Adafruit

Select your Adafruit AVR board during project setup. These boards use Microchip AVR microcontrollers, but Adafruit designs the boards, pin mappings, and board-specific hardware. Include the exact board revision and build environment so Embedder uses the correct configuration and programming command. Run /init so Embedder records your build and programming commands in EMBEDDER.md. See Flashing firmware.

Check the project setup picker for current availability. Flashing and debugging depend on the tools and connections supported by your board. The Gemma and Trinket entries below are the AVR boards. Their M0 versions use a different MCU and aren’t in these listings.

Catalog platforms

Board family	Platforms
Feather 32u4	`Adafruit Feather 32u4 Adalogger`, `Adafruit Feather 32u4 Basic Proto`, `Adafruit Feather 32u4 Bluefruit LE`, `Adafruit Feather 32u4 RFM69`
Other AVR boards	`Adafruit ATmega32u4 Breakout`, `Adafruit Gemma`, `Adafruit Metro Mini`, `Adafruit Pro Trinket`, `Adafruit Trinket`

For bare AVR microcontrollers and Microchip development kits, see Microchip AVR.

Last modified on October 13, 2026

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Catalog platforms

​Catalog platforms

Catalog platforms