Proto Feather M0 32-bit - compatible with Arduino - Adafruit 2772*
A small module with a 32-bit microcontroller ARM Cortex M0 ATSAMD21G18 known from Arduino Zero. Feather is designed for portable projects. On board is a microUSB connector, through which the system can be programmed via the Arduino IDE. There is also place for other elements, such as buttons or sensors.