The Feather is not designed for external power supplies - this is a design decision to
make the board compact and low cost. It is not recommended, but technically
possible:
Connect an external 3.3V power supply to the 3V and GND pins. Not
recommended, this may cause unexpected behavior and the EN pin will no
longer work. Also this doesn't provide power on BAT or USB and some
Feathers/Wings use those pins for high current usages. You may end up
damaging your Feather.
Connect an external 5V power supply to the USB and GND pins. Not
recommended, this may cause unexpected behavior when plugging in the USB
port because you will be back-powering the USB port, which could confuse or
damage your computer.
CircuitPython
CircuitPython() is a derivative of MicroPython() designed to simplify experimentation
and education on low-cost microcontrollers. It makes it easier than ever to get
prototyping by requiring no upfront desktop software downloads. Simply copy and
edit files on the CIRCUITPY drive to iterate.
CircuitPython Quickstart
Follow this step-by-step to quickly get CircuitPython running on your board.
Download the latest version of
CircuitPython for this board via
circuitpython.org
Click the link above to download the latest
CircuitPython UF2 file.
Save it wherever is convenient for you.
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