Feature request: mass-mail to subscribers

I have just realised how many people have subscribed to me (over 370!). Since they have taken a special interest in me, I feel I ought to be able to reward them somehow. I would like to be able to send a message to all my subscribers at once, giving them advance notice of ibles etc, to let them get first chance to comment or suggest improvements before I publish it to the general public. Update: the majority of replies seem to be in favour or neutral. (For instance, I currently have two projects awaiting publication that are complete enough for useful comments to be made, but not complete enough to publish properly.) Would you have liked the chance to comment on a project a few hours before everybody else? Or to be able to contribute to it before it is published? Or maybe you want to publish a project that is unavailable to the wider public because it does not meet the site's usual family-friendly standards? Or am I giving the concept of subscribers more significance than I ought?

Posted by Kiteman 9 years ago

Collections - a problem?

First off, this post is in no way targeted at any specific authors, and is just a piece of opinionated feedback. However, I will make reference to the data that I found about certain users. I love Instructables. Specifically, I love being able to browse the recent section, to see what fantastic ideas people have come up with and shared with the world. However, I hate being confronted by a wall of 'Collections' - it really does bug me! It is not new work - yes, it can make it convenient to look at recipes that all use tofu, or DIY quadrocopter plans to compare them, but it is not new content! I don't want to be offensive, but when you make 88 collections in under 2 weeks, it comes across like you're just begging/spamming for votes and don't have anything useful to add of your own design/ I propose a filter, that would allow you to remove collections from your viewing on 'Recent', to stop them clogging up the page if you so wish - not a policy change to stop collections from appearing, but an option to do so.  As a separate proposal, I suggest that the views for collections be disabled, to discourage spamming, and promote original content. I'd love some feedback from others, so please do chip in. If you want, you can PM me if you have the desire for a more private conversation. Cheers, S.

Posted by SanjayBeast 5 years ago

Can I measure everything?

Can something exist if has no mass or cannot be converted into mass? The mass of a photon is zero, yet how can a photon have energy but not have mass? If this is false, would that it be true that a box with and LED in it would have more mass when the LED is lit? But, are there other types of being aside from energy and mass? A concept perhaps. How would a concept be measured? The word apple is comprised of certain wavelengths that are detected by the human ear. In the human body as a system, the energy that my body requires to produce those wavelengths at "regular" amplitude (assuming there can be a standard amplitude) could be converted into mass. Would this allow me to measure the mass of the word apple in the system of my body? Right now I'm sure many of you are thinking that the word apple could be represented in many other ways such as writing. This is why I used the word 'system' when I referred to myself saying the word apple. Since there is no standard for the writing and speech of the word apple. Is everything comprised of something? Could that something be converted into mass? Can I measure anything?

Posted by astrozombies138 10 years ago

Mass Produced Ideas

My CNC machine is almost done and a vacuum form machine should be really easy to make (1 or 2 days). I've always wanted to mass produce something, so does anybody have any ideas for a cool electronics device that they would want to buy? I'm going to make everything surface mounted. If anybody has any really good ideas then PM or post here, maybe we can even reach a percentage agreement.

Posted by guyfrom7up 10 years ago

3d printing for the masses


Posted by royalestel 11 years ago

To All People In The Greater/Metro Vancouver Area

Let's do something... epic.....Sometime in the next 3 months (to be announced), I want to see everyone that looks at this topic to show up at a location in the Vancouver area (to be announced-yes, another thing), with as many throwies and floaties as you want to bring (preferably over 20, as we will release them onto the city sometime at night (t.b.a. - wow, this isn't very organized). If you're looking for parts, Active Tech (1st and Boundary in Vancouver) has the cheapest LEDs, in $15 100 packs. Batteries you can get from dollar stores. The point of this is to have a a little fun, and to annoy the horsemen.Let me know your ideas on a time and location.LN

