Really Cheep Battery!

Ok i found a re-chargeable battery for less then a dollar!http://www.radioshack.com/product/index.jsp?productId=2103201&y;=11&x;=11&retainProdsInSession;=1

Topic by Sandisk1duo 10 years ago  |  last reply 10 years ago


Whats the cheapest mp3 player you can find? Answered

I don't care if it has no screen 512mb minimum

Question by qwerty29 10 years ago  |  last reply 9 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. ?

Topic by Twistman 10 years ago  |  last reply 10 years ago


Desoldering without the right tools.

I am interested in desoldering a few things to get some parts.  However I bought desoldering braid quite a while ago and have no idea where it is.  I do not have the money to buy a pump (no matter how cheap it may be).  So I was wondering if there was anything else I could use or do.  I do own a soldering iron. I am just playing around with a few project ideas with electronics I had laying around and a few things I have taken out of the garbage.

Topic by jcaresheets 8 years ago  |  last reply 8 years ago


Cheep Aircraft Collision Detection system?

A laptop using an auto detect adhoc WiFi network & ping to measure distance.

Question by FrankenPaper 9 years ago  |  last reply 9 years ago


Cheep High speed video camera Answered

I am a science teacher that needs a "cheep" high speed video camera for a project we do as part of our forces and motion unit.  The students build carts out of paper and straws, then race them down an incline.  I videotape them and then analyze the video and the students determine the speed of their cars. (see video here: http://www.youtube.com/watch?v=XqI5H8d4r7M). As you can see from the video, the slow motion video is very blurry.  the frame rate is okay (they are only traveling at 2-4 meters per second, which means about 8-12cm per frame, perfect for the save we are using)., but the initial position and final position is just an estimate due to the blurry car. Maybe I am not using the right terms, I do not know a lot about film/photography, but i need the individual shots to be clearer. I currently use a Flip video camera, which is good because it is super easy to download the videos for student anaysis. What kind of camera will suit my purposes, without spending more than $400? Thanks, Covo

Question by Covo 7 years ago  |  last reply 7 years ago


dalek costume?

While i was playing around in a wheel-chair i realized that it would be perfect to use for a dalek costume but heres the problem: i cant use that wheel chair and don't have a lot of money. so i was wondering if anybody knew were to get a wheel chair for cheap, also any ideas for the main body? i don't want to use cardboard. any help appreciated 

Question by captainjazzhands 6 years ago  |  last reply 6 years ago


Milling machine cheep from Harbor freight

Ever wanted a small milling machine to mill aluminum ? Heres a cheep way to do it. It's not real accurate but it gets the job done. and for under $ 160.00. all the parts come from Harbor Freight (Drill press on sale 70.00) (roto zipp bit 2.99) ( 8 inch crosss vice 39.00) some bolts and thats it ! it's slow so take your time and the vice is a little rought but it gets the job done. Run the drill press at the highest speed on aluminim slower on plastic and use small cuts , don't try to hog out the part it will break the bit. have fun !! There you have it.

Topic by motorcoach1 11 years ago  |  last reply 8 years ago


cheep 3 volt dc motor nut and bolt actuator

I'd like to make a cheep motorized actuator using a long bolt, nut & a small hobby motor to spin the bolt. I like to know how to attach the small motor to the bolt, or some way to spin the bolt. All I can think of is drill a small hole in the bolt, then J/B Weld the motor on the back. Is their a better way? Not only that but, what do I use to mount the motor at one end & the other end of the bolt to spin freely.

Topic by elkaddalek 4 years ago  |  last reply 4 years ago


how can I make latex?

I need this for movie making type things, liquid latex would be best

Question by wergerfebt 8 years ago  |  last reply 8 years ago


What can i use to make a leading edge for a hang glider? Answered

   When i say leading edge i mean a long piece of material to hold the leading edge in shape. I dont know how to mold somthing so big and i dont know what i could use that would be strong, lightweight, ridged, and reasonably cheep. ( The material has to be able to hold a curve shape. )

Question by aar0nc0le 8 years ago  |  last reply 8 years ago


Looking for a good tracked arduino platform?

