reverse connected guitar pickups make strings resonate - how to make it stronger?

Hey all ,  im having a problem ,  i connected some guitar pickups to send frequencys instead of receiving , when close to a certain section of a piano , it makes the strings resonate , and i can play music thru the strings (i even get voice timbres) now , my problem is like that - the vibrations are extremely soft ,and i need to somehow make them stronger ,  i think one of the ways would be to magnetify the strings , but i would really like to know if there is a way to strengthen the pickup signal without blowing anything up , anyone has an idea? i think it has to do with electro-magnet power , so amplifing it should work , but adding a 5 watt small amp didn't make any diference...

Posted by dogme 7 years ago


Projects for a broken Acoustic-electic

Took my ephiphone EJ to show at a party awhile ago. Drunk folks (with steel toed boots, apparently) were messing with it I guess and someone knocked it on the floor and put their foot through it. i took it to my local guitar store and they told me the repairs would probably cost more than the guitar and it would sound terrible anyway. the bracers inside are cracked and completely broken off in some places. so i'm probably going to dismember it for parts. any ideas for projects? theres a little preamp, plus a saddle and a neck pickup inside. ideally i would like to use the pickups to electrify my other acoustic, but it's sort of nice so i don't really want to go putting holes in it .maybe a soundhole pickup? i don't know a lot about pickups. i'm open to other ideas, too. just so long as the pieces of her corpse go to good use. she would've wanted it that way.

Posted by francisambulance 6 years ago


How to wire a guitar pickup to instrument cable/ rheostat?

I have been wanting an acoustic pickup but don't really want to buy one. I had an old tele neck pickup with a white and red wire and an instrument cable that has one jack taken off and the ground and hot contact exposed. I tried different configurations of the red and white wires to the hot and ground of the instrument cable but all it did was stop buzzing and no sound came out. I think I might need a volume and i have a leftover rheostat but I'm not sure how to wire it, If I could avoid wiring a volume completely and just go from pickup to cable that would be great but I'm not sure how. Help please??

Posted by beardedknome 5 years ago


Dirt Cheap Acoustic Guitar Pickup

Hi I am concerned about the health and safety aspects of the instructable of "Dirt Cheap Acoustic Guitar Pickup by Xuthal". The project encourages people to take apart a smoke detector to obtain a piezo sounder. However no warning at all is given by the author that there may be radioactive material in the device, or how to recognise it and how to deal with it. I tried to post a warning on the article but for some reason it hasn't worked. I could not see how to flag up the item so I am posting here. Whilst the manufacturers of smoke alarms play down the dangers of Americium 241 dioxide (the radioactive material), they would most certainly not condone opening up a smoke detector sensor. Am O2 will most likely pass straight through the gut due to its insolubility, so your readers are probably safe from ingesting it. However, if the source is fractured into dust particles, it could be inhaled and will lodge in the lung for a long time. Being an alpha emitter the Am241 will very likely end up causing a lung cancer. I think this instructable is highly irresponsible and should be removed. In any case the item taken from the smoke detector, a piezo transducer, is readily available from any hobby electronics supplier and costs less than the battery to power the detector in the first place!

Posted by TCSC47 3 years ago


DIY Plug-In Hybrid Pickup Truck

Hi everyone, For a while, I've had this as my "back-burner" project. I'm trying to really get going on it now. It's an Open Source, DIY, Plug-in Diesel/Electric Hybrid Pickup truck. That's really a mouthful, so I'm just calling it the "SuperTruck" project, until I can come up with a better name. The entire concept is that it is a parallel hybrid, which you can charge from the wall, and it has a diesel engine that can run on diesel, bio-diesel, and possibly veggie oil. Either the engine OR forklift motor will be able to propel the vehicle. (Meaning that it will have a dedicated EV mode.) The driver can manually decide to run it on diesel, electric, or both depending on the driving situation. The mechanicals are relatively simple. It uses a manual transmission (rather than a CVT or planetary gearing.) In theory, this will be a project than any advanced grease monkey will be able to duplicate. I'm not much of a car guy, but I have learned quite a bit working on my electric motorcycle, electric car, and experimenting with running my car as a hybrid. Here's a YouTube playlist of what I've got going so far. For the latest on this project, please visit the page for it on my blog: http://300mpg.org/projects/supertruck/ I'll definately need help on this project, so please tell all your friends about it!

Posted by bennelson 5 years ago


Schematics/Instructions for guitar pickup Sustainer?

