into the Left and Right pins of a TRS plug, respectively, to give the recorder a stereo source? I have put together a crude diagram of what I think this could look like (note that the diagram includes a DPDT switch to 'cut in' the recorder, but I would likely omit this in the final design for simplicity). Additional question: I have seen wildly varying info on what size resistors to use on the summing circuit, and also conflicting information as to whether I need a third on the ground (???). The simplest I have seen is just using a 1K resistor on each of the incoming channels. Given that these are just standard headphone/passive mic voltages, what size resistors would I need, and where in the circuit? Link to the simplest 'summing box' diagram I hve found for this type of application (top image): http://techtalk.parts-express.com/forum/tech-talk-forum/60443-stereo-to-mono-summing-circuit

Asked by ThomasJ126 1 year ago


How to Wash a Cat

Let me tell you how I bathe my cat.  This is no fluke. I have even taken a cat to a college class and given him a bath as a demonstration.  If anything would set a cat off, that would. I have even bathed cats that aren't mine. Take a big breath and relax. Your state of mind will influence his. Start with a clean counter next to the kitchen sink. Put towels on it. Don't have them so close to the sink that the cat could grab it.  I generally have the cat facing away from the towels and toward the water faucet.  Don't have him facing you.  He'll try to grab you and climb up your chest.  Get your shampoo opened and handy. Consider which hand will be easier for you to hold the cat and which to wash.  Set up your towels and sinks accordingly. Now, plug the side of the sink you'll be using to bathe the cat. In the other side, start the water. Get it to the temperature you want. Turn the pressure down to a slow flow - on that side. Put your cat into the empty, plugged up side of the sink, facing the wall. I have bathed a cat with and without a towel in the sink. Your choice. Let him watch the water for a few seconds until both of you relax. With your washing hand, cup your hand, fill it with water and "pet" your cat with it. Start on his back, not his head. Do this several times. Slowly move the faucet over to his side of the sink but not ON him. Continue "petting" him with water. If he's relatively calm, increase the water pressure so the sink is slowly filling. Remember, you're washing with one hand and restraining him gently with the other. Put some shampoo on him and water-pet and wash him. Have a little PLASTIC cup handy so you can scoop some of the water from his side of the sink and pour it over him (it has soap in it - might as well use it to the max). Continue washing until you are satisfied that he is clean. GENTLY remove the plug and let the water drain WHILE you are filling that cup with clean water and gently pouring it over him. Scratch and pet him frequently. Talk to him.  Rinse him thoroughly. When you are all done, let him drip a little.  You might want to gently squeeze his legs and tail to 'ring' some of the excess water off of him.  Then put him on the towels and wrap him up gently but quickly. Use old towels. If he has his claws he might snag them a little. Drying is the hardest part because he wants to run away. Dry him as best you can and then release him in a warm room. Don't let him outside until he is dry. I hope this works for you as it has for me.

Posted by lilredcin 6 years ago


Can someone help in changing motherboard and CPU's?

I wrote in a while back about the problem with it. When I plugged it in it would beep 3 times and not boot up. I changed the RAM and I get no beeps anymore but it still will not boot up. I have a motherboard and 4 different CPU's but I don't know which one will work with the motherboard. I need to see if someone can help me on that. The on that its going in is a Gateway Windows XP The motherboard is from 2000 but it has never been opened or out of the box. I can't get anyone to help explain to me in English on how to know what kind of mobo to get that I can understand. They just keep going off in the big computer talk and I have no idea what they are saying so they don't want to take the time to help me so I need to try and put this one in it. Now I need to see if you guys can help me. Here's the info on the one it going into. Gateway Windows XP Model # MF ATXSTL KTH 300SE LTD Kittyhawk # AA AS1507-805 Motherboard Date 4/02 Here's what I have; MU440EX Motherboard for Intel Pentium 2 & Celeron Processors Intergrated with AGP Graphics and PCI Audio BOXMU440EX AA 702993-403 IUMU82112710 Date 2000 1.) Intel Celeron Processor 466MHz Processor Core Speed 128KB Cache fan heatsink version # 737834-001 MM # 822441 66MHz system bus 128KB L2 Cache Duel Independent Bus Architecture MMX Media Enhancment Technology Date # 5/99 2.) Pentium Processor with MMX Technology 233MHz W / MMX Item # 0323009 MFG# BOXBP80503233 MM # 813082 FPO# L7421952 Date 11/97 3.) AMD ATHLON Processor 650MHz 200MHz system bus 128KB High Performance L1 Cache super Floating Point Unit I also have two cards that I don't know what they are for; Intel Celoron 6910161 79080161-0754 09190358 SL39Z 400/66 Costa Rica B121 Intel Celoron 6910162 79080161-0545 09190358 SL39Z 400/66 Costa Rica B121 4324 Ethernet Card RJ-45 P/N 63H2449 ASSY; SB0110240-01N 9/22/04 Intel 109X1512A2036 Sanyo Denki 600/512/100 2.0V SI 99290661-0267 Malay '98 SL3JT This is what I have and if someone could help me with what will work with what and what will not work with what. I have been trying to get this thing going for about three months now. Also if any of these do work together will I have to do anything with the BIOS. If anyone knows of any video and/or step by step instructions on this please let me know. Thank you to all for any help.

Asked by madrasi 8 years ago


Two rotating discs, synced and remote controlled.

I realized that I change the angle of my speakers many times a day and it gets really cumbersome. To use my time better, I thought that I'd be nice to have motorized rotating discs under each speaker, wired so that I could adjust their angle from a simple remote controller on my desktop. This would be because if there's a program, the speaker angles would always remain in sync in relation to one another, and because sometimes the speakers are actually located a bit inconveniently in terms of getting near them to adjust the angle manually.  Take a look at the attached image. I can't get that stupid image uploader to work, it uploads but doesn't keep the file, so here goes:  https://dl.dropboxusercontent.com/u/31684214/Speakers.jpg Before you start criticizing it, don't: The point of the image is to demonstrate a principle. It doesn't tell anything about the room that the furniture is in. It isn't in scale. The sound fields of the speakers aren't trying to portray reality accurately, they're just there to make a point. Everything in the image is a rough sketch and its purpose is to make explaining easier.  As you see, the situation is that sometimes I sit at the desk, sometimes at the back of the room. If I keep the speakers pointing almost straight (like image 2) while sitting at the desk, I feel like most of the sound really "opens up" behind my back only, going past me. If I keep the speakers in 45-degree angle (image 1) but decide to watch videos from the sofa, again I feel like the sound isn't quite pointed at me and it's especially difficult to listen to dialogue. Before you start talking about the room - yes, I know about acoustic treatment and I'm taking it onto account already, but my auditory processing isn't normal so the acoustic treatment alone isn't enough, speaker angles make a huge difference for me. I'm saying this because the internet is full of people who get too caught up on the actual principle and start explaining why they think that I don't need something or don't have a problem with something. From having manually adjusted the angle thus far, I already have the experience of how this makes my life easier. I'm looking for advice/help or someone to make this for me as a service. Due to shipping costs, makers should be in Europe only. Advisors who could guide me through, doesn't matter where you are. I'm guessing that besides the disc parts, the remote control would require knowledge on electronics and coding of microcontrollers. The controller could either have a wheel or simply two buttons, one closing the speaker angle, other spreading it wider. The angle range only needs to change within 90 degrees so that suffices, but the program doesn't need a specific angle limiter made if it happens to be able to turn, say, 360 degrees. Taking ideas of methods, estimates, part choices and possible compensation fees!

