SOLVED: Removed USB extension cable, replaced with a longer 1 piece USB cable. Swapped over power plug from a 4 way to straight into the wall. It now ...

I'm not sure it is a faulty PSU... Working fine on Bench PSU Not working fine on two different 12v 3a & 5a adapters, one was a new 12v/5a ada...

Thank you for your help! It was a faulty PSU! I was using an old 12V 3A PSU and 12V server fan with a max draw of 1.2a. Swapped over to a reliable P...

Tried a new Arduino, MotorShield, USB cable and ports and it still disconnects, progressively gets worse.. [2021-06-05 21:21:21,359] INFO - Conn...