Posted by lucidn 10 years ago

Terrestrial mass planet measured orbiting nearby red dwarf

From Science Magazine:A group of astronomers today announced the discovery of the least massive planet yet detected outside of our solar system. It is lightweight enough--between two and three times the mass of Earth--to almost certainly be rocky like Earth rather than a huge ball of gas. Although the planet orbits too close to its star to be habitable, a new analysis of one of its neighbors suggests a world with deep oceans.The observation of Gliese 581e, made with the usual radial-velocity residuals fit, is of a terrestrial-mass planet orbiting insanely close to a red dwarf star. Nevertheless, it marks a substantial improvement (a factor of three in mass) in the precision of the radial-velocity technique.Read the whole article (let me know if it's password protected) for details.Another news article (including a very nice diagram of the habitable zone as a function of the mass of Gliese 581) is available from Science News.

Posted by kelseymh 9 years ago

Winter weapons of snowy destruction

It's winter and snow is everywhere (well where I live there is) People are sledding and making snow angels. And of course my favorite part- Snowball fights. Snow in ball form whizzing thru the air towards people. Me loving to build stuff and loving to improve it to, I wanted to make something that could throw snowballs better than any person. I have an idea for a couple launchers and cannons but I want to see other people's ideas. So post anything, a launcher, a cannon, a catapult, a chucker. Anything that can accompany someone in a snowball fight. So people POST.

Posted by ostomesto 7 years ago

Cheap mass solar energy

I am going on a trip to mexico to build houses for poor families. I was wondering, is there any solution to lighting where our team could make multiple packages that we could give to the families that would supply them with light, etc. ?

Posted by Twistman 9 years ago

Vibrobots - a technical question

All vibrobots I have seen use an offset, rotating mass to induce vibration. I have access to a motor with a reciprocating output. Would it be best to set the mass vibrating front-to-back of the vibrobot, or up-and-down? Or at some angle between the two?

Posted by Kiteman 9 years ago

Rube Goldberg style machine powered by mass transit

This quirky machine is powered by escalators and elevators in a subway station and has a few creative movements. The message may be a little simplistic and quaint (take THAT, Mr. MAN!), but it's a fun video to watch. It's slow-paced so be sure to stick it out to see everything that happens. Untitled from mudlevel on Vimeovia Wooster Collective

Posted by fungus amungus 9 years ago

Who I can unclored plastic, colored in the mass

Hi all ! I want uncolored plastic, or uncolored latex, and I need to know how it's possible. For have light color, pastel color. Like nightblue => lightblue. It's used for cleaning old yellow plastic, like old white or grey computers or consoles, but it's maybe only for have the origin color, not for uncolored the color in the mass. It's yellow because the plastic is oxyded. With hydrogen peroxyde + UV. So, do you know if this combo is good for my project ? Or who I can make it ? It's for custom parts. With many friction, and it's bad to use paint for that. Hope yoou help me, see you soon. Thanks in advance.

Posted by Brolock 3 years ago

Need a hack for this site

I need to find a better way of organizing friends in categories, messaging them, The sight leaves much to be desired and wants to charge for things and way too much' www.bikerornot.com www.bikerornot.com/charleydavidson

Posted by Charley Davidson 8 years ago

mini batches of wine

Im gonna start making mini batches of wine to see what kinds im gonna mass produce.......is there a formula for sugar to yeast......im making them in pet bottles or cocacola bottles

Posted by rollingstoner357 10 years ago

Frogs Forever?

Here's a neat video of bullfrogs clumsily catching prey in gorgeous slow-mo from the Vancouver Aquarium. They point out that amphibians are potentially facing a mass extinction, due to wetland reduction and chemical contamination. (Check out the crazy gender-bending effects of herbicides!)

Posted by canida 10 years ago

What RSS Feeds Are You Subscribed To?

