From my experience, two motors never drive the exact same speed. I need to make a robot that has 2 driving motors and 1 free spinning idle wheel drive in a straight line. Intelligent Robot Car Chassis Kits with Speed Encoder Battery Box I cant figure out a FAST way to do that. I can only tell how far…

Using 2 tachometers and 2 motors, how do I get my robot to drive straight?

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