Varying DC Motor speed causing unusual outcome

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recently, have encountered problem mobile application controls dc motors. dc motors not follow have programmed. example, when set delay(500), provides me delay longer have programmed.

after troubleshooting, realized problem lies motor speed have set. instead of setting motor @ full speed (motor->setspeed(255);), set motor @ half speed (motor->setspeed(127);).

does know possible reasons this? suspecting dc motors need higher requirement voltage if set motor @ full speed. however, when increase voltage input arduino, gives me same problem.

thanks in advance! :)

without knowing how have things connected, motor using, how current motor draws, power supply using, whether arduino , motor have separate power supplies, it's bit difficult give suggestions!!!!!

paul


Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Varying DC Motor speed causing unusual outcome


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