Ok there has been a change in plans. I spoke to a friend of mine who will build me a chassis and install the motors as needed.
The only issue is that the servos are now going to be too weak to power the heavier robot.
I have also decided on the microcontroller board Arduino Mega
. It is pretty much the strongest/fastest 8 bit board out there and it has tons of support.
So this brings with it new questions.
1) Can anybody tell me how many operations per second that arduino unit can do. I don't mean cpu calculations, I want to know (if possible) how many sensor signals it can read / motor control signals write per second.
2) I will be using 9v motors, can anybody suggest good speed/voltage controllers which would interface between the 4 motors and the arduino. Simpler (ie: plug & play) regulators preferred.