Adafruit Feather M0 Development Boards

The Feather M0 is a range of development board from Adafruit. They are powered by the Atmel ATSAMD21G18 ARM Cortex M0 processor clocked at 48 MHz with 3.3 V logic. This board features the same chip as is in the Arduino Zero (RS 883-7383). It has 256K of flash (8x more than the Feather 32u4 range) and 32K of RAM (16x). The Feather M0 is designed for low power, portable projects.

There is a dedicated connector for 3.7 V Lithium batteries. The built-in battery charging circuit enables you can use to measure and monitor battery levels. Battery and USB cable not included.

This chip has built-in USB so it has USB-to-serial programming & debug capability so no need for an FTDI-like chip.

Supplied fully assembled and tested, with a USB bootloader that lets you quickly use it with the Arduino IDE.

Adafruit Feather M0 WiFi Board

The Adafruit Feather M0 WiFi has all the basic features shared by the Feather M0 range together with a certified WiFi module. The Atmel ATWINC WiFi model is 802.11bgn-capable, Soft-AP, SSL TSL 1.2 support, built-in low-power management and rock solid performance.

This module works with 802.11b, g or n networks and supports WEP, WPA and WPA2 encryption. You can connect to your own WiFi network or create your own with "Soft AP" mode, where it becomes its own access point.

You can clock it as fast as 12 MHz for speedy, reliable packet streaming and scanning/connecting to networks is fast, just a few seconds.

It only uses small amount of power so for battery operated projects, this is the go to board.

- 51 x 23 x 8 mm / 2.0" x 0.9" x 0.28" without headers
- 4.6 g
- Atmel ATSAMD21G18 @ 48 MHz with 3.3 V logic/power
- 256 KB Flash and 32 KB RAM (No EEPROM)
- 32.768 kHz crystal for clock generation & RTC
- 3.3 V regulator with 500 mA peak current output
- USB native support, comes with USB bootloader and serial port debugging
- 20 GPIO pins
- Hardware Serial, hardware I²C, hardware SPI support
- PWM outputs on all pins
- 6 x 12-bit analogue inputs
- 1 x 10-bit analogue output (DAC)
- Built in 100 mA LiPo charger with charging status indicator LED
- Pin #13 red LED for general purpose blinking
- Power/enable pin
- 4 mounting holes
- Reset button