I have an Arduino Uno running a single stepper motor using this externally powered motor shield:
*How can I determine on the Arduino side if there's power to the motor shield? *
I'm definitely a novice, so go easy on me. In my simple mind, I would love it to be as simple as hooking up a wire from the motor shield to the Arduino and reading high voltage on that pin, but given that the voltage to the motor shield is more than 5v, I'm a little worried about frying my uno.