I am including an Adafruit Feather on a PCB with a propeller several propellers
Adafruit Feather has two power options
: USB or 3.7v/4.2v, 500mAh LiPoly battery.
I would like a technique for powering the Feather that does not involve stumping a bunch of USB cables and soldering about two inches of wire to the board. Or gluing a battery to the board. I notice in the PCB schematic for the Feather
that the BAT pin is connected directly to the positive terminal for their battery.
My idea: Use a 3.7v or 4.2v regulator to power the Feather via the BAT pin. Include a feedback protection circuit. Maybe a brownout detector holding a transistor closed(current going through), listening to the line and disconnecting the regulator when more than 3.7v is detected?
Returning to Spin after two months of not coding micros at all, forgetting to use :=