I bought a motor driver shield for my UNO. It has a bunch of switches to choose where the driver gets its 5V from, where the motor voltage comes from etc. I hooked up one 9V supply to the Arduino and another to the motor driver (one of the possible configurations according to the driver documentatio…

Uh oh...

nickgammon October 15, 2012, 8:01pm 3

There's the loopback test "sticky" at the head of this forum section.

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