Part Suggestion

I'm planning on pranking a friend by hiding a really loud buzzer in his house but I need some sort of way to be turned on after a certain amount of time (so I can get away) any suggestions? (preferably cheap ones)

Posted by Undemption 7 years ago  |  last reply 7 years ago

What can i do with lots of earphone speakers?

I've got a lot of earphone speakers from cheap giveaways ,and other peoples smashed earbuds. Can anybody think of something cool to do with them?

Asked by kaiga 4 years ago  |  last reply 4 years ago


What is a good place to find piezos? I know I can find them in some old computers and cheap toys with "sirens" in them. What other devices readily have piezos installed? (....and please spare me the sarcastic answers about finding them at Radioshack)

Posted by randofo 10 years ago  |  last reply 10 years ago

Best Motors for underwater thrusters?

I plan to do a Arduino based ROV for that i need thrusters i searched for thrusters but can't find for cheap, So plan to do thrusters please suggest me best motors for thrusters?

Asked by athuv 3 years ago  |  last reply 3 years ago

can any body give me design of cycle based jig saw?

I work for aborigins in india they require cheap human powered machines can anybody help i want jigsaw, drill machine design

Asked by sanjay117 9 years ago  |  last reply 9 years ago

Precision Stepper motor????

Is there a precision stepper motor and programming hardware that i could program to go to a certain 1/50 of a turn. I would use it for a locker lock unlocker, 3 digit combo lock. What are my best options for cheap?? Thank you

Asked by theboygenius 5 years ago  |  last reply 5 years ago

how do i build a simple pullout (gaucho) bed for a minivan?

Plans for a pullout, sliding or gaucho bed for a Toyota Previa minivan. simple easy to build cheap materials, removeable, storage underneath

Asked by 9 years ago  |  last reply 9 years ago

Can an auto generator be used for a windmill?

Can an auto generator be used for a windmill? They spin at high and low rpms and are plentiful. They generate 12 or more volts here in the U.S. I am new to this and just trying to cheap out I guess. Thanks!

Asked by Belmont1 9 years ago  |  last reply 9 years ago

RAID Config with multiple flash-drives but no Flash-drive HUB

Is it possible to connect flash-drives without a hub and set them to a RAID config? Or should i stop being cheap and buy a hub and make them into a RAID set?

Posted by spiker 10 years ago  |  last reply 10 years ago

Limit of compact flash card for A75 canon?

I have a canon A75 Digital Camera which uses a compact flash card. Now that the flash memory is cheap i wanted to know what is the capacity camera can handle.?

Asked by chicagopooldude 10 years ago  |  last reply 10 years ago

Wine Barrel

Does anyone know anywhere i could go or look to purchase/obtain an empty (large) wine barrel, like the old fashioned looking wooden ones for cheap? i looked around but to buy a large one like 55 gallon is REALLY expensive

Posted by puno 8 years ago

Cycling activity, need help?

Next week, I will have a cycling activity, and I want to buy cycling shorts for my girl friend. Has any one tried It seems very cheap, but I am afraid of the bad quality.

Asked by Hughes Jessica 6 years ago

A Guide to Screen Printing As a Supremely Accessible Art Form

Here's a pdf of an in depth tutorial on high quality, cheap screen printing. I couldn't post it as an instructable so I was told to post it here. Check it out: (the pdf below)

Posted by humanpoweredprinter 11 years ago  |  last reply 11 years ago

modifying a usb web cam to view images through my telescope on my computer?

I'm looking for a cheap way to view images and the sky through a telescope on my computer or take pics with my digital camera. any ideas? al2009

Asked by al2009 9 years ago  |  last reply 9 years ago

Scorbot Bot III software?

I am a high school drafting and engineering teacher.  I have been given a ScorBot III robot (cool) without software. So if anyone knows where I can get my hands on it let me know. If is cheap!

Asked by gandyo 9 years ago  |  last reply 7 years ago

Buying components for the niftymitter?

I have the skills necessary to build it (from a digital electronics course at school) i just lack components... Whats the best place to get electrical components cheap with a low shipping cost? I have searched and searched to no avail...

Asked by quellek2 8 years ago  |  last reply 8 years ago

Does anyone know how 2 make skateboard trucks?

Hey if anyone can make some skateboard trucks that would be great I am a dirt cheap skateboarder and can't afford the 20 bucks to buy some

Asked by paininthebutt 7 years ago  |  last reply 7 years ago

Blinky Geeky Tabletop Decoration with CMOS 74C14

I made this blinky geeky tabletop decoration based on my instructable over there: have fun and share your ideas!