What RSS Feeds Are You Subscribed To? Also, what do you use to read them (your RSS reader)? Maybe make them links to the site with the feed too. I have about double the amount of these feeds but I'm only subscribed currently to these ones.My Subscribed RSS Feeds:[AlbinoBlacksheep AlbinoBlacksheep.com] - Flash animation/games site[DarkMotion.com Darkmotion] - Instructables user Darkmotion's blog. Sometimes I look at people Instructables pages and If I see they have a website, I usually visit it.[explosm.net Explosm] Daily webcomic and other stuff.[HomestarRunner.com HomestarRunner.com]Instructables - All published instructables.Instructables: News - The instructables blogInstructables: Comments - My comments backtalk feed.Instructables: Inbox - My private message inbox[labwithleo.com Lab with Leo Blogs] - Mass feed of everybody's blogs on the TV show "The Lab with Leo Laporte" on G4TechTV.[maxiumpc.com Maximum PC] - Mass feed of everything on MaximumPC.com, official site of the magazine.[smashbros.com Smash Bros. DOJO!! Latest News] - Mass feed of the official site for the upcoming Wii game, Super Smash Bros. Brawl. [weebls-stuff.com Weebl's Stuff] - Funny flash animation/game site.

Posted by Aeshir 11 years ago

Mini Weapons of Mass Destruction 2

Toy inventor John Austin released Mini Weapons of Mass Destruction 2 (Chicago Review Press) this past October. This awesome sequel to the Mini Weapons series includes over 30 new mini weapons with which to terrorize your office with. Here's an excerpt from the press release: "All the projects in Mini Weapons of Mass Destruction 2 are built from inexpensive, commonly kept items: binder clips, playing cards, rubber bands, markers, clothespins and discarded packaging materials. The projects - modeled after real-life gadgetry - range from "sidearms" and "weapons in disguise" to "villain mini weapons" and "surveillance and intel" and cost mere pennies to assemble. This easy-to-follow primer also features plans to construct periscopes, bionic ears, grappling hooks and code wheels. plus, each project includes a supply and tool list, italicized safety tips and step-by-step instructions supplemented by clearly marked, illustrative diagrams" I managed to get my hands on a copy and made the Grappling Hook Gun; the project was easy to follow and my project came together in under 30 minutes (including the time it took to snap a few pictures). My grappling hook went about 20 feet and I'm sure it could travel further with a few minor tweaks! So if you're reading this while sitting bored at your desk, take a look around you. If you're surrounded by un-used rubber bands, pen caps, and markers, perhaps it's time for you to assemble your own office supply arsenal! For Authors outside Canada, USA, UK and Australia The first 3 comments left here with a picture of your own version of an office supplies mini weapon of any type will receive a free copy of this book! All books have been claimed!

Posted by mikeasaurus 6 years ago

Cheap Power Conditioning Unit (PCU)

In the video released by the windbelt creator, he mentions that his PCU only costs about a quarter. I dont know if that is his mass produced price, or his off the shelf price, but does anyone have any ideas about how to make a PCU for say, under a buck?

Posted by fafnir665 10 years ago

Instructables in Trendwatching

Instructables was mentioned by Trendwatching in their September 2006 Status Skills article.Here's a quick selection of sites helping the masses acquire a bewildering array of skills:Instructables is a project by Squid Labs, who create a lot of stuff for business and pleasure, and have now documented their how-tos for all to see and use.More news articles about Instructables here.

Posted by ewilhelm 10 years ago

I want to bind together two pieces of hard candy

I need to get 2 semi-circle shape hard candy pieces and bind them together. Is a molten sugar glue gun work for this? Is it fairly sage to use? Safe to consume? I need to do this for mass scale... Not at the beginning though....

Posted by ReneL22 2 years ago

Would anyone want a Portable Nes that they dont have to build?

Hello i am currently undergoing a project to mass produce nes handhelds but before i start making them i will need to know who wants to buy one and what kind they want. for further information email me at Minitendo.david@gmail.com or go to Minitendo.weebly.com Thank you 

Posted by Portendo.David 6 years ago

Updated: I Need Math Help: How do I find the info needed and what formula do I use to figure this fluid physics and astronomy question with?

