The Adafruit Feather M0 Express was one of the first development boards designed for CircuitPython by Adafruit. Unlike the original Feather M0 Basic, it added a NeoPixel status LED and external 2MB SPI Flash for storing CircuitPython code.
It is a great entry into the Feather ecosystem with CircuitPython. However, it is now out performed by the Feather M4 Express which has a faster microcontroller with more RAM. The additional RAM allows CircuitPython to load more code all at once than this Feather M0 Express can.
This is the latest stable release of CircuitPython that will work with the Feather M0 Express.
Start here if you are new to CircuitPython.
Built-in modules available: _pixelbuf, analogio, audiobusio, audiocore, audioio, board, busio, digitalio, displayio, gamepad, math, microcontroller, neopixel_write, nvm, os, pulseio, pwmio, random, rotaryio, rtc, storage, struct, supervisor, terminalio, time, touchio, usb_hid, usb_midi
This is the latest unstable release of CircuitPython that will work with the Feather M0 Express.
Unstable builds have the latest features but are more likely to have critical bugs.
Built-in modules available: _pixelbuf, analogio, audiobusio, audiocore, audioio, board, busio, digitalio, displayio, errno, gamepad, math, microcontroller, neopixel_write, nvm, os, pulseio, pwmio, random, re, rotaryio, rtc, storage, struct, supervisor, terminalio, time, touchio, usb_hid, usb_midi
Every time we commit new code to CircuitPython we automatically build binaries for each board and language. The binaries are stored on Amazon S3, organized by board, and then by language. Try them if you want the absolute latest and are feeling daring or want to see if a problem has been fixed.
All previous releases are listed on GitHub, with release notes, and are available for download from Amazon S3. They are handy for testing, but otherwise we recommend using the latest stable release. Some older GitHub release pages include the same binaries for downloading. But we have discontinued including binaries as assets on newer release pages because of the large number of files for each release.
Latest version: v3.13.0
The bootloader allows you to load CircuitPython, Makecode, and Arduino programs. The bootloader is not CircuitPython. You can check the current version of your bootloader by looking in the INFO_UF2.TXT file when the BOOT drive is visible (FEATHERBOOT, CPLAYBOOT, etc.).
To update, first save the contents of CIRCUITPY, just in case. Then double-click the reset button to show the BOOT drive. Drag the update-bootloader .uf2 file to the BOOT drive. Wait a few tens of seconds for the bootloader to update; the BOOT drive will reappear. Check INFO_UF2.TXT to verify that the bootloader version has been updated. Then you will need to reload CircuitPython.