Hello I'm basically controlling a 12v dc motor with a sn754410 motor driver ic to move forwards, pause, and backwards, pause and loop. I followed http://itp.nyu.edu/physcomp/Labs/DCMotorControl . When it is connected to my computer and where the 12v battery is, it runs ok. But when I plug a 9v batter…

Battery Source for Arduino Uno & 1 12v dc motor?

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