Posted by mischka 8 years ago  |  last reply 8 years ago

Please suggest some easily available and highly efficient adsorbents for waste water treatment.

I want to do my B.E. project on the topic- "Adsorbent for waste water treatment," please suggest naturally available adsorbents which are cheap and easily available

Asked by Deepak91 5 years ago  |  last reply 5 years ago


I have to make a shield to go with my 300 Halloween costume, but I'm not sure what to make it out of. I need a quick, easy and cheap way to make a shield that looks like the one in this picture:

Posted by omnikin 11 years ago  |  last reply 11 years ago

how can i make a pond vacuum?

I have a medium size fish pond need a cheap way to clean algea. i read about pond vacuums but all so expensive. does any know how to make one?

Asked by sabie 10 years ago  |  last reply 7 years ago

I'm looking for a programmable wrist watch that would allow me to set a countdown remotely. Any ideas?

 Ideally, the watch would be cheap and even disposable. Not sure what wireless transmission would work best, i.e. wifi / bluetooth / other? 

Asked by gabemastey 8 years ago  |  last reply 8 years ago

what can i make with a broken pair of headphones?

The music still plays but the headband is broken I also have a pair of cheap earphones i no longer need, what can i make with those?

Asked by belgazery 6 years ago  |  last reply 6 years ago

Is there a glue that will permanently bond a polyethelene tarp and be waterproof ? Answered

I was looking for some type of glue that is fairly cheap and will toughly bond polyethelene tarp that i will use to make my homeade range tent it needs to hold well be waterproof and foldable to fold with the tent.

Asked by camping crazy 6 years ago  |  last reply 6 years ago

Can a stick welder Weld aluminium ?? Answered

My dad has a mig welder and i dont want to buy a gas kit for that so ive been thinking of buying a cheap stick welder WIll it be able to weld aluminium angle or box aluminium

Asked by stephenniall 9 years ago  |  last reply 4 years ago

What is something I can make this summer? Answered

I would like something that i can actually use or is valuable. Maybe make power. I am up for all suggestions, my budget is about $50 but may go higher because i am going to mow lawns this summer.

Asked by beyondimagination 9 years ago  |  last reply 9 years ago

OPINION: White macbook upgraded ram or Uni-body Macbook. Answered

I am almost 15....i have 700$ and am saving for a Macbook. I am torn between the 999$ White and the 1299$ Aluminum... The specs are almost identical now that apple has upgraded the white ones and i am pushing toward the white. What upgrades do you recommend if i got the white macbook? Here are the specs: White( Aluminum( help and be nice

Asked by dane480 9 years ago  |  last reply 9 years ago

what is a good motor/alternator/generator to use for a bike generator that's cheap (under $50, preferably under $20)? Answered

I'm on a budget and the bike is going to be mobile so I need a cheap motor but I also need it to be light. The bike would be used to power a USB hub where any USB powered device would be charged or used. So all i need is 5 V. I don't think an alternator would work becuase they look very heavy and I would be riding about 10-20 mi. round trip. It must be light and as far as attaching it goes I intend to use an instructable on bike generators or just plumbers ties to attach it. The only instructable that met all the requirements I've named that I've seen was . That motor was too expensive "We decided to stick with our Maxon 90, which was a beautiful motor, even though its cost was $275." . Thus the need for a cheap light motor to charge a USB driven device. By the way, thanks for everyone that has posted so far!

Asked by cdubnbird 10 years ago  |  last reply 8 years ago

How would I make a simple Infrared Heater?

I am planning on build ing IR Heater. would a 6 millimeter IR emmiter with 960 millimeter wavelength work to produce heat? If your not aware with IR heaters then here is a short explanation: A normal heater such as a gas heater heats up the surrounding air, but a IR heater uses infrared waves to heat up surfaces of objects. So instead of heating surrounding air the IR waves heat up surfaces of objects. Also IR waves penetrate the epidermise (top layer of skin). Here is a diagram of what the circuit looks like. The question is would this circuit work? Also are 6millimeter IR emmiter with 960 millimeter wavelength work?

