Adafruit Feather M0 Express - Designed for CircuitPython

Key Features:

• ATSAMD21G18 @ 48MHz with 3.3V logic/power
• 256KB of FLASH + 32KB of RAM
• Easy reprogramming
• Built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip

This is the first Feather that is specifically designed for use with CircuitPython! CircuitPython is our beginner-oriented flavor of MicroPython - and as the name hints at, its a small but full-featured version of the popular Python programming language specifically for use with circuitry and electronics.

That doesn' t mean you cant also use it with Arduino IDE! 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. The Feather M0 Express uses the extra space left over to add a Mini NeoPixel, 2 MB SPI Flash storage and a little prototyping space. You can use the SPI Flash storage like a very tiny hard drive. When used in CircuitPython, the 2 MB flash acts as storage for all your scripts, libraries and files. When used in Arduino, you can read/write files to it, like a little datalogger or SD card, and then with our helper program, access the files over USB.

Item Specifics
Fully assembled and tested
1 - small header
No EEPROM
32.768 KHz crystal for clock generation & RTC
3.3V regulator with 500mA peak current output
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 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
Size: 51.0 mm x 22.8 mm x 7.3 mm / 2.0" x 0.9" x 0.3"
Weight: 4.7 g / 0.2 oz
Lipoly battery and USB cable not included
CircuitPython does not come preloaded