  Finally, I have been given the source of the "info" the fellow talking to me, was drawing from:  It can be found here:   Hydroplate 'theory' Ok, here is my problem.   I have been presented with, what at first sounds like a totally ludicrous concept, but in order to prove or disprove it, I need to have some math backing that I don't have in my head (nor in my experience). I need the approximate mass of the asteroids in the belt.   And also I need the distance to the belt.   I will also need to figure how much pressure it would take to force a  column of water skyward at escape velocity, equal to that mass.  And if there is a way to give a simple explanation for the math, that would be apreciated also :-) ?

Posted by Goodhart 8 years ago

Where can I buy myself a steel drum

I'm looking for a steel barrel/drum thing for a project I plan on doing. It's basically a pool heater, using an old car radiator and steel drum. But anyways... I have no idea where I can find one, where carries them or anything of the sort. I'm in central mass if that helps.

Posted by cvxdes 10 years ago

Vista to XP upgrade help

I Started this group a while ago and never posted a topic... so I figured I'd do it now with the mass intrest in upgrading to XP. Post any questions you have about switching from Vista to XP here and I will do my best to help you out... and I'm sure several other computer savvy Instructites will as well.

Posted by chaoscampbell 10 years ago

DIY 3d printer ideas

In every "diy 3d printer" page i've seen, the XYZ axi are controlled by servos. What i don't have in my garage are servos, but i do have a mass of actuators. Would it be acceptable to use actuators to controll XYZ? I see no problem with it but if you readers do please comment below and possibly add a resonable solution to go with it. Thank you :)

Posted by Dr.Tech 5 years ago

WickedLasers Unleashes 1w Blue Laser Upon the Masses, or All Your Lightsaber Dreams Have Been Fulfilled

The good folks at Wicked Lasers unveiled their latest handheld high power laser: the Spider III Pro Arctic packs a blistering 445nm, blue, 1W beam that can SET YOU ON FIYAH for a mere $197.97. Wait wasn't the last one like 2 grand? Yup. Go check it out yourself, the website is loading slowly, presumably trampled under cyber foot as loads of people go to drool and purchase theirs. I'll wait. ... Yeah, it is real. Yeah, I want one too. Lasting 2 hours on a single charge, and sporting a scifilicous anodized aircraft aluminum body, this beauty packs quite a punch, apparently it is capable of setting bare flesh on fire almost instantly. Ouch. Now I REALLY want one. Who needs a gun when the tactical laser will make any offender scream and run away?

Posted by KentsOkay 8 years ago

Other than Obvious Uses for an Old Oster Hand Massager

It seems to me that there should be some other than obvious uses for an old Oster Hand Massager like they used to use in barber shops and gyms. Could one be attached to a glove to allow for some detailed hand sanding, or perhaps for shaking moder paint bottles, or to hold a chisel for wood carving? Seems like there is some potential somewhere...

Posted by Panamaboob 6 years ago

Netting circle - The crafting and DIY crazes are catching on with websites such as Etsy and Instructables

Instructables and Etsy appear in the OttawaSun article Netting Circle.If you're into creating, but you're not into domestic arts, try Instructables.com. This subversive site bills itself as "the world's biggest show and tell." Anyone can contribute how-tos and get feedback.The postings are slightly unusual, sometimes even extreme, such as how to build a cheap still to make moonshine, turn a shotgun shell into a USB stick case or make shoelaces from tape.The projects for extreme DIYers are uploaded by users who offer step-by-step guidelines along with photos. "It's a reaction against a mass-produced culture," says founder Eric Wilhelm in the Telegraph.Sounds quite similar to the 18th and 19th century backlash against the advent of mass production which created the arts and crafts movement in the first place.Wilhelm started an earlier version of the site several years ago while a starving student seeking advice on how to make equipment to cheaply support his kite-surfing hobby. More news and press about Instructables here.

