@mbrown278 yep, I've done all of that. And the fans work by themselves if plugged directly into the power supply. I even switched fans, nothing seems ...

@mbrown278 Good catch on the reversed wires. Somehow missed that. Unfortunately that doesn't seem to be the problem however. Reconnected the power sup...

@mbrown278 and yes I did cut the trace and checked for continuity.

Hi, no problem, thanks for trying to help. Here is the picture: I cut the dc jack off of an old 12v 4a laptop power supply I had lying around bec...

Followed all the steps and tried to get this to work today - to no avail. I have the motor shield rev3, and none of the LEDs ever light up. It has a 1...