Let's Make Robots!


Quick question on undrstanding a diagram

Hi friends,

I am making my first circuit from a diagram. I have made it all, but cannot figure out how to wire up the potmeter shown in red.

It has 3 wires, where do they each hook up to?


NEED HELP! with my motor controller

Hello guys. I'm creating a RF controlled 2.5kg sumo bot. I'm a mechanical engg. student and so don't have much knowledge in electronics.

Basically I need to create a 10Amp motor driver for driving 2 12V dc motors,10A each using relays.
Buttons on remote control:

2           3

1-Move Forward
2-Rotate Anticlockwise
3-Rotate Clockwise

I'm planning to use these schematics for radio controlling

A Circuit I cannot understand

I have a circuit digram but i cannot understand it. can anyone help me explain?