Posted by ewilhelm 9 years ago

mission of sputnik 1

Russian technology satellite. One launch, 1957.10.04. Tikhonravov's 1.4 metric ton ISZ satellite was to have been launched by the new R-7 ICBM as the Soviet Union's first satellite, during the International Geophysical Year.    But it was not ready in time, so Korolev hurriedly developed Sputnik 1 as a replacement. It became the first artificial satellite of the earth. Sputnik 1 had 1 watt of power, producing an 0.4 second duration signal on the 7 and 15 m bands. Four antennae were deployed at 35 degree angles. Power was provided by three silver-zinc batteries. Thermo-regulation was by a ventilator. The 580 mm sphere had a mass of 83 kg and was made of highly polished Aluminum AMG6T alloy 2 mm thick. It was built without drawings due to the quick time schedule. Korolev was everywhere, supervising all aspects of its construction. It functioned for 21 days.      AKA: PS-1. Gross mass: 84 kg (185 lb). First date: 1957-10-04. Number: 1 .     the word sputnik is russian word for traveller

Posted by Waren-Neutron 7 years ago

Private Publishing and Messaging - feature idea.

A repeated thought about publishing private projects, and PMing in general:It would be good to be able to mass mail a link to a private project, especially "to everybody I subscribe to" and "to everybody who subscribes to me".Is such a thing technically possible?If it is possible, is it likely? I feel it would make an excellent inducement to turn pro ("features not content").(I know this has been mentioned elsewhere, but I don't recall seeing a response.)

Posted by Kiteman 9 years ago

Finding googols without a search engine!

It is not often that you encounter a googol as a "measured" (or inferred) quantity referring to something physical. A preprint out today on arXiv:astro-ph presents a calculation of the total entropy of the observable Universe (in units of Boltzmann's constant, k), coming up with a result Sobs = 3 × 10104 k. The dominant contribution is from supermassive galactic black holes, for which the entropy is proportional to their surface area, which in turn scales like the mass squared.

Posted by kelseymh 8 years ago

We are "the dark matter of innovation"

That's what MIT's Eric von Hippel calls communities like this one. What the hell am I talking about? Check out this article. NY Times Article "How to Improve It? Ask Those Who Use It"So with the ol' Intertubes, more ideas can bubble up from the unwashed masses. I think it's freakin' great. I'd love to see a whole Diamond Age of quality knowledge culled from all areas. So what say you?

Posted by fungus amungus 11 years ago

Flagging suggestion

We've all seen 'em--spam postings. And they turn up en masse, 5, 6 or more together. While this may sound lazy, can we reduce the number of clicks it takes to flag an offender? It current takes four mouse clicks per post. --click Flag --click Spam --click OK in dialog box --one last click to dismiss the note informing me I have just flagged someone (I was already aware of that). Maybe flagging shouldn't be too easy, but the process is tedious for multiple spam posts...

Posted by gmoon 6 years ago

balancing windmill blades

A 5 blade rotor. making our own replacement blades a fair bit o' resestance to rotation from the generator, therefore, balancing it on the generator shaft is probably a no=go. the owner, for whom i'm doing the work suggests balancing 2 blades against one another.   But there are 5!  not 2 or 4.   maybe we make it a 4 blade... maybe we make sure each blade is excactly the same weight AND with CG at the same distance from center (sounds cumbersoe to get both mass And cg identical. suggestions?

Posted by Toga_Dan 4 years ago

World's most efficient solar dish? - MIT

A team led by Massachusetts Institute of Technology students last week successfully tested a prototype of what it says may be the "most cost-efficient solar-power system in the world," revolutionizing global energy production.The 12-foot-wide dish, made of a lightweight frame of thin aluminum tubing and mirror strips, concentrates sunlight by a factor of 1,000, according to the Cambridge, Mass., university. It can create heat intense enough to melt a bar of steel. More from ZDNet

Posted by Goodhart 10 years ago

The Inverted Map

This map reimagines the Earth with the idea that the oceans are the land masses and the continents are the oceans. It's interesting to see a world map where everything is connected and it would be possible to walk the entire circumference. It reminds us that what is "normal" comes from our own personal experiences.Whether the map is a Mercator map, a Peters map, or a map of something besides the Earth, that map can have a huge effect on how you perceive it. Just like statistics, maps can be deceiving so make sure you're questioning the sources and get the best information you can. link

Posted by fungus amungus 10 years ago

Arduino project engenniring.