Posted by rikuzenith 2 years ago


Amazon's very expensive cable, and the comments for it.

Http://www.amazon.com/AudioQuest-K2-terminated-speaker-cable/dp/B000J36XR2/ref=pd_sim_sbs_e_18 I was flipping around on Kotaku, and came across a page talking about the MASSIVE rip-offs involving HDMI cables. I read the article and found this link in the comments. This is a $9,000 audio cable from Amazon. I went down to the comments (mostly to see if some idiot bought this), and found some interesting comments. And by interesting, I mean I fell out of my chair laughing.  -------------------------------------------------- Some comments: " We live underground. We speak with our hands. We wear the earplugs all our lives. PLEASE! You must listen! We cannot maintain the link for long... I will type as fast as I can. DO NOT USE THE CABLES! We were fools, fools to develop such a thing! Sound was never meant to be this clear, this pure, this... accurate. For a few short days, we marveled. Then the... whispers... began. Were they Aramaic? Hyperborean? Some even more ancient tongue, first spoken by elder races under the red light of dying suns far from here? We do not know, but somehow, slowly... we began to UNDERSTAND. No, no, please! I don't want to remember! YOU WILL NOT MAKE ME REMEMBER! I saw brave men claw their own eyes out... oh, god, the screaming... the mobs of feral children feasting on corpses, the shadows MOVING, the fires burning in the air! The CHANTING! WHY CAN'T I FORGET THE WORDS??? We live underground. We speak with our hands. We wear the earplugs all our lives. Do not use the cables!" - By Whisper ---------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------- "If there is one cable I would whole-heartedly trust to my Chimera-hunting needs, this would be the cable. No other cable has the tensile strength to properly and efficiently garrote a lycanthrope, asphyxiate an Esquilax or even gag a mermaid. Last week, using my trusty AudioQuest K2 (retrofitted with lead weights, bright orange latex paint and a generous coating of crushed glass stolen from the window of an abandoned church at midnight), I managed to snuff 3 golden unicorns in swift succession!  Pros: Quickly tears through scales, fur, bone, and adamantium with ease  Coils and uncoils from hip holster (optional) quickly and quietly  For a product fabricated from 1,000 Onyx Dragon fetuses, the price is unbelievably reasonable!  Cons: Shipping from the R'lyeh took far too long  Doesn't come in 10' lengths (which would be perfect for hydra, cerberii and other multi-headed creatures)  After every use, I can feel 6 ounces of my soul slipping from my core into the ether. But this may be due to the fact that I prefer to work without gloves. YMMV.  Overall, I would recommend that any hunter buy one, nay, two, of these immediately, and experience the difference that upgrading to the K2 will make in your next quest!" - By Valannin "Pantheon Outcast"

Posted by ry25920 6 years ago


Free Hardwood, Dragon Eggs, Green Explosions...

Sign-up for our newsletter here. Jan. 24, 2008 Welcome back! This week we announced the Get the LED Out! Speed Challenge. Make an awesome Instructable featuring LEDs and win a TV-B-Gone kit! The Homemade Holidays winners have been announced. See who won here! Which of our 14 great finalists should win the $15K VersaLaser? Help decide! Check out these cool instructables! Make a gorgeous Dragon's Egg Turn a regular egg into a fantastic looking dragon's egg in a few minutes with a bit of hot melt glue gun glue and some paint. posted by KaptinScarlet on Jan 23, 2008 Encode data in 2D on your T-shirts, business cards and stickers ! Use QR code, a 2D bar code, to encode fair amount of data that can be read with cell phones! posted by 5Volt on Jan 17, 2007 How to Start Fire with Water! Start a very cool green combustion with just a few drops of water!posted by pudi.dk on Jan 17, 2008 Carrot Caviar Jump on board the Molecular Gastronomy train by making up some carrot caviar in your own kitchen. posted by mzed on Jan 18, 2008 Awesome led cube You never know when you might need a glowing cube to convince people you are from the future. posted by AlexTheGreat on Jan 23, 2008 Speed Challenge! Vote on the finalist pages! Book shelf? ...what book shelf? Here is a method of displaying the artistic covers of a book when space on a table or shelf is not available for displaying it. posted by watermelon on Jan 20, 2008 Make your own Roll-Up Keyboard Have you ever wanted one of those pricey roll up keyboard but didn't want to spend the money? Here is a quick and dirty way to make your own. posted by Auger+Duval on Jan 22, 2008 How to Remove A Fishing Hook Using Fishing line If you get a fishing hook stuck in your finger, salvation is a quick tug of fishing line away from you. posted by back-cast on Jan 23, 2008 Build your own computer Why buy a computer from a manufacturer like Dell or Gateway, when you could build a more powerful computer for less money? posted by bmlbytes on Jan 19, 2008 How to Get Cheap or Free Hardwood Lumber Here's how to buy new lumber in bundles for less than firewood. This seems to work best for hardwoods, cabinetmaker type stuff. posted by TimAnderson on Jan 21, 2008 Show us your yarn! There's still time to enter pictures of your yarn projects in the Lion Brand Yarn Challenge!! Here are some of the 222 projects already entered- check them out, talk to the crafters, and get inspired! Hats Afghan Shawl Ornaments Goldfish   Now go make something awesome, and I'll see you next week! - Eric

Posted by fungus amungus 10 years ago


What is a wavefunction?

