Wheel Starting Early

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i'm working on school project right have build line following robot using arduino uno, , h-bridge , gearbox. when run basic code on our car make wheels spin, 1 of wheels starts before other 1 , runs 2 second before other 1 kicks in. w have checked code, gearbox, changed wires , pretty sure wiring correct. used our wiring source http://hardwarefun.com/tutorials/creating-robots-using-arduino-h-bridge. appreciated.

please read "how use forum" post , follow directions.


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Wheel Starting Early


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