Hi, I want to get a good tracked platform for my arduino. I was looking at the dfrobotshop rover but decided that it was too pricey and slow for what I wanted. I was also looking at the tamiya and rover 5 platforms but decided that they all were too slow (but had a appealing prise range). Anyway what would be a good cheap track platform for arduino that had some speed? Thanks, David.

Question by David97 5 years ago  |  last reply 5 years ago


How to make a simple cheep music note generator

I teach music in Elementary school(s) and have a class with several special needs students. I'd like to make a music note generator like a simple keyboard but I want to use buttons they already have. Example. While the rest of the class is playing recorder. These students have a large piece of black poster board with several round dots with note names. While the group plays these students push on the round dots. I would really like to be able to make those dots play the same pitch as the recorders. Just one simple sound with about 6 or 7 different notes. i.e. from D to low D or C. Did I mention that this should be cheep too? (- Thanks, Carmine

Topic by carmitsu 10 years ago  |  last reply 10 years ago


I want to build a really cheep light table

I want to build a good, cheap light table but all I'm finding on the web are instructions to build a light box. Light boxes are for taking pictures of objects. I don't want to take pictures. Light tables are for tracing stuff from an already existing image. Anybody can take a picture. I'm an artist/designer and I design and build stuff from random images. Does anyone out there know how to build a LIGHT TABLE? Gyrine 77

Topic by Gyrine 77 10 years ago  |  last reply 10 years ago


Where can I buy a cheep four or eight channel bandpass filter?

I want to build device that will contain LEDs. Each LED will light up to a different frequency. I believe this is the part that i need for this, is it not? if so does anyone know where to get them?

Question by jmkloz 9 years ago  |  last reply 9 years ago


i need to know how to make a cheap crossbow?

Cheep

Question by 12123434 7 years ago  |  last reply 7 years ago


dos any one know were to buy cheep laboratory equipment in The GTA or grater Toronto Area?

I need a: Hotplate, water condenser, three way adaptor,vacum adapter, claisen adaptor, three neck flask,sepparation funnel,dry tube, a flask, distilation colum,and a capillary with fine outlet.

Question by dciocoiu 9 years ago  |  last reply 9 years ago


How can I engrave a drawling or initials into glass for cheep? Answered

I just got a slab of pressurized glass (security glass) and I would like to put a cool design on it. Is that possible ?

Question by Quest for Questions 8 years ago  |  last reply 8 years ago


How can i find a good,cheep video camrea? Answered

Me and my bud hav a "show" and the fone just aint cuttin it. i need a fairly good camcorder that picks up good sound and can be uploded to the internet. i dont need any of the fansy MP3 crap, just a camera. prise ranj? 350-400.......

Question by redsoxdrummer 9 years ago  |  last reply 9 years ago


ultrasonic

HI, Guys .. i have only little question : IS there any way how to made cheep ( or from house-hold items) piezo ultrasonic transducer? thanks for answer :)

Topic by insurgent 4 years ago  |  last reply 4 years ago


how do i choose a video card Answered

I want something cheep like 50 bucks. the only reason i want it is for plugging it into the tv and waching movies and playing emulated classic games. will a good video card help with emulation. will a cheep video card have blurry output almost forgot i need pci express or agp video card would this do the job http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3053801&CatId;=1558

Question by Tanners 10 years ago  |  last reply 10 years ago


have any mecahanical related miniproject topics and explain how can do?

simple&relatively cheep mechanial desighing for my MINIPROJECT,pls give details also

Question by dijinkumar 10 years ago  |  last reply 10 years ago


Electrical switch

I was wondering if theirs a type of simple cheep switch that would do this: electricity is turned on, a switch completes a second circuit but when original electricity is turned off the second circuit stays on. The first circuit gets power from an outlet but the second circuit runs on a battery But in diagram (I used paint it's the best I can do) I have both running on batteries. Dose any one know of an electrical component that would do this? Or is their any way I could build one for cheep? Thank you.

Topic by i make shooting things 12 years ago  |  last reply 12 years ago


what is a mill ball and how do i get one? ( for making al powder)

HELP!!! what is a mill ball and how do i get one? ( for making al powder) needs 2 be cheep!!