In the Physics topic on the EPR paradox, NachoMahma asked about wavefunctions and "collapse."Let's put aside the whole "collapse" issue -- not all physicists agree that it is a sensible concept. NM's comment has a link to the Measurement Problem, and I'm not a good enough theorist or philsopher to contribute to that argument.What is the wavefunction? "Is wavefunction only a convenient way to say it's located somewhere close to here, but we're not sure exactly where until we measure it?""At any particular point in time/space the object is in a definite spot with a definite set of properties, but we can only make a reasonable guess?"No. The wavefunction, spread out over all of space (I'm speaking non-relativistically here, but the formal interpretation applies to spacetime), is the fundamental "thing" in QM. "Objects" are wavefunctions. If the wavefunction is localized (non-zero for a small contiguous set of coordinates, zero everywhere else) then treating it like a particle makes sense. Otherwise, it doesn't; the thing behaves like a wave, showing diffraction, interference, and lots of other effects. My preference, when I talk about these things, is to just call them "quanta." They are not particles, they are not waves; they are their own kind of entity with well defined, if really hard to understand, behaviour.How do I get to that point? Well, quantum mechanics is one example of a "field theory" (electromagnetism is the most familiar classical field theory). The equations we write down (the Schrödinger equation non-relativisitically, the relativistic Dirac and Klein-Gordon equations) to describe how quanta behave are coupled partial differential equations (PDEs), which relate the values (and derivatives) of the field at every point in space to their evolution in time.A PDE which relates the time and spatial properties of a function is either a wave equation (if the solutions are sines and cosines) or a diffusion equation (if the solutions are exponentials). The Schrödinger equation is a wave equation, and we call the solutions wavefunctions. Electromagnetism also has a wave equation, which is how we get radio, light, etc.The difference is that the functions in EM are "real valued:" the value of the field at each point in space/time is a regular floating-point number (the "phase" in EM is determined by the relative values of the field and nearby points). The wavefunction is a '''complex valued''' field -- at each point in space/time, the field has both an amplitude and a phase (or equivalently a real and an imaginary component). This means that wavefunctions can interfere in ways more complex than simply "adding" or "subtracting", which can have quite interesting consequences.You get probabilities by taking the square (norm) of the wavefunction. This procedure gives you a real value, a probability, at each coordinate. When you make a measurement, those probabilities determine which coordinate value you see as the "location" of the quantum. The actual result is random, but that isn't because "we're not sure exactly." The quantum objective does not have a single coordinate location until we make the measurement.How that happens, whether by "collapse," "decoherence," "many worlds splitting" or something else, is a subject of intense philosophical and experimental argument.

Posted by kelseymh 9 years ago


My mystery story

I'm in 8th grade and I have to write a mystery, please leave feedback and suggestions. I just want to make sure that this mystery would make sense to someone else, someone else who didn't write it. A rich man laid dead in his room with a will next to his body. He had many cuts and died from blood loss. As the police asses the situation they notice a knife next to him, the police thought suicide. Then they noticed a bloody will next to him, on the will it said that he would leave everything he owns to his butler. The inspector, inspector Higgins, found that it was odd the late Mr. Light left nothing to his wife, Mrs. Light who was sobbing next to the inspector. “Where were you when your husband was murdered?” asked inspector Higgins. “I was out shopping, I was getting him a Christmas gift.” Answered Mrs. Light “Do you have proof of this?” “Why yes, yes I do! Here’s a receipt from Kronix, the fancy watch store.” “Hmmmm. Here on the receipt you bought it about an hour ago, there would be have plenty of time for you to have commit this murder.” “How dare you say such a thing!?! I loved my husband, and I can explain about the time frame, Kronix is about an hour away, so it takes me time to get here!” “Ok, ok, ok, but what about this butler of yours, where is he?’ “I don’t know, he should be in the house.” The inspector and the police searched the house. The inspector came to a closet door and tried to open it, but it only opened an inch. “Officer, please help me open this door,” said the inspector. After much pushing they got the door open enough so that the slim inspector could slip into the room where he saw a shocking sight. “The butler’s in here, he was laying next to the door, and he appears to be dead from cuts.” Paramedics came rushing in . “He’s not dead, he’s merely unconscious, and we must get him to a hospital. A day later when the butler made enough of a recovery to talk. “Mrs. Light killed Mr. Light, she started slashing at me, but then I ran into the closet, which was foolish. She attacked me in there and I passed out, she must have thought I was dead.” Whispered the butler. “You’re under arrest for the murder of Mr. Light.” Announced the inspector towards the butler. How did he know the butler killed Mr. Light? The solution: When Inspector Higgins found the butler he was laying next to the door. According to the butler’s story he was being attacked in the closet, which means the murder would have to leave, which would have been impossible because the butler’s body kept the door from opening.

Posted by guyfrom7up 10 years ago


Roomba mapping and quadriplegic assistive device

Hello,I am a high school student in the San Francisco bay area. After attending Maker fair this past weekend and talking to the instructables staff, i am going to take on one of your challenges and developing a roomba mapping platform, and much more. Because i am still a student, i don't have the funding to purchase my own roomba, so this is my application for the scholarship. I have attended many lectures that have been made by the Stanford DARPA team, i would like to take some of their ideas and apply it to the roomba platform. My roomba will be able to map it's surrounding, where it will then process that information, creating an optimum route. I will also utilize complete use of all the sensors that are provided so you can keep track of everything that is going on. Mapping will be one feature, there are plenty more. A nice control system for your roomba will be made so you can access everything you need to know about battery life, run time, dirt picked up, etc....in a nice GUI layout. RSS feed can also be sent to your laptop or cell phone so you know what exactly is happening with your roomba. And because this platform will be used very often to guard my precious projects, i will throw on a wi-fi video camera and control system. This will enable me to control the roomba over the internet to scout around and see what my dog is up to. The video feed will also be told to record one pass around the entire house, if anything abnormal appears (chair knocked over, loud nosies, etc.)I am also a member of this years Palo Alto High School Lemelson-MIT invent team. Our project is to create an assistive device for quadriplegics so that they can control their world using countless lase r activated household items. Our quadriplegics friend Henry Evans said that it would be amazing to be able to control a roomba that drives around and plays with his dog. I will make it my personal goal to create a platform which henry can use to control this roomba using the assistive technology our team is developing. (http://robotics.paly.net/)There are plenty of other things i would like to add on if i have the time. The main goal is to make the roomba map it's surroundings, and be controllable by our friend Henry.I have so many more ideas i would like to add on to this if i have the time, and i ensure you that i am very capable to complete these goals by the required time frame. I'm very excited to take on this project, and i believe that with your help i can really do something amazing here that can be appreciated by the entire robotic community.--Daniel FukubaPalo Alto High School

Posted by dfukuba 11 years ago


Keith-Kid's version of: The Hitchhikers guide to.. The Earth!