I saw some pickups  for sale, sustainers, I thought "oh thats cool" but they are way above my budget. Besides that I love the sound of my current pickups. What I want to know is how to make a sustainer  with on/ off switch for my 3 coil single coil strat. It would be neat to have on/off but I could do without and just make one pickup sustaining. Any tips schematics links, etc, are very welcome.

Posted by beardedknome 7 years ago


Knex Pickup Truck With Suspension

My TNKIT entry. Video - http://s562.photobucket.com/albums/ss69/Atlas999/?action=view&current;=MVI_3819.flv

Posted by GrandeSwag 9 years ago


Upgrading my guitar

I have a super nice looking Aria STG 006, crappy pickups, but nice wood and neck. I have some ideas, and i want you all to respond to my ideas New Pickups--Mighty Mite Pickups Killswitch---Buckhead, need i say more? Make some sort of nice interesting pieces of art on it. New Potentiometers Shielding all the insides (i get hummmmm which i hate with a passion) Any suggestions?>!??!??!?!?!!

Posted by mondaymonkey 10 years ago


LED Guitar Pickups???

Hey guys,I'm interested in putting LED lights in my guitars pickups. I've seen a few people do this on the net and gives a brilliant effect.I know to put this all together on the guitar, the only problem i have is making a circuit for the LED's. I know there are instructables on how to wire LED's but none show any circuit with a switch.I have all the equipment needed for this, eg. LED's, resisitor, 9V battery, toggle switch, wire etc.So basically i'm asking whether someone would be kind enough to show me how to wire 2 series circuits which both consist of 4 LED's which connect back to a switch and a standard 9V battery connector.And if possible, close up pictures would be very helpful.For an idea of what i am on about here is a video of someone who has already done it, but i didn't find his instructions helpful at all.Any help would be much appreciated.Thanks Dan

Posted by Dantallica 9 years ago


Building a synth guitar

Does anybody know if it is possible to take some components out of a keyboard, link it up to the pickups of a guitar and make a synthaxe out of it?

Posted by AerofoilAAAA 9 years ago


Winding Method For Guitar Pickups?

I just finished putting together a Savonius wind turbine:https://www.instructables.com/id/ERTAINQF18DW99A/One of the things I really want to work on for the next version is improving the inductance of the coils. Someone told me today that there's a whole community of musicians focussed on wiring their own guitar pickups. He said they do cool stuff with modified sewing machines and the like.Has anyone run across people or projects like this? Do you have you own favorite methods for quickly and effectively making copper coils? I'm thinking something in the 36 gauge thickness with several hundred wraps. So far, I've managed to do okay with 28 gauge wound up in aluminum bobbins by a variable speed drill, but I know there's got to be a better way.

Posted by mikejedw 11 years ago


Killswitch on a bass

I've been considering equipping a killswitch to my bass guitar. Think it would be worth it? And could it simply be installed by hooking a button switch to the pickup wires?

Posted by wingman246 10 years ago


Silhouette from photo

How to make a silhouette from a photo on my iPad  I want a silhouette of our 50 Chevy Pickup to weld on to our rod iron fence thank you

Posted by HowardSue 4 years ago


Selling over 30 pounds of K'NEX

Asking $200. Pics: http://s1365.photobucket.com/user/MrMagoffin/library/KNEX For pickup in Northern Virginia or shipped at additional cost. The roller coaster tubing has been cut into sections of varying length.

Posted by gamingman 5 years ago


help to remember what im doing

The pic says it all lol. i can remember for the life of me where i am to solder the bass pickups to and where the out put goes to lol. ANY HELP PLEASE *begs on floor kissing feet*

Posted by joypad 5 years ago


Mini lcd's

I'm trying to find a mini lcd to use to display information. Sorta like the G15 has but in color. I was looking for lcds on ebay but could only find mini tv's that were expensive or computer monitors that go down to 13 inch. Does anybody know were I can pickup a small lcd around 4-5 inches maybe.

Posted by CowGuy 11 years ago


True collaboration

I had a crazy idea - a few people will each build a component of an electric bass guitar from scratch, and post an instructable of it. Then, once they have built it, they will send it to instructables hq, where an instructables team member will assemble it. These components are: 1. body - I am volunteering to construct a body out of plastic 2. bass pickups + electronics 3. Neck 4. steinberger style tuning system

Posted by sugg22 10 years ago


Rigging a timer to a motor - Need Help

I'm making a pickup winder, which is simply a high rpm motor attached to a pot and a switch, but I want to attach a timer to it so that the motor stops when the time reaches zero.  If it helps out at all, the timer I'm using is a Radio Shack timer, catalogue number 63- 248.  If any of you folks could help me out at all with this project, I would be eternally grateful.  

