Open-source keyboard firmware for Atmel AVR and Arm USB families
UPDI programmer software for Arduino (targets Tiny AVR-0/1/2, Mega AVR-0...
EX-CommandStation firmware from DCC-EX. Includes support for WiFi and a ...
Atmel AVR: development platform for PlatformIO
A debug interface for AVR-based embedded systems development on GNU/Linux.
Arduino-compatible MCU firmware code for sensor-, telemetry-, and gatewa...
TinyCore boards / attiny 1 series Core, Arduino IDE Core, targets ATtiny...