I just read this forum topic, and wondered why it didn't go anywhere.I read all the negative and positive comments on it. I still think it is a great idea and a great way to get the community to work together even more.Quote from the original post: So here's the idea.I've been thinking how cool it would be to do a collaboration and create a giant travel guide. But not just an ordinary travel guide, one written by all instructables members.We have enough people on this site that we could get a pretty good start on it. I think the idea would spread fairly quickly.For example, I would write a brief something or other about my state (North Carolina), and then a full length guide for Boone, the university town that I live in. I would include basic information like population, size, etc., and also where I like to eat, what kind of tourist attractions are here, why ASU beat Michigan, etc. Some one else could add to what I wrote, and someone else could add a guide for the Charlotte/Denver area, and so on. For another state/province someone would just add a new step, etc.I realize it wouldn't be an Instructable, in the strict sense, but it would be helpful nonetheless. Not to mention we could have a lot of fun with it.What do you all think?What do the Instructables staff think about something like this? (In light of the fact that this is not a step by step guide to any one thing)Let the discussion begin. =)i know a lot of people would argue that this is a DIY site, not a travel site. And I know there are tons of other sites like this. But here are a few of my points about why this would be a good idea:Great way to get the community even more unitedAlthough wiki...whatever it was is great, anyone can edit and erase stuff. Instructables has a very careful community that watches out for this sort of thing. Not to mention the higher quality that comes from an entire community that cares, not just one or two honest people out of 100 prankstersGreat way to learn about diffrent cultures and interact with them. Instructables has helped me a lot in my school work. I've learned a bit from UK from kiteman, and a lot of people know that I ask for a lot of homework help in the forums! My point is that this site is mainly a self improvement center, not just for a house or project, all these things just help improve ourselvesI'm thinking that each step could be a place. If there are a lot of things from one same place, there would be a couple of different steps.We could have an index in the intro that links to each country's steps.We could provide a bit of history, culture, society and Pictures!Ok now you can talk

Posted by Keith-Kid 10 years ago


Quick-vite idea

*UPDATE 2-15-11* If you are good with cell phone apps and website building and you would like to use my idea please message me. If you do make this all I ask for is a very small cut of the profit, but I really doubt anyone would want to make this anyway. Well, if you do just send me a private message and we can talk about it. Keep in mind you still may NOT TAKE MY IDEA UNLES I LET YOU! IT IS STILL COPYRIGHTED BY ME! Hey everyone, I just wanted to share my idea for a possible website I will be making in the future. I got the idea recently when my mom wanted to invite people over to the superbowl and sent out the emails that day. Many people didnt respont because, lets face it, many people dont check their email more than once a day. My idea would be a website based service that you could sign up for for free or become a member for a monthly fee. How it would work is you could type up your message and then send it to a pre-saved group of all the recipients phone numbers, and from there numbers could be added or removed. The site would then send a text to all of the recipients with instructions on how to respond. It would be something like "I'm having a b-day party at my house. 3:00-6:00 at 52 blah blah road. 'reply the number of people followed by y for yes, n for no, or m for maybe. ex. 3y 2n' " Then the results would be replied back to the website where it would compile a list of who and how many could and could not go to the event. Since sending the texts would cost some money it would have to be made up by advertising space as well as limiting the amount of invites allowed to be sent by the free users. Members benefits could include increased invites per month, more recipient groups allowed to be made, and a feature where you could text your website number from your cell phone and it would update you with how many people could and could not go. Since I'm only 16, I would not know how to create this site or be able to spread the word very well, so I would just like feedback on the idea for now. Please tell me what you think about the idea, and if you think its stupid be honest and tell me. Thanks :) And if you take my idea and start making money off of it, I will press charges. I emailed this to myself to sort of "copyright" it and this forum topic will not be edited ever so this will prove it's my idea as well. So please don't steal my idea.

Posted by Electroinnovation 7 years ago


How to limit welder current (heat)? Answered

Hi All, I admit to being electrically dumb, well one step above dumb, I'm a software engineer not electrical engineer, but I don't even know enough enough to be dangerous yet:) I'm going to be converting an ac welder to dc. It's a harbor freight 90 amp flux wire job, comes from the factory as AC for some unknown reason, but should be DCEN for FCAW welding. There are several walk throughs availabile online. I don't know the rules for linking to other forums, so I won't post a link, but you can google 90 amp welder dcen conversion if you want details. I attached an image of the circuit I got from a post by bluecatfish onweldingweb. I'll be taking the transformer output, running through a full bridge rectifier to convert to rippled DC, using capacitors to remove ripple, and lastly running through a torroid inductor. Another problem with this welder is it only comes with high/low power settings. The low is still too hot and burns through thinner metals.  I want a way limit current further, but maintain voltage for a stable arc. I'll be adding a bleeder resistor to drain the caps, which gave me an idea. At first I thought to use several more resistors in parallel with the bleeder to reduce current. I imagine this might work but be horribly inefficient. It would still use all available power from the supply, just converting some of it to heat, leaving less power for the arc. I've read that adding resistance in series will reduce current, but won't that drop voltage available for the arc? Then I was thinking, I have a motor speed control for a router. I believe this is a pwm. Could it be used to chop the mains input (120v 20a) to the transformer and reduce overall output without effecting voltage(I've read this is 38v 80a in the factory state before my mods)? since I'm adding capacitors downstream, will they just discharge too fast leaving me with ripple/pulsing? If so, how would I slow the discharge rate? (I'm looking at 3x or 4x caps 22,000uF @65v in parallel on a bus bar, so 66,000 or 88,000uF total). Sorry if in not making sense, as I said in the intro, I have a lot to learn, and right now, the more I read, the more confused I get. Edit:  After more research, and to hopefully use correct terminology, I think I'm talking about using a current divider when referring to multiple resistors in parallel to the welding leads. I think I'm referring to a switching regulator when I suggested using a pwm to chop the transformer input. Can either of these work like I'm hoping? Is there a better way, that is relatively simple?  Thanks in advance for your patience and help. 

