Adafruit HalloWing M0 Express

Adafruit HalloWing M0 Express is a skull-shaped ATSAMD21 board that can be used for a wearable, badge, development kit, or engine for cosplay or prop. The HalloWing features a 1.44" sized 128x128 full-color TFT. The default example code has a spooky eye demo running but can be used to display anything in color. Four fang teeth below the display provide analog/capacitive touch inputs with big alligator-clip holes.


  • ATSAMD21G18 @ 48MHz with 3.3V logic/power - 256KB of FLASH + 32KB of RAM
  • 8MB of SPI Flash for storing images, sounds, animations
  • 3-axis accelerometer (motion sensor)
  • Light sensor, reverse-mount so that it points out the front
  • Mono Class-D speaker driver for 4Ω to 8Ω speakers, up to 2W, with volume potentiometer
  • LiPoly battery port with built-in recharging capability
  • USB port for battery charging, programming, and debugging
  • Two female header strips with Feather-compatible pinout
  • JST ports for Neopixels, sensor input, and I2C (Grove connector compatible)
  • 3.3V regulator with 500mA peak current output
  • Reset button
  • On-Off switch

Technical Information

  • Product Dimensions: 60.0x51.0x11.0mm / 2.4x2.0x0.4"
  • Product Weight: 17.5g / 0.6oz



Mechanical Drawing - Adafruit HalloWing M0 Express
Gepubliceerd op: 2018-10-15 | Bijgewerkt op: 2022-10-13