Topic by 10wellsmit 11 years ago  |  last reply 11 years ago


help i need an anvil (not railrode)

I need an anvil that is not railrode and is cheep so a 13 year old may get it. plese i cant make any thing so i cant post any thing and i am helpless.

Topic by knex newbie 11 years ago  |  last reply 6 years ago


micro camera for Rc planes

If been wanting to film some of my Rc flights iv been thinking of two ways to do this: A.) buy a mini camera (not wireless could cause interference with other planes or mine although it should only affect 2.4GHZ or spreed spectrum channels which are designed to handle this kind of interference but i dont want to cause any accidents) or B.) Buy a cheep digital camera and mount it to plane Things to consider:Any thing will add weight to the plane which will affect balance (to solve this add weight till balance)I want to avoid wireless. How to power; battery's weight a lot and take up lots of spaceDragSize of cameraIf i do use micro camera where will it record too?Dose any one have any suggestions or ideas on the best way to do this on the cheep?*update* i found a Camera called the flip video camera it has every thing iv been looking for its cheep about 150$, has a tripod mount, records 60 min of video, comes with editing software, runs on 2 AA batteries, and has a small (1.5inch) Lcd screen

Topic by i make shooting things 11 years ago  |  last reply 10 years ago


micro camera for Rc planes

If been wanting to film some of my Rc flights iv been thinking of two ways to do this: A.) buy a mini camera (not wireless could cause interference with other planes or mine although it should only affect 2.4GHZ or spreed spectrum channels which are designed to handle this kind of interference but i dont want to cause any accidents) or B.) Buy a cheep digital camera and mount it to plane Things to consider:Any thing will add weight to the plane which will affect balance (to solve this add weight till balance)I want to avoid wireless. How to power; battery's weight a lot and take up lots of spaceDragSize of cameraIf i do use micro camera where will it record too?Dose any one have any suggestions or ideas on the best way to do this on the cheep?Original form (it was origanaly posted in that group but it got separated) *update* i found a Camera called the flip video camera it has every thing iv been looking for its cheep about 150$, has a tripod mount, records 60 min of video, comes with editing software, runs on 2 AA batteries, and has a small (1.5inch) Lcd screen

Topic by i make shooting things 11 years ago  |  last reply 10 years ago


can I make my wind gen controller , any smart, cheep circuit link?

I have four stepper motors made up a wind gen setup , almost 1amp, how can I charge a 12v 7amp with regulation, what circuit design do I employ?

Question by celalboz 9 years ago  |  last reply 9 years ago


where can I get flat bands for my catapult???

I am making a catapult and I want to know where to get flat bands for it. They need to be medium power and cheep. please help meeeeeeeeee???????????? :2(

Question by henster22 8 years ago  |  last reply 8 years ago


Cellphone hardware alternative uses? ?

I have a surplus of smartphones and a PDA/Kiosk device for store inventory. My question is, is it possible to use one or all of these devices and somehow create an UMPC? Maby flashed to Ubuntu? I am a massive cheep skate and if this is possible it could be as strong as my desktop that I assembled from freebies...

Question by GunzoZabuza 6 years ago  |  last reply 6 years ago


cj jeep to truck conversion?

I am looking to convert a 5 seat jeep to a 2 seat pickup like the scrambler.  I have a pretty good idea on how to do this but i was looking for an ideas and some help on where to find a cheep jeep for the base vehicle.  any help will be greatly appreciated.

Question by abadfart 8 years ago  |  last reply 8 years ago


i do a lot of sewing and want to try adding LEDs, is it cheaper to get strips or individual light bulbs?

i want to make a tron outfit but don't have a large budget, i'm no afraid of doing a large amount of hand sewing so where can i find LED lights for cheep?

Question by dancingemu 7 years ago  |  last reply 7 years ago


can anyone help with a martial arts wooden (wing chun) dummy?