Asked by DonaldF9 2 years ago


Instructables Joins Autodesk

The Instructables community is incredible: you build, bake, and create amazing things, then share your projects and ideas with the world. I think it’s great when someone builds a project using instructions from our site, but it’s even more amazing when we inspire someone to start (or finish) that project they’ve always dreamed of. This has been my vision for Instructables: to have a positive impact on the world by giving passionate people great publishing tools to document their projects, and connect them to a community full of like-minded people. Today I’m able to share my plan for accelerating that vision, and making Instructables an even better place to be. I’m proud to announce that Instructables is becoming part of Autodesk. Everyone here at Instructables HQ is absolutely thrilled, because this is going to be awesome for the entire Instructables community. Instructables will still be the same site you love: we’ll keep the Instructables name and URL, the whole team is staying on, our policies haven’t changed, you still hold copyright to your projects, we’ll still run awesome contests, and the Robot isn’t going anywhere. However, we’ll now have the resources to make some improvements to the site I know our authors and community will love. Autodesk gives us the scale and support to grow and improve Instructables, build some great apps, and continue our mission of creating a positive impact on the world. Everyone on the Instructables team will become Autodesk employees, but we'll still wear our Robot t-shirts with pride. Autodesk is a great cultural fit for Instructables. They make tools for creative people: they’re the world leader in 3D design, engineering, and entertainment software. Even if you don’t recognize the name Autodesk, their software has powered the movies you watch, and designed the cars you drive and the buildings you work in. Instructables will be the community arm of the same team that makes 123D, SketchBook, Homestyler, and Pixlr, which will help provide creative tools, inspiration, and services for all types of creative people. Here’s Carl Bass, Autodesk’s CEO, talking more about his vision for the future of DIY. We’ve had a great time building Instructables, and look forward to taking it to the next level. Thanks to the Instructables team for all their hard work, our investors including O’Reilly Alpha Tech Ventures and Baseline Ventures for believing in us, and to all the authors and community members who have made Instructables a great place to learn and share ideas. I’m confident Autodesk will be a great home for Instructables, and will help us make Instructables an even better place to share your projects and ideas. I’m excited to join the Autodesk team, and get right to work. I’d also like to hear what you think: click here for info on an upcoming live Q&A event, and click here to suggest how we should co-opt the resources of a multi-national corporation to make Instructables even more awesome. This announcement is duplicated on our blog here.

Posted by ewilhelm 6 years ago


To Pier 9, Thanks for Everything !

Tl;dr : 1. people are the greatest resource at the pier 2. sometimes it’s hard to work due to too much awesomeness Seriously. Me and my collaborator, Radamés Ajna, had a couple of projects we wanted to do in the spring/summer of 2014, and while looking for some shop space in Oakland, someone recommended we check out the AiR program. We applied. We thought that if we got accepted Autodesk would give us a desk, some nice hand tools, and access to their software. And that would’ve been great. Coming from Brazil, where it feels like we solve everything using hot glue, zip ties and duct tape, that would have been more than enough. Weren’t we surprised when we visited the shop. . . Holy crap, everything is here. Some of the machines are bigger than my apartment, and there’s even a swimming pool ! I’m pretty sure everyone has written about all the great machines, because, yeah, they are great, but to me, the most important aspect of being an AiR at the pier was the people. The shop staff who not only teach you how to use the machines, but also have enough collective experience to help you solve any kind of material/machining/construction problem. Want to vacuum form foam? No problem. Want to glue glass to cement? Someone has done it before. Want to weld titanium? Easy. Having access to the tools is good, but having people that know how to use them is even more awesomenest. The same is true for the CAD people who help you set up and use all kinds of modeling and design software. Not only that, but they get excited when you use their software. Not having had a lot of experience with 3D modeling prior to my residency, it was a great opportunity to learn it using Fusion 360. Another very special group of people were the other AiRs. The ones that came in with us (Anouk, Alex, U-Ram, Adrien, Paolo, Scott, Mikaela) and the ones that were already there when we  arrived (Andy, Aaron, Rima, Andreas, Ben). What a diverse crowd. It was great to get to know everybody, and also to be able to share experiences and expertise. I don’t even know how many times Paolo and Andy saved me from searching for “metal thing with a hole” or “thing with a thing inside” on google, because they knew exactly what I was looking for. Invaluable! Sometimes it’s a bit tricky to explain your project and get everyone excited about it, because everyone has such a diverse background and set of interests, but learning how to talk about our projects from different perspectives was a challenge that I enjoyed. And, last but not least, the IRL Instructables community; another very diverse, active and enthusiastic group of people at the pier. I don’t know how they do it, but it seems like they are always happy, and making cookies. The sum of all of these people is something awesome. There’s always something interesting going on at the Pier (even at night and on the weekends), which sometimes can be a bit distracting, but also motivating. I will sorely surely miss them all.

Posted by thiagohersan 3 years ago


Since We're on The Topic of Dreams...

Well, I've seen quite the lot of dreams being posted, and it just so happened I had one last night:Starting from when I can remember:Me and two of my friends got selected to fly into space to investigate mysterious disappearances of items from the Space Station..So we go through training, and tests, and finally comes the date of liftoff(I can't recall much though here)while were are in the space station, I notice something...this isn't the space station NASA sent us to, Its an exact replica of the parking lot at Macy's in my town...I look around..and my one friend (cody) says "Hey man, thats your car isn't it?""Wait a sec.. IT IS!"I walk up to the car, and reach into my pocket...my keys are chiming off each other as my hand shakes..I unlock the door, and sit inside..checking the sun visor, and to my astonishment, there is a picture of my crush (whom I wont mention)the picture is folded and faded..I get out of the car, and look around..I'm back in Cape Canaveral!in the parking lot of NASA...as I walk with my two friends in the doors, I am greeted by Eric Schmidt (CEO of Google)((which I never knew till i searched for it today after my dream))he says "It'll be great having you with us in our mysterious hunt for the missing items in the Space Station."My friend (cody) says "Wait a second, I forgot my travelers guitar" (in the trunk of his car)so we go to get his guitar and as he's pulling it out, I notice something in his car..A GUN!"Why do you have a gun in your car cody?"as I finished saying that, these two men ride up on a moped and demand (in broken English):"Best not make any sudden movements"as the two guys talk amongst themselves, I whisper to cody"Psst, grab your guitar, and get down"He grabs the guitar, and ducks down as I reach for the gun, which ends up to be a .22-250, and shoot the one guy in the leg, he falls, the other guy pulls from his pants a handgun, he fires three shots, and I fire two, they all miss,I load my second to last shell, and take aim...POWthrough the chin, into the throat, and out his neck my shot traveledhe lays motionless on the ground as his partner, hobbles on to his moped and rides away..I gather myself, and get my friend, as we walk by the entrance to the building I see these two gentlemen playing a tune, my friend sits down, and strums along..they were playing Boom Boom by John Lee Hooker...which incidentally was the song I awoke too this morning....prolly the weirdest, most vivid dream I have ever had...Sorry about the plethora of misspellings, non-capitalization and spotty punctuation.. its late, and I need sleep..

Posted by bumpus 9 years ago


USB Telescope, Chocolate Strawberries, Custom Snowboard,...

