Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores.

This is the Feather M0 Basic Proto, it has a bunch of prototyping space built right in. We have other boards in the Feather family, check'em out here!

At the Feather M0's heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328 or 32u4) and 32K of RAM (16x as much)! This chip comes with built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip.

To make it easy to use for portable projects, we added a connector for any of our 3.7V Lithium polymer batteries and built in battery charging. You don't need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The Feather will automatically switch over to USB power when its available. We also tied the battery thru a divider to an analog pin, so you can measure and monitor the battery voltage to detect when you need a recharge.

Here's some handy specs!

  • Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in
  • Light as a (large?) feather - 4.6 grams
  • ATSAMD21G18 @ 48MHz with 3.3V logic/power
  • 256KB of FLASH + 32KB of RAM
  • 32.768 KHz crystal for clock generation & RTC
  • 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 - 20 GPIO pins
  • Hardware Serial, hardware I2C, hardware SPI support
  • PWM outputs on all pins
  • 6 x 12-bit analog inputs
  • 1 x 10-bit analog ouput (DAC)
  • Built in 100mA lipoly charger with charging status indicator LED
  • Pin #13 red LED for general purpose blinking
  • Power/enable pin
  • 4 mounting holes
  • Reset button

The Feather M0 Basic Proto has some extra space left over, so we give you a tiny little prototyping area. If you just need to attach a button or sensor, you may be able to skip out on a breadboard and wire it directly on there.

Comes fully assembled and tested, with a USB bootloader that lets you quickly use it with the Arduino IDE. We also toss in some header so you can solder it in and plug into a solderless breadboard. Lipoly battery and USB cable not included (but we do have lots of options in the shop if you'd like!)

Check out our tutorial for all sorts of details, including schematics, files, IDE instructions, and more!


Wanna play with the ARM Cortex M0 chipset?
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How to use MicroPython with boards like the Feather M0 & Arduino Zero!
Using GDB to better understand program state and history.
Create a mad science blacklight test tube rack with fluorescent pigments and ultraviolet LEDs.
How to use a SSD1306 OLED display with MicroPython boards.
How to use the PCA9685 PWM & servo driver with MicroPython!
How to use the PCA9685 DC Motor & Stepper driver with MicroPython!
How to use LED Backpacks & FeatherWings with MicroPython!
How to use Charlieplex LED matrices with MicroPython!
How to write text on any MicroPython display.
Make a MicroPython OLED Watch
3D Print This Adorable Retro-puter
How to draw on a ILI9341 TFT display with MicroPython!
How to draw basic shapes on pixel-based displays with MicroPython!
Part 3: Permanent circuit, 3D printing, and final assembly
Make a Simple JTAG Debugging FeatherWing for the M0
This Cold War-era mystery box's disarm code must be toggled in before the timer reaches zero!
Find out how fast your toy car is.
Level shifters are like little bilingual translators for your electronics!
Learn how to use the LIS3DH accelerometer with CircuitPython!
Learn how to use the MPR121 capacitive touch sensing breakout with CircuitPython!
A Multipurpose Enclosure for Adafruit Feather
Use a high-voltage AC power source to trigger a Feather microcontroller-driven coffee grinder.
Control room lighting & sound with the beat of your heart.
Revisiting the Olde Days of television and radio
NeoPixels and interrupts living in peace and harmony!


SKU AF-2772
Brand Feather

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