Adafruit METRO M0 Express

Dev Board
Adafruit METRO M0 Express

Arduino Uno-compatible development board powered by ATSAMD21G18 Cortex M0+ at 48MHz with 256KB flash, 32KB SRAM, 2MB SPI flash, and CircuitPython pre-loaded. Features Arduino shield compatibility and

ATSAMD21G18 ARM Cortex M0+32 KB256 KB25 GPIO
~$25View

Adafruit ItsyBitsy M0 Express

Dev Board
Adafruit ItsyBitsy M0 Express

Compact 3.3V CircuitPython/Arduino board with ATSAMD21G18 Cortex M0+ at 48MHz, 32KB RAM, 256KB flash, 2MB SPI flash, 23 GPIO with 11 analog inputs, RGB DotStar LED, native USB. Measures 36mm × 18mm.

ATSAMD21G18 ARM Cortex M0+32 KB256 KB23 GPIO
~$12View

Adafruit HalloWing M0 Express

Dev Board
Adafruit HalloWing M0 Express

Skull-shaped wearable microcontroller with ATSAMD21G18 at 48MHz, 1.44" 128x128 TFT display, 3-axis accelerometer, light sensor, 4 capacitive touch pads, 2W speaker driver, 8MB SPI flash, and LiPo char

ATSAMD21G18 ARM Cortex M0+32 KB256 KB
~$35View

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