Let's Make Robots!

Budget Bot

Drive around via Remote control and pick stuff up

Yeah... I just got a wireless transmitter and receiver, along with two servos. Being 14 years old, i will have to wait about two weeks before i can buy anything over 10 dollars. Anyway, i have a Wii Fit, wchich comes with a balance board in a nice cardboard case. So I carved the cardboard and built an ugly little chassis. Now, i plan to give it two arms so it can pick stuff up (obviously light stuff). However i cannot find a way to plug a DC motor into a receiver so it can go forward or backward (go-figure). I will get pictures up soon, and if anyone could help me out with my motor dilema, that would be great. Oh, and i dont have any sort of microcontroller, like Picaxe or Arduino.

The Transmitter is one that i bought used on ebay, it is the FP-T4NBF, and the Receiver is the FP-R127DFThe receiver i havet313258-57-thumb-futaba.jpg

EDIT(D'OH!!! I was reading through this website, hoping for a bit of insight on my servo problem, and I can across the page with the servo alteration.

http://letsmakerobots.com/node/259EM_9g.jpg

I only have 5 bucks on hand, so i could do this, giving me a simple driving motor, and, I also had a moment in which i decided, instead of 4 wheels, I could give it two, like a motorcycle. The way i decided to have it spin the forward and backward is to mount the wheel beside a servo that is on its side, so its small "wheel" will turn the bigger wheel, to keep it stable, i could cut some ping-pong balls in half and mount them to the bottom of the box.)EM_9g.jpg

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Hey whats that servo mechanism do there?
The servo duhicky will be used to open and close little arms, i havent made the arms yet though, so at this point it isnt really anything.... However, i will try to get some arms mounted tonight

Are you comfortable with a soldering iron? You can modify servos for continuous rotation. Info and pictures on how to do it are google-able. This will plug straight into your receiver and all you need are 2x $0.02 resistors (per motor).

Alternatively, you can buy a motor speed controller. But not on $5 a week.