Sign-up for our newsletter here. Feb. 21, 2008 Welcome back! The Share the Love: Valentine's Day Speed Contest ends this Sunday, so get your romantic Instructables up this weekend! The winners of the Get the LED Out! Speed Contest have been announced. See who won here! Check out these cool instructables! Conductive Fabric: Make Flexible Circuits Using An Inkjet Printer Easily turn out flexible circuits to create some funky projects. posted by mikey77 on Feb 14, 2008 Remote shutter trigger for digital cameras Make a remote shutter release for your Canon digital camera (and some other brands) for about three bucks in under five minutes. posted by deth2all on Feb 20, 2007 How To Shave Without Getting Razor Bumps Here's how to avoid those little ingrown hairs known as razor bumps. posted by SteamKit on Feb 18, 2008 A better laptop stand for bed Make a simple but incredibly useful Laptop Stand for around $15 and 30-60 minutes! Great for use in bed while typing, browsing, and watching movies. posted by jumpfroggy on Feb 13, 2008 Simulated wood grain for metal boxes Prepare a metal box using a buffing technique that can simulate wood grain, birdseye or other finishes for a sleek look. posted by amz-fx on Feb 15, 2008 Spread the knowledge! Contest closes this weekend! Win a $350 Yoyo! A Dozen Red Origami Roses A unique twist to the traditional giving of roses to a loved one. Handmade origami roses are everlasting and inexpensive to& make. posted by thydzik on Feb 15, 2007 Cardboard Savonius Wind Turbine Build a Savonius wind turbine made out of cardboard to see what works. Low-tech rapid prototyping at its best. posted by rhackenb on Feb 16, 2008 How to Eat a Banana Like a Monkey OK, the actual eating isn't too different from humans. The real magic is in how monkeys peel their banana to get at the goodness inside. posted by fungus amungus on Feb 20, 2008 Build a real bell-striking clock for your PC Sound effects on a computer can't match the nice tones you can get from a real bell. Here's how to put the two together. posted by 5Volt on Feb 18, 2008 Make a Bloody Valentine's Heart Present your loved one with this anatomically-correct heart, a card ("You have my heart!"), and a ring hidden in the heart for a day to remember forever. posted by theprojectmaker on Feb 16, 2008 Show us your yarn! The Lion Brand Yarn Challenge has closed for entries, so it's time to vote for your favorites. Here are some more of the over 450 projects entered - rate your favorites, talk to the crafters, and get inspired. The Lion Brand group lives on, so keep posting your yarn creations! Bike Kippah Skirt Afghan Bootcovers   Now go make something awesome, and I'll see you next week! - Eric

Posted by fungus amungus 10 years ago


Last Day at Instructables

It's my last day here at the Instructables office. It's been a wonderful summer, and I'm glad to have worked with everyone here: at the office, and the people I've interacted with on the site. Curious about my impact this summer, I did a bit of statistical analysis on the last three months, and I wanted to share it with you. It's not completely precise, but it gives a good ballpark. Ironically, though I have done laser cutting, 3D printing on both the UP printer and the Objet, CNC embroidery, and even CNC papercutting, I never bothered to install the office printer. So I had to show my graphs from a laptop screen. Here are my stats, as of August 17th: I published 69 Instructables total this summer in about 89 days, (65 official work days). (I have a lifetime total of 88 from some previous Instructables.) Here's a graph of the Instructables building up over time. (Blue is data; the thin black line is a fitted trend.) It's pretty linear (with a slight dip at the end of July, when I went camping and couldn't post). The averaged rate is about 75% of an Instructable every day this summer, or just over one per day if you only count work days. 63% of my summer’s Instructables were featured. I had a quick learning curve; after the end of May, 75% were featured. It was a little more difficult to extract further data, so the remainder of my statistics refer only to Instructables I published while working here this summer which received over 1,000 total pageviews. Overall, these Instructables generated 294,224 pageviews (almost three hundred thousand!), 89% of which were from unique viewers. People spent a total of 14 hours, 11 minutes, and 28 seconds viewing these Instructables. To the left, you can see my summer pageviews accumulate, and to the right, the day-by-day graph of my pageviews. The peaks on the right graph represent, in order, my Infinity Dress, the Clockwork Beetle, and the Plaster Face Cast. (Since I made these charts last Friday, it doesn't take into account my Temari, which whould have created a spike as big as that of the Infinity Dress over the weekend.) Although those are my top-viewed Instructables from the summer, my favorites are actually these ones: (and working on Psycho Scooter Scramble, of course) I'm glad to have such a measurable effect on the site and the Instructables community. The people of the site and in the office have made a strong impact on me as well. This is the first place where I feel a true sense of community among a group of people I know exclusively through the internet, and I want to thank all of you who I've never met in person for being my friends. In the office, I'll thank you personally. It's been a great summer, thanks to you. I'll still be around the site from time to time, but I can't devote every day to it. I'm finishing up my Neuroengineering degree at Olin and working on a few other things besides. But I'll be around, and I hope to talk to all of you from time to time. See you around, and happy making! -SelkeyMoonbeam

Posted by SelkeyMoonbeam 5 years ago


3X Gasoline Engines Sniff Vapors and Burn Water

Sounds ridiculous doesn’t it? How can water possibly be turned into a useful fuel by just burning it? Sure we can use hydrolysis to separate water into its hydrogen and oxygen gases, and then burn the hydrogen gas as fuel, but that’s not what I’m talking about. Believe it or not, jet engines do it, they have used water to enhance engine thrust, so why not have IC-engines do the same thing? There’s a catch here, since only vapo-engines (  http://goo.gl/QQ42k ) are capable of performing this trick successfully, they must first be introduced into the design mix. Since IC-vapo-engines burn very effectively they run hot, and water would be used as a better alternative than injecting extra wasteful fuel to cool down the engine as is done in today’s engine to prevent knocking. Why don’t we just inject water in today’s engines you ask?  Because they run so poorly already, that the water would extinguish the IC-combustion process. In technical jargon this is known as the ability for an engine to burn lean with an air-to-fuel ratio greater than ~15. Today’s engines can’t sustain a leaner combustion than ~22  without extinguishing themselves. By adding water droplets we further increase this ratio to unsustainable conditions. Unfortunately, this wasteful, richer burning keeps the engine running better by keeping the fuel cooler. In contrast, our vapo-engine is capable of burning unbelievably lean ratios of ~30+. Lean combustion means almost no pollutants and virtually green combustion exhaust products of only CO2 and water. No catalytic converters necessary here, as opposed to running today’s rich engines with their unavoidable polluting exhaust emissions and heavy reliance on catalytic converters. So the irony here is that since IC-engines already run ratty, let’s waste a little more fuel and run richer just to cool down the engine. This prevents engine knocking (the dieseling of an engine due to unwanted, poorly timed, premature combustion) which occurs from the pitiful amount of fuel that does vaporize and burn correctly. Sadly, engineers have cleverly learned to waste fuel for the sole purpose of keeping our IC-engines cool, above and beyond the engine’s normal water cooling system. It gets even better, as the richer the engine runs the more we need to rely on expensive catalytic converters to keep exhaust emissions in check!  Vapo-engines also require cooling, even more than today’s engines, but their advantage is the capability to burn very lean. So instead of ridiculously injecting extra fuel to cool them, like today’s engines, we inject water droplets mixed in with the injected fuel vapor. The water droplets perform three functions; 1) they reduce excess fuel consumption, 2) they cool the engine walls to prevent pre-ignition and knocking which provides better combustion, and 3) they enhance the fuel-vapor detonation force created on the piston from the expanding superheated steam which further helps engine performance. So in a way we are burning the water to generate steam power like a locomotive.   

