{"title":"Adafruit HalloWing M0 Express","handle":"adafruit-hallowing-m0-express","url":"/products/adafruit-hallowing-m0-express","description":"The Adafruit HalloWing M0 Express is a skull-shaped development board built around the ATSAMD21G18 processor. Featuring a 1.44\" full-colour TFT display, a 3-axis accelerometer, a light sensor, a speaker driver, and Feather-compatible headers, it's designed for wearables, badges, cosplay props, and spooky interactive projects.\n\nThe board ships with the UF2 bootloader pre-installed and supports both Arduino and CircuitPython. The 8 MB SPI Flash provides ample storage for images, sounds, and animations — enough for up to 3 minutes of WAV audio. Four capacitive touch pads with alligator-clip holes offer easy interactive input.\n\nKey Features\n\n\nATSAMD21G18 at 48 MHz – 256 KB Flash, 32 KB RAM, 3.3V logic\n\n1.44\" Colour TFT Display – 128×128 pixels, ships with animated eye demo\n\n8 MB SPI Flash – Store images, sounds, and animations\n\n3-Axis Accelerometer – Built-in motion sensing\n\nLight Sensor – Front-facing, reverse-mounted for ambient light detection\n\nMono Class-D Speaker Driver – Drives 4–8 ohm speakers up to 2W, with mini volume pot\n\n4 Capacitive Touch Pads – Analog inputs with large alligator-clip holes\n\nFeather-Compatible Headers – Two female header strips accept FeatherWings\n\nJST Ports – 3-pin connectors for NeoPixels and sensors, 4-pin I²C connector (Grove-compatible)\n\nLiPo Battery Port – Built-in charging via USB\n\n3.3V Regulator – 500 mA peak output\nOn/Off Switch and Reset Button\n\nUF2 Bootloader – Drag-and-drop programming, easy CircuitPython conversion\n\n\nIdeal For\n\nHalloween props and spooky interactive displays\nWearable badges and cosplay electronics\nSound and animation-driven projects\nFeatherWing-compatible development and prototyping\n\n\nPackage Contents\n\n1× Adafruit HalloWing M0 Express – Fully assembled with UF2 bootloader\n\n\n\nNote: LiPo battery not included. A 3.7V LiPo battery (350 mAh or 500 mAh recommended) is required for portable use. The board can also be powered via USB.\n\n\nResources\n\nAdafruit HalloWing Learn Guide\nCircuitPython\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5692,"title":"Default Title","sku":"AF-3900","price":71.62,"on_sale":false,"in_stock":true,"available_quantity":78,"option1":"Default Title"}]}