I have been learning about the fighting and trapping techniques of kung fu and would like a cheep alternative to the 'mok jong' wooden dummy as they are verry expensive,i could use any plans and technical details possible,thanks mike1969

Question by mike1969 9 years ago  |  last reply 7 years ago


lacrosse gloves

Hey im going to upload an instructable on how to make your own lacrosse gloves 4 cheep. so tell me your favorite design and ill try to make them. these are my favorite. the warrior Brass monkey gloves. I play defence so the extra knuckle protection helps alot.

Topic by michael J. caboose 10 years ago  |  last reply 6 years ago


Nitro Rc Glow Plug onborad glow plug ignition

So I'm relatively new to nitro rc and i had a few questions about on board glow plug ignition system  . I know the igniter is cheep and bla bla bla easy however... Can one be made ? I have often thought that i might be able to use a third channel off my receiver with a wire directly to the glow plug and at the flip of a switch the glow plug would ignite but i don't know if it would work and don't wanna spend the money on a receiver  to find out. Is there someone out there willing to give it a go and let me know?  Really my question would be at what voltage does a glow plug ignite? would a 7.2 volt battery do the trick? Are there any CHEEP systems out there?

Topic by telmore 6 years ago  |  last reply 5 years ago


dose anybody have a pen gun that is affective and still looks like a pen?

We realize we are a ding breed, but we are looking for a good way to shoot small stuff out of a pen or pencil without looking suspicious beforehand.  like a spy thing or something like that, we like cheep and we can do complex.  any answers are appreciated

Question by TheMeta 8 years ago  |  last reply 7 years ago


wanted ammunition and antique revolvers

Wanted i pay cash for all most any kind of ammunition factory ammo reloaded ,hand loaded ammo  full boxes particial boxes loose ammo in good condtion i also buy cheep  antique revolvers if any body has any for sale please email me K_boltz2@comcast.net

Topic by happycamper122 7 years ago  |  last reply 7 years ago


I have a three phase power point in my room (500V, 20A, 50Hz ) whats some cool stuff I can make and plug into it?

Preferably something I can make cheep. I have some experiance with electronics(3rd year optoelectronics at uni) but no experience with much more than 1A and 30V circuits.

Question by 10 years ago  |  last reply 10 years ago


Why is my portable charger doing this. Answered

Okay so everything is solderded correctly with the right amount of voltage on the data lines. When i check the voltage it says 6.54 but when i plug my usb up to my phone it drops to 2.89 why is this? I used this https://www.instructables.com/id/Make-a-USB-iPhone-iPod-Charger-On-The-Cheep

Question by tramont 6 years ago  |  last reply 6 years ago


Program a cheap microcontroller to work with a electric odometer?

I need suggestions for 1) a cheep microcontroller, and 2) how to program this controller to work with this setup (link) (minus the arduino) .  If that does not make sense just ask and I will try to answer as soon as possible. Edit: If this solution can have anything to do with the ATtiny85 that would be great because i just found a box at a garage sale that was full of them. Thanks in Advance, Zootsuitman

Question by zootsuitman 6 years ago  |  last reply 6 years ago


What sturdy pipe is best for tent poles? Answered

I'm trying to build one of those old fashioned military style tents at a reasonable price.  I already have a bunch of recycled canvas for the walls but I don't know what kind of tent poles to use.  I think PVC is too flimsy and unstable, I'm not sure about electrical conduit because it isn't rated to withstand a lot of pressure but it is cheep, aluminum tubing is expensive but lightweight. Any Ideas?

Question by zilcho 7 years ago  |  last reply 7 years ago


Easiest and Cheapest way to paint a latex mask?

Hey every one. With Halloween coming I’m preparing to make my Two Face costume. Because I don’t want to paint half of my face I’m using half of an (modified) store bought latex mask. My last step should be the most difficult, painting it. The half of a mask will be doing a lot of moving so I need a flexible paint. I’m only an amateur, but have read some about painting latex. Most methods I’ve seen require mixing different substances. I’d like to get away from that if any was possible, I’d like to make this as easy as I can. The other thing is that it has to be very cheap. I’ve already spent too much money on this costume, and would like to not spend too much more. If anyone knows a type of paint that is flexible and cheap please tell me, because I really need one. Thanks every one. Hope to hear from you soon.

Question by doombot9000 7 years ago  |  last reply 7 years ago


Line counting sensor?