Posted by RT-101 5 years ago


Can I fix this? (Update!!!!)

Ok guys... I really need some help, I know there are some motor-heads around here on the forum, I really need some help from people on here with metal working/motorcycle/general small engine knowledge!!! See umm... yesterday, yeah well look at the pictures.. and trust me, my body is almost as mangled as the bike in the picture. I don't stop for NO ONE though, I want to fix this as my dad is pretty pissed about it (this weekend is father's day and he was looking forward to taking it out for a drive). Not only that.. MY BIKE IS TOTALED F?CK! I've done some googling and I can order some parts from the baja powersports website, as they have a parts catalog and even pictures to go with each part they sell, the weird thing is that they have like ALL the parts I could ever replace on the bike... except the front suspension.. like seriously everything under the kitchen sink EXCEPT any major front end parts (like said suspension)... Anyways guys, can someone PLEASE help me out here? I called a number on the baja powersports website and the guy said they don't directly deal with parts (even though it said it was a Canadian toll free parts number) and he asked for my postal code and found the closest "shop" next to me which is about a 30 min drive from here but oh well, I need the parts! Anyways look at the damage, it's pretty screwed up as you can see in the picture. But I want to know if maybe I can errr "bandage" it up a bit until I get said parts. The rim is kinda bent too... but I think it'll still roll forwards, I have the front end back together, my the left side sheered right off the bike and that part of the suspension will have to be replaced aswell.. Long post I know, but I'm a bloody hurting unit today, and my dad is very pissed off with me, this is a BRAND NEW bike guys! Surely someone can help me figure something? UPDATE>: After playing some phone tag and talking to A LOT OF PEOPLE over the phone, I'm getting like $500 worth of bike parts shipped to me within one business week, RIGHT TO MY DOOR! I'll tell you now when I hung up the phone with the guy, I nearly jumped through the ceiling, it's all gonna be covered under warrenty, even the shipping!!!!! I told the guy I'll be thanking him until next year! So all in all, my knee is still buggered up, but I'm a lot happier knowing that my 2 month old bike isn't a COMPLETE write-off! Thanks for the help anyways guys.... oh wait what am I saying, thanks for the criticism! But all in all, thanks for being by my side to laugh at my foolish mistakes fellow instructables members... I hope that everyone that reads this topic will see this and learn to be more responsible when driving ANY motorized vehicle!

Posted by Punkguyta 8 years ago


Carbon Button Lamp

The Nikola Tesla group forum is asking for new projects, so I'm posting this as a suggestion. I would love to build it myself, but I lack the tools and money. This is my first contribution to Instructables, so please comment constructively.Nikola Tesla invented the Carbon Button lamp as a kind of incandescent light, because Thomas Edison banned him from using his incandescent filament bulbs. Nikola later discovered that versions of it could also be used in wireless, trans-Atlantic telegraphy, and to investigate what we now call x rays. In fact, he even used the lamp (or something similar to it) to take x-ray photographs, 8 years before Wilhelm Rotgen discovered them.For this reason, I must warn you: this device may possibly generate x rays. I am not responsible for any harm of any kind that may or may not result from re-creating this interesting device.There are phosphors that you can buy that will absorb x rays and re-emit them as visible light. I recommend that you coat the bulb with it until you know for sure that the x rays aren't strong enough to hurt you, or if makes x rays at all. Mixing it with a phosphor made for uv light wouldn't hurt either.Theory of Operation:The bulb is powered by a Tesla Coil, or other source of high voltage, high frequency current, such as a driver for a plasma globe (actually, the modern plasma globe is descended from this kind of technology!)When the power is turned on, electricity bombards the carbon button. Because carbon isn't the best conductor, this causes the button to heat and release electrons into the bulb's vacuum (the technical name for this is "thermionic emission," or the "Edison effect") . These electrons, in turn, excite the remaining air molecules and cause them to create visible light. This is strikingly similar to how fluorescent lamps work!Supposedly, the bulb should shine 10 times brighter than an incandescent bulb.(Note that the excitation of the air molecules, not the incandescence of the button, is actually the main source of light from the bulb.)If anyone decides to build it, please post an instructable showing the steps and finished product. I suggest you get started by reading the patent, number 514,170. You may also want to read part of Tesla's lecture, "Experiments with Alternate Currents of High Potential and High Frequency."To anyone who will attempt this, I wish you good luck!Patent: http://www.google.com/patents?id=UpldAAAAEBAJ&pg=PA1&dq=514,170+tesla&source=gbs_selected_pages&cad=0_1Lecture: http://www.tfcbooks.com/tesla/1892-02-03.htmQuestions:What can one use for the carbon button?Could one use a modern, hollowed-out light bulb for this? (I would think there would be some problems with sealing the globe, and with the stem.)Edit: I recently found the third picture in Tesla's Colorado Springs notes and his "apparatus for the utilization of radiant energy" patent. It must be the single-electrode x ray tube I was talking about before...

Posted by ElectricUmbrella 9 years ago


The ultimate challenge?

