Datasheets

• ATSAMD21 Datasheet (the main chip on the Feather M0)
• Fritzing object in the Adafruit Fritzing Library
• EagleCAD PCB files in GitHub

Note AREF in the diagram should be marked PA03 not PA02

Firmware

Feather M0 Bootloader - You'll need to program it in using an ST-Link, JLink or other SWD-capable programmer. HEX available in the github repo

Schematic

Click to enlarge

Fabrication Print

Dimensions in inches