I have an unusual problem using a Mega with a Sabertooth motor driver. The motor driver runs a couple of DC brushed motors. Everything works fine until I plug in a USB cable to the Mega, whether or not the other end of the cable is plugged into a PC or not. Then the motor driver, which normally h…

Erratic Mega Output when connected to USB cable

JBornstein90 November 6, 2021, 12:49am 2

Post a diagram of the connections / code using the code tags.

I've had this issue before too