Hello my friends my name Mohamedi need sime help to my arduino project.itcontains an arduino,keypad and lcd.its about IMC(indice de masse corporelle)to input the weeight then height and mesure the IMC.which IMC=weight/height*height.actually everything was fine.i can input nulbers with the keyoad for the height and weight but when i d like to see the result i mean imc value it showd on the lcd ilc=-1.00 its like don t use the value what i put with keyoaf.plz i need help and i will send u later my arduino code that i made it by myself.thank u friends .

Posted by VladimirO10 2 years ago

Melted plastic lamp

Hello. I found this hanging lamp at a garage sale, had to have it... Cannot find any information on this style. Looks homemade, melted plastic strips. Does anyone have any information you could share with me? How it was made? Maybe when making things like this was popular? Was it possibly mass produced? They kind of look like Fruit RollUps....Anything at all would help. Thank you. https://www.facebook.com/photo.php?fbid=601755359858795&set;=pcb.601760483191616&type;=1&theater; https://www.facebook.com/photo.php?fbid=601755389858792&set;=pcb.601760483191616&type;=1&theater; Couldn't upload photos with the uploader.

Posted by Darjega 5 years ago

Old cardboard box wins major "green" prize.

Want to get credit for an idea that is older than you are?Simple - give it a cool name and tie the idea in with trendy green terminology.A cheap solar cooker has won first prize in a contest for green ideas.The Kyoto Box is made from cardboard and can be used for sterilising water or boiling or baking food. It's just a basic solar cooker - cardboard, black paint and aluminium foil - but discussing it in terms of sustainability and carbon credits makes it worth 75,000GBP and potential mass-marketing contracts.(Cynical? Me?)(Story)

Posted by Kiteman 9 years ago


No, not the mythTV variety, but the real deal. I've been messing with uCLinux on various chip, which led to a vague daydream that I sketched out on the train today. These are my notes on a personal DVR. I say personal because its design for MY needs, and not the typical user. It also happens that no commercial DVR will meet these specs without being mired in lawsuits (see replayTV). Why an embedded solution and not MythTV? I've had mythtv boxes, they can be a lot of fun, and a lot of frustration. Mostly, I don't have room for a second computer, I don't want to use a ton of energy to record a few programs, and no matter where it ends up in my apartment, I will be able to hear it at night. MyDVR: I already watch all my TV on the computer. Either by TV tuner or Xvid. I don't need a Tivo style DVR that will play back content on a TV with a nice menu display. I need a mass storage device that records TV shows. I want Xvid. MPEG2 is huge. Its also kinda ugly. I really really like the look of the XVID codec. It takes a reasonable amount of space for a decent encode (~178 meg per ~20 minutes HDTV). I want multiple tuners...I mean, what if there are two (or five) programs to record simultaneously? Basic design: A motherboard with 32 bit CPU running uClinux (probably a chip from Freescale). These usually have USB and an ethernet MAC (but no PHY). USB 2.0 mass storage device emulation on the USB port. This way the unit can be hooked up to a PC for easy video extraction. This might also have some configuration abilities, but that would require a custom mass storage controller driver - YUCK! Ethernet with HTTP server for show scheduling. IDE interface to a big hard drive. The tuners and encoders would be on add-in cards. The add-in cards would have: 1. A tv tuner. 2. A DSP with xvid encoding. 3. Probably a small uC to control the DSP and tuner. Whats already in my knowledge domain (stuff that I already know about -or- could I really do it?): 1. I've been messing with uClinux for a while. What fun. 2. USB mass storage controller implementations are numerous. check. 3. Embedded HTTP server - check. But I have not routed a PCB using an external PHY. This looks messy. Perhaps a ENC28J60 instead? 4. I've been reading up on some XVID DSP implementations. There are also some commercial MP4 chips, but I bet they're pricey! 5. I picked up a bare PAL tuner at the surplus shop. Time to play. There are a few things that make this project easier than a Tivo clone. There is no video output. No need to do fancy display overlays synced to the incoming/decoding video stream. This is encode only - no need to load, decode, and display the XVID. I'm kinda testing the waters on this project. I'm going to get some DSPs and try to do real-time XVID compression. Also, I need to figure out the tuner card. Any suggestions within the scope of this project would be awesome! Especially if you've worked with uClinux and have a processor recommendation.

