Making a Vehicle Drive Straight

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dear arduino forum members,

i building robot purpose of driving straight distance. using arduino uno adafruit motor shield.  problem encountering robot refuses drive straight. veers off left, , curves right.

i have tried adjusting speed of each motor individually, strangely has not been avail. first time ran robot, curved right. lead me try making left motor slower. did this, , experimented variety of values, started turning left. then, made speed of motors equal, again, , robot curved left.

i have no idea causing this, or how fix it. advice appreciated.

sincerely,

trin1709

i'm sorry, forgot say:
i'm using  these dc motors: https://www.sparkfun.com/products/13302


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Making a Vehicle Drive Straight


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