Asked by planetroverrobo 6 years ago  |  last reply 1 year ago

Looking for homemade candy recipes!!!! Answered

Me and my friends are looking for some extra money and decided that we were going to try to sell some homemade candy. We are looking for some easy-ish recipes, but we are willing to try some harder ones too. We are on a pretty (very) low budget. Maybe $25 or so. So, if you know any recipes personally, or the URL's to some other recipes online, please include them in your answer. Alternatively, you could private message your recipes and info to me on YouTube. My channel is TNTutorials. Please do your best to contribute. We are doing our best to save up money for some personal goals, and the civilians in my neighborhood are candy heads, so we thought that this should work. Please take this seriously, and try to contribute! Thanks!!!

Asked by fearmonger12 8 years ago  |  last reply 8 years ago

Potential $5 RC Hovercraft

Hey y'all, I was bored, so I made this RC hovercraft, kinda like a Tiny Whoov, from the guts of a $5 RC helicopter (sold at most FiveBelows). The idea is that a hovercraft is more fun than a cruddy helicopter, in addition to being a fun and easy DIY project for the weekend. It could be a nice gift to a kid. My first concern was that the motors would not provide enough power to get the thing moving. They give more than enough power, and this thing can MOVE. My second concern is that the differential thrust steering system (one motor turns faster than the other, steering the hovercraft) would not be effective enough. This is still a problem that I don't have the enthusiasm or time to solve anymore. Maybe someone could figure out how to reprogram the FC board to have more differential thrust (is that possible?), or somehow configure a servo or actuator without raising the cost of materials too much. Anyway, here's the concept, go have fun with it.Supplies:Foam platesHot glue$5 RC helicopter with 2 motors and receiver (LED optional, but really cool)Connector (the battery might be soldered directly to the FC board, so this will make it easier to fiddle with)Soldering iron (not %100 necessary, but it can come in handy)Propellers (see design notes)Design notes:Notice how the underside of the hull is curved and smooth. I used propellers from a Blade Inductrix FPV Pro, but any micro quad propellers should work. Notice the nice little compartment under the FC board where you can stick a battery without the need for Velcro or glue. This would be a very easy FPV mod, but that would add about $20 to the cost.

Posted by Thorondor95 11 months ago

77 Creative Projects You Can Make Yourself with SCRABBLE Tiles! -- Beyond the Scrabble Tile Pendant :)

SCRABBLE IN STYLE: 77 Fun & Fresh Scrabble Tile Projects! This Jam-Packed Full-Color PDF Guide (40+ pages!) goes WAY beyond the classic Scrabble tile pendant. (not sure what the craze is all about? Check out )In my latest, most comprehensive guide, you'll discover everything you want to know about Scrabble tile crafting, including:- 8 Basic Technique Mini-Tutorials- 13 Ways to Make Scrabble Tile Jewelry- 65 Instructional Diagrams & Photos- 4 Funky Finishes- 4 Ways to Jazz up Your Tiles- 6 Scrabble Tile Alternatives- And Much Much More!!!Check out a few preview pages below to discover just a small sample of what youll learn when you purchase this electronic tutorial.Over 300 tutorials sold in the past 2+ months... here's what a few people have been saying:........................................................................................................................................................................"What a wonderful tutorial! I've never seen any instructional ebook more professionally done than this one...Laura is wonderful to work with!"........................................................................................................................................................................"As easy as 1,2,3. The instructions are clear, step by step and help links to various websites. A+ Seller!"........................................................................................................................................................................"You rock girl! This is a fabulous deal! I was already making Scrabble tile jewelry, but it looks like this has SO much useful info. Great job! You can tell a lot of work went into this E-Book." ........................................................................................................................................................................"Lots of good information...great customer sweet it is when you purchase something the seller says if you have a problem just get in touch with them...what more can you ask for!!! prompt, friendly service."........................................................................................................................................................................ Check out the tutorials for yourself at http://thescrabblegal.etsy.comLook forward to hearing from you soon!LauraTheScrabbleGal :)

Posted by TheScrabbleGal 10 years ago  |  last reply 9 years ago

How can you make a dynamo. . . and if you spin a moter does it genarate electricity? Answered

Wanting to make a mini windmill and was wondering if a small rc car moter can be changed into a dynamo or if not how you can make one for cheap

Asked by dunc_kill 8 years ago  |  last reply 8 years ago

Under water housing

I have been looking for a cheap underwater housing for a camera. I can't find anything under $120.00 and I don't have access to plexiglass or acryclic. I am prefering under $20. Does anyone know how or what to do?