Posted by ian 11 years ago

Mass rapes and machete murders in 2008

Kenyan tribal warfare:I'm not sure if this is a topic, that everyone would like to be shoved in their face like this.. So please let it die if your don't want to hear about it..but with that said...WHAT THE &%#!!??!!!!?!!!!!!!I would generally refer to myself as a non-beliver in christianity. But for the first time in my life, I sought help from God for these poor people caught in the middle of this.Within 15 minutes of the election results being released the unrest had already begun...I'm not sure how many of you have been following this, but whats going on is VERY DISTURBING. I have just viewed several people being chased and murdered buy groups of tribal members.... Women are being taken and gang raped... This is not one or two people being killed and raped here it's many more.If something like this is not worth stepping in and controlling, then what is??Australia has participated in civil unrest issues before with success and has shown so in East Timor..Would it not be a good idea to stop this now, before more deaths and raping's occur?...And yes I am more than aware, of the logistics of launching a multinational strategical force into a under developed country such as Kenya. Yet I also believe something needs to be done...What do you all think of the situation??I'm feeling physically ill at the moment, I don't know if i'm going to be able to sleep tonight.... I just keep seeing the guy running and getting cut till he falls and they get him.... Truley sickening....

Posted by Lftndbt 10 years ago

Diode Calculator will not work

I've been working on a diode only (well, plus switches for input [numbers, yet there's only one pad! not one for each digit], resistors for various things, and LEDs for the display) calculator that could add two two digit numbers (xx+xx=xxx) for a while, putting countless hours into it.I have deemed it impossible.There's so many problems with a mass diode resistor network that is just won't work. As some and gates conduct then some other gate (like it's suppose to) conducts, and eventually causes a voltage divder (with the pull up/ pull down resistors) and the output gets wacky and there's no wway of amplifying the signal.The diode adder is dead

Posted by guyfrom7up 10 years ago

Product Designers & Engineers UK

Hi everyone! I’ve got a project underway and I’m at the stage of looking for product designers and engineers based in the UK, preferably in the South East. I’ve posted in the “Wanted” section of the forums as this wouldn’t initially be paid, more of a collaboration to start, with the goal of turning it into a realistic product/business. Looking for people who have an understanding of (what I believe would be) advanced PCB design, setting up basic SoCs, with a view for mass production. If anyone has any advice on where to find people with these skills, or knows anyone who would be interested, any help would be greatly appreciated! Kind regards, Mike

Posted by Everlong 3 years ago

Cheap Island Building possibilities

Hello! Ive been doing all kinds of research and planning on making man-made islands for a few years now, and I had a thought on one method inspired by Thinkenstein's Instructable on Trash Rocks. He has been able to make floating rocks using plastic bottles filled with air, nylon fishnet bags, and covering the combination in cement. Tadaa, Floating Rocks. But after seeing his instructable about this, would anyone think it to be possible to make a large floating land mass using plastic bottles of 16oz and above, nylon fishnet bags, and cement? I think it sounds doable, but that's just whats been put on paper.

Posted by EngineerJakit 6 years ago


I found that using a orange connector with a white rod on each end makes a very accurate bullet because of how well balanced it is and the type of spin it has when going through the air. This bullet also has a good amount of mass to do damage to what it hits but it is also small so that you can carry more. My only problem with it is that it falls out of the barrel when shooting down at some thing because it doesn't fit all the way in the barrel. If you find something more accurate that still has the same knockdown force that I like then pleas tell me. P.S. I don't want to know about the sniper bullet that someone made because I already know about it.

