cheap

Hey everybody!

Hello, I'm a college student from the US. We have a local resale store called "Goodwill". You can buy RC toys (and other stuff) by the pound. The cost is like $0.70 cents per pound (+/- a pennie or two) The store has 100's of bins and they dump donated stuff in them. Then you walk around and dig for your treasure. I have purchased a few RC trucks and a tank for less than $1 USD each. So keep this in mind where you live as there might be a place like this in your town for you to scrounge cheap robot fodder.

 

yourduino.com is cheap and honest, but they have a somewhat limited repertory of products

Hello everyone,

I am currently designing some very budget friendly Motor drivers, and to test the design out, I am giving away 10 free drivers! Each driver is a single or possibly dual (5 single and 5 dual) transistor based design, and cost per board is very, very low. If you would like one of these free driver boards, please post in the forum below. No restrictions! Each board ships with a application note so you know how to use it.

A few specs:

Max Voltage: 30V

Max Amperage: 0.6A

I'm looking to build an uber-cheap robot arm, with the purpose of just sitting on my desk and picking up whatever i want it to... Probably stick with a basic control (independent forward, off, reverse switches on each motor) setup. What i'm trying to figure out is, I'm planning on using a standard 3 wire (forward, ground, reverse) style motor similar to that found in a cheap rc car, yet i can't find any places to buy them, except in the cars. any sugestions?

Hello people of the world :)

Sorry I having been posting any robots so far, but for now I need your help again :)

I have a couple of questions about buying servos. And I don't know how to google what I want so I will just ask it here.

I need a servo that has torque around 1500kg/cm. It can be AC, i have 220V for it. And it musnt be to heavy, becouse i need to make an industrial arm with it, so one would carry atleast 4 more. I would just like links for shops where i can buy that.

findchips.com is a really good site to quickly find cheap sources to the components you are looking to buy.  All you do is enter the manufacturer part number you are looking to price or buy and click enter.  You will be shown up to 27 component vendors which carry the item along with info like price, stock, package, etc.

You can use a product index such as mouser or digikey to find a part that meets your specs and copy/paste the manufacturer number into findchips.

Update 05.04.11: Seeedstudio now cheaper with more options!

Hi guys, I`m attempting my own low speed arduino oscilloscope but have hit a brick wall with my mediocre programming skills. The arduino program and input stage works fine, it`s the PC software thats killing me.

I am looking for a 20 amp motor controller/driver. I prefer an IC, that way I can integrate my own driver circuitry, but if it is cheap (under 50) post it. I'd prefer if it could provide 20 amps per channel. It will be operating on 12VDC.

Hi, I'm planning to make a small set of self designed swarm bots.

 In terms of a mechanical platform, what's my best bet. My criteria are cheapness and easiness. Ideally, it should cost < $25 per platform, and be easy to make.

 So far, I'm thinking of pairing two solarbotics GM9 gearmotors and wheels with a thin wood base, and a third caster-esque wheel.

 Is this the best way to go?

I was playing around with some code for machine vision (object/facial/color/motion-detection) a long time ago, and I'm thinking to put a camera on a robot sooner or later and see where that'll take me.

So I was looking for cheap wireless cameras and I was astonished to find these:

900MHz Mini Wireless Color Camera w/Built-in Microphone - $25.50

 hello everybody here...!!!

Actually m from india . speaking straight, " i can't spend much but also can't live without robotics".

so please give me some advices to not to kill my love towards robotics. i m a student of electronics but here in my college we do not have such facalities for electronics students. so please guide me about how to begin and what resources to use to get over the money problem. 

i really need your help.......!!!!