USB wedge - 5V power interruptor

Revision 3 of the board came in and I quickly soldered it together and it works.

I can control the USB port with either a 3.3V/5V MCU!  This should be ideal for automation testing and deploying code.

One other thing I didn't notice with the new PCB design was that the USB A connector had its wiring completely reversed in EasyEDA.  I sourced the components and PCB fab through LCSC and JLCPCB, and they were super helpful in refunding my money for the mistake, even though there were already a couple of other mistakes on the board.

Here we have some bodge wires and some TH components to further test and validate the new design.

In an attempt to bring the PCB cost down, I spun up a new design, and added support for 3.3V to 5V logic toggling of the AP2171.  Too bad I didn't notice the copper pour was messed up when I uploaded my Gerber to the fab.