Posted by CBecker 8 years ago


Question on attaching the round to the square.....

I need to attach a tube (it is fairly rigid, like a bic pen body), to a box (coming out of the smaller end of the box) and it needs to be fairly secure as there will be wires running through it and a "pickup coil" attached to the end of the device. The box may be plastic, or it may be metal, I haven't decided yet. I had thought about threading the barrel of the tube and just using two nuts to lock it in. Any other ideas would be greatly appreciated.

Posted by Goodhart 10 years ago


Physics question has me stumped

A large crate sits on a pickup truck which has coefficients of friction mu(s) =0.6 and mu(k) =0.4 . My question is how do I calculate the impact velocity if the truck accelerates (-8.0 m/s^2) and the crate slides forward 1.5 m to impact the back of the truck? Can anyone please walk me through this problem whenever you get the chance? Thank you. 

Posted by GThreep 3 years ago


DIY Projector and Almost complete Multimedia Desktop computer

> For Sale or Trade<=The descriptions for the ads are in the craigslist ads provided. Everything that I'm selling is in great shape, no scratches, etc. I can answer any questions you have and I am more than willing to negotiate.I would prefer pickup but if you want me to ship I want to get exact shipping/packing prices so it may take time.

Posted by Starstryke25 9 years ago


Bicycle Names

I name my bikes, usually for something wrong with them. Rusty, well, obvious. Lefty, it pulls to the left. Tiny, well, it's tiny. Some have more thoughtful names, like Phoenix, a bike I found in a ditch that was apparently thrown from a moving pickup. The fourth definition of the word Phoenix at this dictionary is a person or thing that has become renewed or restored after suffering calamity or apparent annihilation. Do you name your bikes?

Posted by extremegtafan 9 years ago


Without paint - Protect Steel from Weather + Rust

Sometimes I'd like to protect steel from moisture without paint.  Partly this is a practical matter. Figure I'll weld somethin else on sooner or later, and would rather not deal with burning paint. Partly it's an aesthetic. Not long ago, saw a 50s pickup that someone was in process of restorin.  Just gorgeous while it was stripped of all paint. So... Linseed oil?  Wax? Or option C thru Z?

Posted by Toga_Dan 4 years ago


Publishing unbuilt designs

I've got a project that I've been designing in SketchUp (a camper platform for attaching a full size tent to a small pickup truck) that I will definitely post on Instructables when, and if, I build it. The thing is, I've never built something like this before and I would really like to have opinions on the design before I start cutting wood. What is general consensus on publishing unbuilt designs? It's not really a collaboration, although that might be a good model for what I'm doing, it's just an incomplete project that I would like to solicit comments on before construction.

Posted by CMPalmer 11 years ago


Music box concept + Guitar guts = Player Guitar

Don't know if this specifically needs to go in music but, whatever. for christmas i made my brother a (somewhat poorly constructed) lap steel guitar. seriously, it wasn't that good, but it worked and it was more of a "can i do this project" kind of thing, plus he has a friend who is an ACTUAL luthier so he's going to "redo it".... anywho, i made said guitar using zither pins for the tuning pegs and it got me to thinking. with the zither pins you could theoretcially have a guitar string of any length and use the pin to set that string to any given tone on any particular scale (say the functional length of the string was only 3 inches....you could still theoretically set the tune on that string to a semi permanent desired tone). so, with a bunch of short lengths of various guage strings you could create a guitar music box (probably more of a music barrel but, whatever). now, normal music box has the tone pins (not sure what they're called...but the tuned slivers of metal) stationary along one (or more) fixed planes and a revolving "picking" drum that strikes each pin to make the tone in the order that it needs to be in a piece of music. for whatever reason. so, combine these two ideas and you get a player guitar, or a guitar based music box, whatever. so, obviously this could be acoustic or electric. my personal preference is to lean towards electric, so that's where the question comes in. a normal guitar pickup has 4, 6, or whatever magnets fixed within it's coils so that you can pickup the signal from 4, 6, or whatever strings that are strung paralell(ish) across the guitar. for the music box concept to work (as opposed to a true player guitar that plays across the strings) the individual string pieces (that are all individually tuned etc) wouldn't be able to be parallell to each other like a normal guitar. they'd either be in line on the same plane or spaced out in odd ways (i've got an odd concept for the actual construction...where the strings do the moving and the "strummers" stay put). so, does a single magnet pickup exist? that could just be wired up into the rest of a normal electric guitar's circuitry? or would i have to build such a thing from scratch (and subsequently how would i do that)? would a normal electric guitar's circuitry be able to work the same with more than 6 pickups in play (thinking of a cheap one from a pawn shop...that's what i built the slide guitar from)? also, taking song suggestions and subsequent individual string tuning plans *i do know that there are "better" ways to make a self playing guitar that uses the normal guitar form factor and robotics and such....but this seems more fun. plus, i might make it into a wind powerd thing...electric guitar windchimes anyone?