I have a group (20) of small robots that need to all end on a certain line in a grid. My question is how can I get each car to count the number of lines it crosses and when it reaches the right number it stops. The problem is I have a budget of $75 dollars to make the guidance for every car. If there was maybe some sort of central controller that would work for each or maybe it is just cheep enough to make a simple set-up for each one. Any comments or questions would be much appreciated. Thanks in advance, Zootsuitman

Question by zootsuitman 6 years ago  |  last reply 6 years ago


DIY Altimeter for small Rc planes

You can buy altimeters for your Rc planes but their $50+ and i want to know if theres any way i can make an altimeter made from stuff available at radioshack theses planes are light 10-20oz with a 20-40 inch wing span. So i need to know if it is possible to make a small light one for cheep. And if i can then if some body could show me a diagram of how that would be great.Thanks for the help.i just need it to record the maximum altitude reached

Topic by i make shooting things 11 years ago  |  last reply 11 years ago


Is there a simple way to test the air flow/pressure inside my HVAC fan housing?

Is there a simple way to test the air flow/pressure inside my HVAC fan housing? Perhaps some kinda guage I can attach to the blower unit of my fan box for the HVAC? Why? I'd like to test with new filter and then old, to determine when it needs changing. so, I'm looking for a simple, cheep differential pressure gauge or some means to tell if the filter is dirty and thus constricting the flow through the fan unit.

Question by gereckes 6 years ago  |  last reply 6 years ago


How do I wire a 6 IDE hard drive tower?

Dose anyone know how to wire up a 6 IDE hard drive tower? I need it on the cheep. I need it to ether wire up to my home computer directly or attach it to a home computer network, aka network cables & Wi-Fi. Any Ideas or all ready made instructables on this topic. What I imagen it to be a box with the 6 hard drives, power source, a fan & a cable running to a Wi -Fi or computer connection.

Topic by elkaddalek 2 years ago  |  last reply 2 years ago


Best Solar Lights (for Sun Jars/other projects)?

Short: Was wondering if the community had any suggestions for the brightest, longest lasting, most shade tolerant Solar LED lamps? Long: Working on Sun Jar's for little Christmas gifts. Currently using some cheep 2 dollar Solar LED lamps that fit perfectly and seem better than the slightly more expensive one I experimented with, but neither has the endurance to last all night. Anyone found any which performance blew them away? Cost/performance considerations are welcome too.

Topic by cvon buedingen 7 years ago


how can i make a video projector?

How can i make a video projector for less then $80.00? i want the projected screen size to be about 1 meter across and exceptional quality. I'm mainly having trouble with finding a SMALL but HD screen. i also want the LCD to be about 5 inches across. it doesn't have to be exact, but i want it to fit inside a shoe box (hopefully cheep  =D  ). i did find on eBay a small, DVD player with an 8.5 inch screen with Analog Audio and , Composite inputs which might work. i also need help for LED's, preferably from www.superbrightleds.com can anyone HELP ME!!?!

Question by -max- 9 years ago  |  last reply 8 years ago


"Wonder Wash" DIY Request

So I have been looking for a cheap way to quickly wash small loads of laundry and came across the "Wonder Wash" (http://www.laundry-alternative.com/washing.htm).  The main issue I have with this thing is the $50 price tag.  I know that it is a small amount to pay to reduce your water and electricity needs but times are tight.  My baby seems to go through 5-6 burp rags a day and I don't like using the washing machine for such a small load every other day.  Anyone have any insight on how I can build one of these on the cheep? Cheers Cody

Topic by loki7856 9 years ago  |  last reply 9 years ago


I have four 12v 11k car window motors, how would i find this out manually?

I went to a pick-a-part car parts for 12v DC motors, there were a lot of them, and I found four 12v 11k DC motors from a 1991 Toyota Cressida for really cheep (almost free) :) . Google has been no help in finding the specs for the motors, Im just at a loss and I don't want to just hook them up to a car battery that would be way to many amps and is most likely going to brake the motor in the process. so how do i find out the specs of these motors manually?

Question by jwflammer 8 years ago  |  last reply 8 years ago