Fluff M0

by Radomir Dopieralski

Image of Board

A minimal CircuitPython board compatible with the Feather M0 Basic. Everything that is non-essential has been removed, and the smallest possible chip is used.

Project page on hackaday.io

Here are some handy specs!

  • Measures 2.0” x 0.9” x 0.28” (51mm x 23mm x 8mm) without headers soldered in
  • ATSAMD21E18 @ 48MHz with 3.3V logic/power
  • 256KB of FLASH + 32KB of RAM
  • 3.3V regulator with 500mA peak current output
  • USB native support, comes with USB bootloader and serial port debugging
  • You also get tons of pins - 23 GPIO pins
  • Hardware Serial, hardware I2C, hardware SPI support
  • 8 x 12-bit analog inputs
  • 1 x 10-bit analog ouput (DAC)
  • Yellow LED for general purpose blinking
  • 4 mounting holes

Differences from Feather M0

  • No battery charger
  • No crystal
  • No external flash
  • No reset button
  • No enable pin, instead you get another GPIO pin
  • Two additional analog pins (AREF and A6)
  • LED is on a separate, dedicated pin, not on D13
  • USB-C PCB socket

CircuitPython 6.0.0-alpha.3

This is the latest unstable release of CircuitPython that will work with the Fluff M0.

Unstable builds have the latest features but are more likely to have critical bugs.

Release Notes for 6.0.0-alpha.3

Absolute Newest

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.

Past Releases

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.