Posted by crapflinger 7 years ago


How to replace mini microphone with more sensitive mic?

Hi I am trying to replace mini microphone (is very similar to mobile phone microphone) of Audio bug with more sensitive Standard electret microphone with intention that it pickup sound from more than 1 metre distance, and in doing so I am getting too much noise in Audio bug out-put. Do I need pre-amp? Is there any better way to do it? If pre-amp then how to harmonise out put of pre-amp to the input of audio bug? Any help..... Thank you.

Posted by ksaus 7 years ago


Removing Humbucker Covers

I have an ebony Epiphone Les Paul that's a couple of years old and I'm considering taking the pickup covers of of the humbuckers just so it looks different from all of the stock Les Pauls. How would I do that? I recently built my own electric guitar and I'm still in that mode where I want to customize my instruments. So far my Les Paul is completely stock. Also, if anyone else has any ideas of things I can do to customize it, I'm open to ideas. Thanks!

Posted by saxman42 10 years ago


Stirling Engine

I have a 4.3l v6 that came out of a s-10 pickup.  I was wondering if i could make it run on the stirling cycle? It is a 90 degree v6 so it should work, This is the only site i could think of to post this question on. I was thinking i would isolate the waterjackets to the right and left bank of cylinders then heat one side and cool the other. I am good with engines and am skilled in the garage. I'm just tinkering. Maybe run a generator with it if it runs. I have a welder, plasma cutter, ect and can use them. Just kinda throwin it out there...

Posted by qparker 8 years ago


How to replace mini microphone with more sensitive mic?

Hi I am trying to replace mini microphone (is very similar to mobile phone microphone) of Audio bug with more sensitive Standard electret microphone with intention that it pickup sound from more than 1 metre distance, and in doing so I am getting too much noise in Audio bug out-put. Do I need pre-amp? Is there any better way to do it? If pre-amp then how to harmonise out put of pre-amp to the input of audio bug? Any help..... Thank you.

Posted by ksaus 7 years ago


Australian &quot;Throw Out Week&quot; FREE Electronics a plenty!! Some suggestions please.

Here in Sydney Australia we are having our 6 monthly "throw out week". This is a kerbside pickup of hard rubbish. They often include electronics and the like. Tonight I plan on going out to "collect" some useful items. Just picked this little item up on a walk home, in case with a new set of batteries inside. Last clean up I found a brand new digital camera working in box with all accessories... Can anyone think of something to make with it? I plan on posting more objects tonight.

Posted by Lftndbt 9 years ago


I volunteer to gather eyewitness info on water into hydrogen.

I'm a beginning engineering student and my dad is also an engineer. He is pretty skeptical and he recently told me of someone he knows who is using electrolysis to get better gas mileage in a Toyota pickup. I'm not sure, but it seems he is using secondary voltage to power the split and then burning it. He claims 60 mpg. If you guys would like to give me a series of questions/tests, I would love to go to my hometown and ask/perform them, then report back. Any takers?

Posted by bowakowa 11 years ago


Milk Crates - not as green as you think

I know milk crates are a really sturdy container and popular for a lot of "green" projects. The problem is that they're stolen.  They belong to the dairy whose name is printed on the sides.  Dairies reuse these crates.  They don't discard them, contrary to popular belief. Reusing them would be green if they were discarded.  Sadly, dairies must keep replacing their stolen milk crates.  That means more resources used.  The milk crates outside stores aren't being thrown away; they're awaiting pickup from the dairy driver. Even damaged crates belong to the dairies.  They send them to be repaired and continue to use them. http://www.gotmilkcrates.com/myths-and-misuse.html

Posted by supersoftdrink 6 years ago


Other uses for Second Life?

In an instructable I recently published (How to pick up women online), I have discussed how to make use of Second Life in order to beat Approach Anxiety, to perfect some pickup techniques, and to improve conversation. I know of a few second life players who have made use of the game in order to overcome their fears, insecurities and phobias, and to widen their horizons. It seems to me 3D virtual worlds offer a tremendous opportunity to acquire real life skills (for instance I also know people who have used second life to perfect a language). I was wondering if anyone could think of similar uses for second life, and ideas on how to implement them.

