Turning problems, we need suggestions PLZ

[spears312]

Orignally posted by: mechanicalbrain
if you have two wheels on each side connected to a single gear box and your robot is rectangular the wheals will fight each other when turning. its part of the reason car wheels swivle when turning.

Actually, we had a 4 wheel drive train with two wheels on each side, both pairs attached to a AM gear box, and we never had any problems with our turning.

Anyway, Oumonkey, hopefully you will be able to work it out through code. You mentioned something about already lifting up the robot and trying to turn it and the wheels seemed to move in the turning fashion (one side forward, the other backward for tank drive like motion), did they not? If so, and it still doesn't seem to work, try and see if you can measure the speed of the wheels on each side of the robot. Make sure they are going at the speeds you want them to. If not, that may be your problem, possibly caused by a lack of power to the slower motors, a chain problem, a motor problem, or even still be a programing problem.
But, thats just my $.02