Beschikbaarheid: In voorraad
ItsyBitsy M0 Express has 6 power pins, 23 digital GPIO pins (12 of which can be analog in, 1x analog out, and 13x PWM out). It uses the same ATSAMD21 chip as the Arduino Zero. The board is only 36 mm long by 18 mm wide.
While you can use it with the Arduino IDE, it is shipped with CircuitPython on board.
More information is available on the website of Adafruit.