Posted by jackson reinerman 7 years ago


Advice for Building My First Electric Guitar

I'm trying to build my first electric guitar. I figured building a neck is not something that I want to get into my first time, so I'm planning on buying a stratocaster neck and fitting it to the body shape I've designed. I'm probably going to use 3 single coil pickups and a typical stratocaster 5 position switch. However, I want to have the gibson style bridge and knobs. Am I in way over my head for my first time? Does anyone have any advice on how to set the neck at the perfect distance from the bridge? I'm assuming I want to 12th fret to be exactly half of the length of the string, but I'm not sure. Also, if you have any other general advice, I would highly appreciate that.

Posted by saxman42 10 years ago


I just took a ride in an awesome truck

Here's some photos from the new model from Topeka Electric Motors. It's a 3/4 ton Chevy pickup with a gigantic motor and a boatload of lithium batteries, with an automatic transmission, power steering, power brakes, A/C, etc. The motor on this thing is HUGE...a foot or so in diameter. This is a truck that could tow a cement mixer. They're using it as a work truck to deliver electric motors, pumps, and everything else they work on. I took a ride in it this morning, and it runs smoother than a gas truck. This is the brainchild of a few smart guys at Topeka Electric Motor. These guys are tuning the shift points for an electric motor to get maximum power and efficiency, programming the controller to perfectly match what the motor needs, and basically making a vehicle that beats the pants off anything the big companies with hundreds of engineers have put out.

Posted by CameronSS 6 years ago


how to acquire materials for a gokart/human powered vehicle???

Ok so i once again have a crazy yet bound to work sceme the only problem is i do not have the resources or raw materials basically what i need are a couple good condition yet unwanted bikes naturally i turn to my local thrift stores but oh bummer my pickup truck is out for good (the engine is literally out of the vehicle) so basically i am unable to transport the bikes to my home and since everyone else in my family drives tiny economic cars i am really stuck i could  techinally ask one of my neighbors but that would be akward (i am between 12 and 16 years old) i really need help with this one guys (and girls) any ideas are most appreciated thank you, fidgety2

Posted by fidgety2 8 years ago


Jewelry tools for sale

My boss recently purchased all the tools from a jewelry shop that was going out of business and subsequently has a lot of tools that he is parting with. While these are primarily jewelry tools many of them are perfect for prop building. He has some nice workbenches, casting equipment, benchtop laser welder, a large polishing station, plating rectifier, rolling mills, benchtop lathe, flexshaft motors/handpieces, microscopes, engraving tools and all kinds of small hand tools. There's too much to list here- I have a complete listing of everything with photos and pricing. Some of this equipment is pretty big/heavy so local pickup would be preferred (Boulder, Colorado) but he said he'll ship equipment if need be. After downloading and viewing the list if there are any questions just message me and I'll try to answer them as best as possible or have my boss email you. Thanks!

Posted by Honus 7 years ago


Gasifying truck travels 10,000 miles

From the first time he saw Emmett "Doc" Brown fire up the Mr. Fusion home energy reactor in the "Back to the Future" movies, Dave Nichols has always wanted to make a vehicle run on garbage.Two decades after the trilogy, the 42-year-old home builder and auto shop owner from eastern Connecticut isn't traveling through time in a DeLorean, yet. But he's modified his 1989 Ford F150 pickup truck to run on wood, leaves, cardboard and other "biomass" with a fuel system that he says expels virtually no pollution.The technology is called gasification, and it's been around since the 1800s, when it was used for street lamps and cooking. It even powered some vehicles during World War II, but faded away under oil's dominance.Associated Press ArticleRelevant Instructable

Posted by Kiteman 9 years ago


Robot notice: mixed instructions?

I received the following email from Robot, when I submitted my entry for the COFFEE CUP contest:  The problem is the last line, the "requirements"....am I missing something or is this a requirement of the Coffee cup contest also?  This is to confirm that your entry 'Telephone Pickup Loop w/coffee cup enhancement' for the 'Coffee Cup Challenge' has been received and will be reviewed. The contest closes on May 9, 2010. 12:00 AM. Thank you for submitting your Instructable to the Coffee Cup Challenge.  The contest is moderated, and so your entry is waiting to be reviewed. This process can take up to 48 hours. If after 48 hours or so your project has still not been accepted, then it did not meet all of the requirements for participation in the contest.  You will then need to make the appropriate changes to your project so that it meets the contest requirements and re-submit it to the contest. Requirements:  - Entry involves improving health or makes life easier for someone affected by an injury, diisability. or sickness.  