Posted by Pat Sowers 11 years ago


I found that using a orange connector with a white rod on each end makes a very accurate bullet because of how well balanced it is and the type of spin it has when going through the air. This bullet also has a good amount of mass to do damage to what it hits but it is also small so that you can carry more. My only problem with it is that it falls out of the barrel when shooting down at some thing because it doesn't fit all the way in the barrel. If you find something more accurate that still has the same knockdown force that I like then pleas tell me. P.S. I don't want to know about the sniper bullet that someone made because I already know about it.

Posted by Pat Sowers 11 years ago

Floating Garbage Island Twice the Size of Texas Aimlessly Spins in Pacific Ocean

The largest dump in the world isn't outside New York or London or Shanghai but in a desolate stretch of the Pacific Ocean nearly a thousand miles from the nearest island. Held together by a slowly rotating system of currents northeast of Hawaii, the Eastern Garbage Patch is more than just a few floating plastic bottles washed out to sea; the Patch is a giant mass of trash-laden water nearly double the size of Texas.Full Article:Plague of Plastic Chokes the Seas in the LA TimesQuick Blurb:Oceans of Garbage on Vestal Design

Posted by noahw 10 years ago

Gravity Lamp, the LED lamp powered by gravity

A Virginia Tech student designed an LED lamp that is powered by gravity. It is called the Gravia, and it took second place at the Greener Gadgets competition in NYC. Gravity as a renewable energy source? Amazing!From http://pesn.com/2008/02/19/9500471_Gravity_Lamp/Concept illustrations of Gravia depict an acrylic column a little over four feet high. The entire column glows when activated. The electricity is generated by the slow fall of a mass that spins a rotor. The resulting energy powers 10 high-output LEDs that fire into the acrylic lens, creating a diffuse light. The operation is silent and the housing is elegant and cord free – completely independent of electrical infrastructure.The light output will be 600-800 lumens – roughly equal to a 40 watt incandescent bulb. Each drop of the gravity mechanism runs the light over a period of four hours.To "turn on" the lamp, the user moves weights from the bottom to the top of the lamp. An hour-glass like mechanism is turned over and the weights are placed in the mass sled near the top of the lamp. The sled begins its gently glide back down and, within a few seconds, the LEDs come on and light the lamp, Moulton said. “It’s more complicated than flipping a switch but can be an acceptable, even enjoyable routine, like winding a beautiful clock or making good coffee,” he said.Moulton estimates that Gravia’s mechanisms will last more than 200 years, if used eight hours a day, 365 days a year.The winner of the Greener Gadgets competition was the Enerjar.

Posted by Brennn10 10 years ago

A sweet Idea for a movie!

Ok, This Idea is either really cool or the dumbest one Ive had yet! What if They made a movie about aliens coming to destroy earth by infecting us with an alien virus that makes us turn into zombies, so the Worlds military makes Super advanced robots to fight them! and because all of the military personnel are fighting aliens The world erupts in mass anarchy and pirates start to sail the sea and attack coastal cities! So chivalrous ninja protect the people from the prates and aliens. But then the Anti-virus the Drug companies makes to stop the virus in the infected mutates and causes certain people to turn into vampires! I think it would be cool but it might also be a bit much! :)

Posted by Bisquick the ninja 10 years ago

Best of both worlds (LED technology)

People working under Professor John Rogers of the University of Illinois at Urbana-Champaign have managed to combine the robustness of inorganic LEDs (the kind we use so much here), with the physical flexibility of organic LEDs.They have devised a new mass-production method that allows large numbers of small LEDs to be picked up by a robotic arm and embedded into a wide variety of other surfaces, including glass and rubber.The LEDs are bright enough that they can be spread out far enough to be transparent, paving the way for displays built into windows.This is not new science, just new engineering. What would you do with it?BBC storyUniversity of IllinoisThe BBC picked the story up from Science magazine.

Posted by Kiteman 8 years ago