Hi, Yes, the J4 driver hardware (DM320T stepper driver) was/is the problem. The Enabled state is reversed. To test if yours is this way simply ...

@emil Hi Emil, The J4 driver is different from the others. But I did set the DIP switches on one to match J4 and tried it. The J4 motor did mo...

@chris-annin Thanks. Yeah we hooked up an oscilloscope to check things out. Everything coming out of the Teensy is fine. And 4 of the motors are work...

Hi, thanks. We hooked up an oscilloscope earlier today and believe we have tracked down the problem to two of the stepper drivers. The Teensy seems fi...

Thanks, Joseph! Excellent job with a graphic explanation. Looking forward to part 2!