Posted by Goodhart 8 years ago


Second Semester Car Drawings

Well, the second semester is pretty much over and I'm getting hit hard with last second work so I figured I would put these up now for some input. If you didn't see my first semester drawings please do, but if you did you know that my company that I band all these designs to is called Veloci. Veloci is the name of the car company I would own someday in the very far future. If you like what I drew and are going to make one of these, tell me. I don't really care if you do make one but I would like to see how it would look in real life or scale size. As far as the cars here I designed: A pickup truck designed like a Bugatti Veyron, Dboye82 's H-pulse concept, Ford Focus ZX3 with Lambourghini styling, a semi-truck, and my company's first golf cart! Please tell me what you think of my cars and if you have any suggestions for cars feel free to comment. I always like new/unique ideas.

Posted by JonnyBGood 5 years ago


Acoustic instrument with added speaker in the Body?

Hi... :-) I am in a mariachi band and play an acoustic instrument called a guitarron. Sometimes at gigs it is too noisy or too large a venue that it is difficult to hear the acoustic instruments and singer w/out mics and would like to try and make my guitarron into a portable speaker system which has ample space to add hardware. I am looking forward to reading all the fantastic, innovative ideas (even the sarcastic with, if any), but would like to:  *Keep the weight at a minimal level (as I will be carrying my instrument)  *Allow inputs for a mic and 1/4" jack (1/4" my guitarron has thanks to an "instructables user", which works great!)  *Allow for mp3 input  *Battery powered, if possible Also the speaker will have to be small to fit through the sound hole, but if needed for better, louder sound I can make an opening to the body to allow for a larger speaker. And if anyone has any other suggestions or a similar idea to what I want to achieve, please post it... Thanks to all who have taken the time to read my project idea!!! Hopefully it is possible and not too far-fetched...

Posted by Karma213 3 years ago


How to Break Solder Tabs On Ni-Cad Battery Pack

So, in a fit of optimism I decided to rebuild a Ryobi One 18v battery pack for my drill. The task seems rather straight forward except that I can't gracefully remove the soldered tabs on top of the batteries that actually make the circuit and connect to the wires.  In the past, I would have removed something like these tabs by either holding the soldering iron to them to melt the solder, slicing the solder with a razor or a combination of the two. These tabs, however, are seriously attached. They won't pry or slice off and the metal of the tab begins to melt before the solder does if I try the iron. I think anymore heat will damage the battery themselves.  Now, it's been a while since I did any electronics work but after a couple of tries I remembered which end of the soldering iron to pickup. I don't think I missed anything. It just seems like these tabs aren't attached with run of the mill solder.  Has anyone had this problem (and found a solution) or am I just missing something blindingly obvious?

Posted by shannonlove 7 years ago


funnel-thingee?

Just a thought, but what if you added a sort of a funnel to the windward side of the box that holds the belt? Could that allow a single windbelt to get more power out of less wind? Of course that would also make it more susceptible being to torn apart by a strong wind, speaking of which, has anyone thought of some sort of safety mechanism that would keep it from coming apart like galloping gertie? p.s. has anyone thought about the dynamics of the belt itself? Does a wider belt vibrate more? How about length, is longer better, or do you eventually reach a point where adding length has a nominal effect on the power generation? What about power storage? Couldn't you have it charge a battery, like solar cells do, and then use some sort of power inversion out of that? And by what method is the magnet attached to the belt? What about guitar pickups? I mean a single metallic wire as the belt and the box around it containing some sort of magnet/coil setup. Is that too inefficient, or could something like that be done? Because that might be able to withstand greater wind forces, although a cylindrical belt wouldn't work as well as a flat one.... I think that's all for now. Sorry to ask so many questions, but this idea really interested me.

Posted by nickajeglin 10 years ago


Remote Lockbox

I would like to build a small lockbox to which I could remotely provide access.  For example, I leave the box at a property.  At a later date, an employee is in the area and we would like him to access the property without having to make a trip back to the home office to pickup the keys.  We provide him a one-time access code and he retrieves the key. I recently discovered how much fun Raspberry Pi DIY projects are and this seems like an ideal candidate for my next challenge but I have to confess I am still a total neophyte to all this with no real notion as to the best way to move forward.  I would welcome any suggestions or ideas.  I also realize my definition of the problem might be more vague than is ideal but given my lack of confidence vis-a-vis which details are relevant, I thought it would be more productive for me to answer questions rather than post a giant wall of useless information - which is my long-winded way of saying, please do not hesitate to ask me any questions if they'll help get me pointed in the right direction.

