Picar B Motor Hat Schematic?

1594507930

Greets!

Is there a schematic available for the Picar B Motor Hat? I think I fried mine with an honest mistake. I made a DEANS T cable to JST XHP 3 pin connector and lined up the colors of the wires, totally not thinking that the premade open-end JST cables I bought had the colors reversed. I plugged in and poof... smoke. Only for about half a second, but it was enough to raise a trace on the board. To be honest, I was surprised that there was no polarity protection designed into the board, but it certainly was my fault.

So I ordered a new board from you and rushed it DHL, but I would like to try to fix the damaged board myself if I can. A schematic would sure help. Is there any diode protection on the devices on the board?

My Pi 4 is fine by the way. It has protection on the power rails.

Let me know what you can do. I cannot wait to get this thing up and running!! Have a great day!

1597721285

Here is a file. Pls refer to it.