Posted by ry25920 11 years ago  |  last reply 10 years ago

valentines day gift for my girl

Hey,im a kid(11 years old) and i need help getting a good but cheap gift for my gal.valentines day is important to me,and it is to her also.i was thinkin bout gettin a teddybear for her.please give me ideas!

Posted by megapun13 11 years ago  |  last reply 8 years ago

Building Wireless Camera

I am trying to build a wireless camera. I have a cheap little camera and software for it to run on the computer, but I have to have it connected by the USB cable. Is there a way I can do it wirelessly? Is what I am looking for just called a wireless transmitter?

Posted by Sherman315 12 years ago  |  last reply 12 years ago

geeks of instructables i call upon you help me make a powerful, portable, long -range emp generator

It needs to be cheap, long range, easy to make, no cameras, portable, and preferably directional                                                    and how can i make an emp shield

Asked by DELETED_madscientist167 8 years ago  |  last reply 8 years ago

can a front derailleur for a 12-21 speed bike work on a 10 speed?

My front derailleur broke today(SO LAME!!) but i found a new one on amazon pretty cheap, but it says it's for 12-21 speed bikes

Asked by .happy.hippie. 9 years ago  |  last reply 9 years ago

how do you clean the pllastic covers on headlights(the foggy film)? on your vehicle?

I need a cheap easy way.  I saw someone use a kit from walmart for around $20- but that seems outrageous.   Thanks

Asked by couponkelley 8 years ago  |  last reply 8 years ago

How to build a hydro power generator for my artisan well?

The over flow is steady, all year long, but is very slow and can vary at times. the spout is close to the pond in which it over flows into, so please keep the parts cheap. thanks runningriot42

Asked by RunningRiot42 9 years ago  |  last reply 9 years ago

I'm melting

I recently got some thin PVC plastic for cheap.  I would like to soften it so I could shape it, but I have no idea what temperature to do it at or what to use to heat it.  I don't want to spend money.   Thanks!

Posted by elliot5445 4 years ago  |  last reply 4 years ago

How to make a voltage multiplier?

I need to make a voltage multiplier that is cheap and easy to make and can get up to 20 times the input voltage(12 volts).  Its for an electric car design.  Can anyone help?

Asked by Kalrag 8 years ago  |  last reply 8 years ago

Wireless camera?

I was wondering if there is a wireless camera you can make, get or buy. i want to make a wireless robot that will drive around and transmit video to my computer wirelessly. please help i wonder if there is a way to like convert a cheap webcam to a wireless one.

Asked by ski4jesus 8 years ago  |  last reply 8 years ago

Laser cutter

My dad has an old plotter that I plan on converting into a laser cutter, and I was wondering how powerful the laser needs to be in order to cut thin metal (its ok if it can do it in multiple passes). Where could I get a cheap one? Thanks LinuxH4x0r

Posted by LinuxH4x0r 11 years ago  |  last reply 3 years ago

Speakers in wall

Anyone tried to put, in wall speakers, in wooden boxes? I know in wall speakers are build for wall but how they are going to sound in regular wooden boxes. I got, very cheap, high end in wall speakers. Why not build boxes and save $1000 ?   Any experience ?

Posted by mavava 1 year ago

A photoshop pen

Hi Lately while working in PS I noticed that I needed a way to freehand with a pen but couldn't afford a professional one.I was wondering if there was a way to make one on the cheap.This is what I'm talking about.

Posted by Commando Bunny 10 years ago  |  last reply 10 years ago

Any idea where one can get a Valco Airline guitar?

The title says it all. Does anyone know where I could buy a Valco Airline guitar (like Jack White's) for cheap?

Asked by freeza36 6 years ago  |  last reply 6 years ago

How do I spice up my guinea pig's habitat?

I have a 6 month old guinea pig named Patunea. I try to spice it up on the cheap but it's suckish.

Asked by CrayfishYAY 8 years ago  |  last reply 6 years ago

WiFi Repeater with Arduino? Answered

Would it be possible to make a WiFi repeater with the equipment on this Instructable: withe the addition of Arduino and a small LCD? It would be really awesome and may even lead onto cheap mesh networking! :D  Thanks for any help! :)

Asked by Sev the Sniper 7 years ago  |  last reply 7 years ago


Does any one know how to make a cheap 8 channel rc transmitter and reciver for a rc plane from scrath or house hold don't ask me to hack a rc car pls explain in detail and instuctable...thanks in advance

Asked by mihir.sahu.355 3 years ago  |  last reply 2 years ago