Posted by Jason357 1 year ago


New Novel Idea- Stockholm Syndrome.

After years of writer's block over a mediocre novel idea (military special forces team), of which I only have half a chapter done, I decided to scrap it and start anew. My old idea was thought up when I was around 12, so of course it didn't pan out. I want to know what you think of my knew idea:Title:Stockholm Syndrome.Story outline:After a successful recovery mission (of a hostage), the evacuation copter is shot down after pickup. All but a few are dead. One marine watches in horror as the insurgents that shot them down move in and execute the wounded. He is last, the barrel of a gun pressed against his head. The executioner is about to pull the trigger when the insurgent leader orders him to stop, he apparently sees something in this marine. The marine is taken prisoner instead. After several years of imprisonment, the captured marine comes down with Stockholm Syndrome (These men saved his life, they could have killed him like the rest). He rises through the insurgent's ranks, committing brutal war crimes along the way, and eventually becomes their leader. He then goes on to orchestrate a major (successful) attack on the U.S. First or third person? I'm thinking first.

Posted by Spl1nt3rC3ll 10 years ago


Toggles, LEDs, and Ultimate Frisbee

So here is my challenge. I play an ultimate frisbee pickup game every week (Tuesday at the Harvard commons in Cambridge, MA, at 7PM stop by and play!). We have a great LED frisbee that extends the games into the night, but once it gets really dark telling teams apart becomes challenging. I hit upon the idea of making LED 'throwies' for one's body. Take a little 3v watch battery, tape the leads of the LED on with some electrical tape, and then use a safety pin clip it onto to clothing, and blamo!, you have an LED pin that makes playing ultimate frisbee in the dark surprisingly easy, fun, and colorful. There are some problems with this. First, it takes a little time to wire up the LEDs. It is a fun group activity to start with, but this is a pickup game so people wander in all of the time to play, and each time this happens someone has to run off to make some more LED pins. It would be awesome if I just had a bag of them ready to go. Second, I have to pull the pins apart after each game. Third, my red and yellow LEDs (blue and green are fine) really need a resistor as they tend to go dull. Finally, I would really like to make these guys a little more robust by fixing the leads on more solidly. So, with that said, here are some things I could use some ideas on. 1) Cheap toggles. I needs them. I would be willing to toss a few more dollars at these pins if I didn't have to tear them apart each time. Toggle switches would mean I wouldn't have to tear out the battery each time. I am having a really hard time finding cheap small toggles on the inter-tubes. Does anyone know of some good places to look? There is also the added challenge of finding a way to attach the toggle in a mildly robust manner. 2) I am looking to rig these pins up into something a little more sturdy. I was pondering soldering the LEDs to the 3v coin batteries I am using and then super gluing the solder. Is this workable, or should I just break down and buy some battery holders? If battery holders are the answer, again, does anyone know of a cheap place to look? Finally, does anyone have any other interesting suggestions? I am willing to drop a little money into the project, but I really don't want to be spending 5 dollars per pin. In my ideal world my final product would look like an LED, a battery, and switch mounted on a safety pin in such a manner that if someone sticks it to their shirt and rolls into the ground it doesn't break. Getting all of those things to come together in an even vaguely cost effective manner is proving to be a bit of a challenge. Any ideas would be great!

Posted by JonnyProton 9 years ago


Mounting Lenses On Your Microscope

I found a broken cell phone with it’s camera and wondered if the lens could be used as a microscope objective. Image A shows the lens and it’s mounting with the CCD. The back of the lens is shown. The lens is about 4 to 5 mm in diameter. The starters from florescent lights make good lens holders. Image B shows a starter along with my modifications to hold the cell camera lens. The starter tube has 4 slits along the length so it can be compressed to fit the turret of the microscope. Image C shows it mounted on the turret. Image D shows the resulting view of a feather. It’s quite bad. Image E shows, for comparison, the view through an ordinary 20x objective (.40 NA). Here are some more lenses that I tried: Lens from a discarded flatbed scanner..... Very good! Lens from a 8mm movie camera...... Fair. Lens from the laser pickup of a discarded CD player..... Almost worthless. To take pictures through the microscope, I used eyepiece projection with a wide angle eyepiece. The lens on the camera was set to wide angle and maximum aperture, with a remote used to trigger the shutter. The camera’s LCD was used to focus and adjust the image. The camera’s autofocus handles the rest. For even illumination, be sure to center the objective lens over the substage condenser.

