This is a simple project to interrupt the power of a USB cable
First board iteration is available on Tindie: USB micro wedge
Second board iteration is also available on Tindie: USB power micro wedge (5V programmable)
Limited quantities! While supplies last!
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.
George
Stevenski8
This project made me curious what types of commercial products exist for switching off and on USB power.. after some digging i found https://github.com/mvp/uhubctl - turns out a couple of USB hubs has software switchable power functionality built into the chipset!