One of my other projects ( BLE MIDI kit dev blog) needs the ability to be powered from USB at 3.3v, as well as charge and discharge a battery, and ideally, not reset when you plug in/unplug the usb.
As I’ve learned recently, this is called power path management. The question about how to do this has come up a few times on the VHS slack. I’ve gone ahead and designed a board that will hopefully satisfy this need and once I figure out any bugs, I’ll incorporate it into my other project.
Throughout the last few days, I’ve been asking a lot of questions on the slack circuit board design channel, and I got some great feedback! One of the silly things that has happened though is I’ve gotten requests (or rather, suggestions) for a change of the USB port, twice. In proper :allthethings: fashion, I’ve instead just added ALL of them to the board.
I present to you, the most ridiculous power path board ever made.
It has MicroUSB, MiniUSB, and USB-C connectors (you really should only solder one, but I won’t stop you if you want to solder more than one). It supports Lithium-Ion charging, and outputs sweet sweet 3.3v… in theory.
I sent it off for fab tonight. If this all goes well, I’ll make this board available as a kit.