Posted by ShutterBugger 8 years ago


MY ROBOT COSTUMES ARE FOR SALE!!

I really hate to do this but our family has grown by +1 and I am starting my sophomore year of pursuing a mechanical engineering degree with another two more to go after this.  Sadly, to cover bills and expenses, the robot costumes are up for sale. The men's costume fits me well at 6'1" 190lbs. The women's costume is sized for a 5'3" size 12. I know it's short notice for this years Halloween but if someone acts quick, I can ship quick and maybe you can own contest winning one of a kind most amazing robot costumes ever. Maybe your town has box robot army events or maybe you could start your own army of 2 with these! A few caveats, the costumes have been stored indoors 100% of the time but the steel components were not painted so they have some surface rust (makes for a nice distressed patina). The current state of the costumes requires tying ones self into the costume (with the help of another) which we used bailing wire for. They are large bulky items so shipping will likely be fairly high. Local pickup is available in the Seattle/Tacoma area or maybe "Greyhound Freight" would be a cheap option. Make a reasonable offer on the pair and they can be yours! The detailed build of the costumes can be seen at the instructable below: https://www.instructables.com/id/How-to-build-robot-halloween-costumes/

Posted by onebrokenneck 5 years ago


The New Knex Innovationists Tournament - T.N.K.I.T (Round 1 Results)

The results for the first round of the contest. Good luck to the people who moved on! -Viccie.B1993- 1st: Kairah --- Kairah's K'nex Train V01 --- 770/800 points. 2nd: Jollex --- K'nex Snowmobile --- 640/800 --- points. 3rd: (Atlas) --- Knex Pickup Truck With Suspension --- 620/800 points. 4th: Silentassasin21 --- Willy's Jeep --- 610/800 points. 5th: Knexguy --- FN-SCAR-H --- 600/800 points. 5th: ZakS95 --- K'nex Car --- 600/800 points. 6th: Serial-Cricket --- Horse Drawn Carriage --- 590/800 points. 7th: 222222222539 ---- Every Terrain Tank With Fully Automatic Turret - 580/800 points. 8th: K'nex Mad --- Knex 4WD Truck --- 550/800 points. 9th: DJ Radio --- 4WD Tank - 540/800 points. 10th: Killer~SafeCracker --- K'nex Racer --- 530/800 points. 11th: The Jamalam --- T.N.K.I.T I-Think-Entry --- 510/800 points. 12th: Owen-Mon-82397 --- K'nex Car (TNKIT Entry) --- 490/800 points. 13th: Heat-Seeker --- "Gypsy" Caravan --- 480/800 points. 14th: Cj81499 --- The New K'nex Innovations Tournement Car --- 400/800 points. 15th: AJLeece --- Random Car For TNKIT --- 360/800 points. 16th: Millawi Legend --- K'nex Tunes Puller --- 310/800 points. The people who aren't listed did not move on because they were too late. Link to round 2: https://www.instructables.com/community/The-New-Knex-Innovationists-Tournament-TNKIT-2/

Posted by Skreetsha 9 years ago


Thiefbot

I really enjoyed playing Descent and Descent II, but I hated that $*!%#@ thiefbot in Descent II. I'm thinking that a thief bot running around the house would be pretty fun. It would like dark spaces, but come out into the open occasionally, or when it's quite dark to steal things. It would use a simple mechanical capture and release with a "loaded" sensor. After stealing something it would move around the darker spaces of a room until it sees its' lair and "hoard" items in it. A while later, it would go out again. I expect I would want this guy to dart around pretty fast, so I'd probably increase the drive speed, so as to make it more of a tripping hazard. So the rules would be something like: 1) Move slowly and randomly in shadowed or relatively darker areas. 1B) Randomly dart out into lit areas for a short while. 2) Move very quickly in bright or lit areas until a small object is loaded or darkness is reached again. 3) Only steal one item at a time, so be aware of Load/NoLoad condition. 4) When loaded, begin lair sensing and follow dark areas slowly until the lair is sensed. 5) When the infrared lair marker is sensed, navigate towards the lair and engage the mechanical release until a NoLoad condition it achieved. 6) Charge and wait awhile. 7) Begin navigating slowly and randomly in darker areas. This would sure make my nightly pickup easier. And more fun.

Posted by royalestel 11 years ago