Not sure I included the code in the post to run 2 motors at once. How did you modify it Chris?
Thanks Bryan! Yes, the overcurrent detection works with 12v. Just connect a motor coil to A0 thru a 5k resistor. For some unknown reason I did not need a resistor voltage divider. For voltages over 12v this may be needed. My explanation is simple. It detects a change in torque using the simple code I've included. The jumper needs to be present for normal operation.
The Github link above is the most current tested version.