robot turns to the left?

[rdoglivin]

Originally Posted by mklinker

Four motors or two? If 4 one motor may not be getting power and/or PWM signal. Check for a reversed PWM cable.

Four motors,we found out the arcade drive is the problem by switching outputs on the side car from 1,2,3,4 to,4,3,2,1 and the problem switched so the bot turns to the right going forward and the left going back does any one have experience with arcade drive not working any suggestions?