Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.

Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.

Your Gateway to Embedded Software Development Excellence 👽

A Toolbox companion for QMK Firmware

All CPU and MCU documentation in one place

ATTiny usb bootloader with a strong emphasis on bootloader compactness.

Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8

embedded-hal abstractions for AVR microcontrollers

ᕲ Duino-Coin is a coin that can be mined with almost everything, including Arduino boards.

Arduino hardware package for ATmega8, ATmega48, ATmega88, ATmega168, ATmega328 and ATmega328PB

Arduino generic menu/interactivity system

T12 Quick Heating Soldering Station

A FreeRTOS Library for all Arduino ATmega Devices (Uno R3, Leonardo, Mega, etc).

Arduino GFX developing for various color displays and various data bus interfaces

modm: a C++23 library generator for AVR and ARM Cortex-M devices

AVRDUDE is a utility to program AVR microcontrollers

An embedded development environment for mcs51/stm8/avr/cortex-m/riscv on VsCode.

Arduino hardware package for ATmega1284, ATmega644, ATmega324, ATmega324PB, ATmega164, ATmega32, ATmega16 and ATmega8535

A lightweight, secure, easy-to-use crypto library suitable for constrained environments.

Arduino core for the tinyAVR 0/1/2-series - Ones's digit 2,4,5,7 (pincount, 8,14,20,24), tens digit 0, 1, or 2 (featureset), preceded by flash in kb. Library maintainers: porting help available!