There are always good contests available for those keen on competing, but what about a real challenge that might run for many months? I am talking about rediscovering ancient technologies and ways of creating things. We have a lot of evidence that is in massive contrast to what archeologists want to make us believe. Be it the way the pyramids were build or just in what timeframe, the use of technologies thought to be impossible at that time or just the knowledge of things like star constellations that are not not visisble to the naked eye. In a lot of areas it seems not only archeologists but also some "secret powers" try to put a hold on discovering what was really possible thausands or maybe even millions of years ago. Things like the knowledge of distand star systems that are invisible to the naked eye might never find a suitable explanation. But what about tools and technologies used to create stonework that is hard if not impossible to create with our modern tools and technologies? I dare everyone to participate in the impossible! We know thausands of years ago milling, drilling, machining and lathe work was done but we have no real clue how it was done. At times when the rest of human kind was happy using stone tools and otherwise just hunt and gather for food some areas saw an explosion in technology. Within less than a few hundert years some builders in Egypt went from simple and explainable works to stuff impossible to do in today times. Same for India, the UK and the american continent. No hardend steel tools were ever found, no machines, no evidence on the how to, just the perfect work. Here is the challenge I propose: Come up with: 1. A way to cut or drill granite and harder rocks without modern tools or tech and still do it faster and more accurate. 2. A way to match hard rocks to each other with a precision down to less than a mm - as shown in many ancient buildings preferably on a big scale. 3. A way to create delicate carvings in hard rocks, things like hollow heads less than 5cm in size or cravings with spaces of less than 3mm wide and several cm deep - as shown in many India sculptures. 4. A way to build a lathe capable or turning several tons of steel with an accuracy better than half a mm and without electrical or combustion engines. 5. A feasable way to transport and accurately position several tons of stone - again without electricity or combustion engines. 6. A way to create sculptures with an accuracy shown by the ancient Egyptian ones, meaning perfection... 7. .... I could go on but I guess you get the picture ;) The solutions could be as simple as using sound and vibration or as complicated as finding a way to create tools hard and durable enough to proove the archeologists are right after all. And before you cry out that it is impossible: Consider the evidence! We know it was done but we don't know how, so let's show the world how we at Instructables solve the problems noone can explain ;) I can't offer any real contest, prices or such but maybe someone is reading this and willing to provide the base and soem prices?

Posted by Downunder35m 5 months ago


Make SF Meeting

This past Sunday I went to the Make SF meeting graciously hosted by Tech Shop in Menlo Park. I unfortunately do not have names and/or links to work relevant to the presenters, but I will try to give an overview of what I saw as best I can.The first presenter showed a musical interface he made with a laser pointer and a photocell that altered a track of music to correspond with the disturbance of the surface of the water. He told of how he embedded many such bowls in a table and had the laser pointers shining straight down into them from the ceiling so that it seemed as though the water itself was changing the music. He used it a party the previous weekend (side note: I never get invited to parties nearly as cool).Followed him was a man that created a device to interface with a computer as a USB HID. In short, it pretended to be a keyboard, mouse or joystick and then you could send it commands from a micro controller. He had his device installed in a model plane and based on accelerometer readings used it to control a flight simulator. Next there was a man from Google who showed the low-cost Arduino based glowing orb that he was working on based on the Arduino Orb Build Warden. This was presented as one possible solution to have widespread visual indication for monitoring the status of their ongoing projects. Presenter #4 promised not to have anything quite as high tech and passed around a copper bracelet made using copper wiring and traditional cold forge methods. He then spent the rest of the time talking about how he welded the ends of the bracelet with a tig welder made from a microwave much like this one. And even though he promised not to have anything technical to show, he went into the finer points of building your own microwave welder in regards to transformer modification and the importance of finding a reliable metal foot pedal to control the weld. Lastly, someone came from Shape Lock and demonstrated his "Ultra-High Molecular Weight Low Temperature Thermoplastic." Or in other words, you stick it in a pot of water heated to 160 degrees for a few minutes, take it out and bend it into any shape you want, let it harden for a few more minutes and you're good to go. You can use it to quickly and easily make all kinds of high-strength custom shapes and fasteners. It is actually very cool. However, remember, don't stick it in your mouth (or anywhere else!) because albeit non-toxic it will lock your jaw shut and good luck getting that back to 160 degrees. Oh... I should also mention that the meeting was organized and hosted by the legendary Andrew Milmoe.And that summarizes what I saw and heard.The next meeting will most likely be the first Sunday in March and you can get more info on the official Make SF site. Also, there will be a Make SF social gathering next Thursday at Mars Bar in San Francisco (7th and Brannan).It starts around 7 PM and there is rumored to be a special robotic guest attending. (if anyone has more info on any of the presenters please let me know)

Posted by randofo 10 years ago


Decapitation Effect, Pong Hat, LED Blaster,...

Sign-up for our newsletter here. Feb. 7, 2008 Welcome back! The Get the LED Out! Speed Challenge has been updated - now you can win $75 in LEDs in addition to the TV-B-Gone kit! Contest closes this weekend so enter now! Graffiti artists win the $15,000 VersaLaser. Read all about it here! Two new contests launched this week: Share the Love: The Valentine's Day Speed Contest is the place for those romantic Instructables, and Tool Tips Month collects practical advice for using tools of all sorts! Check out these cool instructables! LED Light Drawing Pens: Tools for drawing light doodles Light painting is fun, but getting the perfect lights for it can be tricky. Make your own and build exactly what you need. posted by unklstuart on Feb 3, 2008 LED Hat Display with Pong Pong + 5x7 LED display + hard hat = a hat that is somewhat safe and very distracting. Earn some serious geek points with this one. posted by J_Hodgie on Feb 7, 2008 How to Make "Oven" Caramel Corn There are various ways to make caramel corn, but this method is easy and the results are addictively tasty! posted by MedMisfit on Feb 3, 2008 Under $30 Light Table How to build a light table for under $30 for all your light table-ing needs. posted by Dr.GraffitiBatman on Feb 3, 2008 Make an LED Blaster Don't drop loads of cash for an official laser blaster replica. Make your own with custom sound and lighting effects! posted by finkbuilt on Feb 2, 2008 Closes this weekend! Valentine's Day contest! Spread the knowledge! Paracord Bracelet with Monkey Fist Button Make a sturdy bracelet out of paracord and a funky bead. You'll learn a cool knot and can make variations for friends. posted by Tommi Potx on Feb 5, 2008 Decapitation Effect There comes a time in every filmmaker's life when he needs to lop off a head and let some blood spurt all over. Here's how to do it cheaply. posted by indymogul on Feb 3, 2007 Get the LED out: The Invisible Costume If you want your costume to have the element of surprise, use this trick to make designs on your skin pop out from nowhere. posted by kiteman on Feb 3, 2008 Windbelt Redux 21st Century Micro Power Generation Get power from cross ventilation in your house. posted by Tool Using Animal on Feb 5, 2008 10$ WiFi 16dBi Super Antenna With some simple parts and packaging material, you can give your WiFi a serious boost. posted by hanzablast on Feb 2, 2008 Show us your yarn! There's still time to enter pictures of your yarn projects in the Lion Brand Yarn Challenge!! Here are some more of the 315 projects already entered - check them out, talk to the crafters, and get inspired! Mouse Purses Kebaya Afghan Sweater   Now go make something awesome, and I'll see you next week! - Eric

Posted by fungus amungus 10 years ago