Hello. I am newbie, i am trying to put a small dc motor working and regulate speed with PWM generated by arduino. The transistor i am using is a bc547c. The problem is that the motor make a strange noise but doesn t spin (no its not damaged). Connected an amp to see the colector current and it inc…

Problem with dc motor

zachwiej September 27, 2012, 9:11pm 2

Try wider pwm pulse(analogWrite() 100-250 ) or maybe try more powerfull transistor

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