Thread: Robot doesn't drive straight
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Unread 08-02-2006, 00:40
KenWittlief KenWittlief is offline
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Re: Robot doesn't drive straight
definately reset the victor calibration if its off by 40%. The proceedure is simple, you push the little recessed button until the LED blinks, then you apply full forward, full reverse, then back to neutral. The exact sequence is in the manual - best to look it up and get it right the first time.

Its also possible your drive train on one side is not spinning freely. One way to check this is with a clamp-on amp meter (DC version). The current draw at full speed with the wheels up is a good indication of the friction in the drive system

but you also need to make sure something is not loading up a bearing when the robot is on the floor.

The motors do spin at slightly different speeds in forward vs reverse. If you want the robot to go perfectly straight you will need to tweak the numbers drive one motor more than the other - but it should not be off by 40%.