Marlin is a firmware for RepRap 3D printers optimized for both 8 and 32 bit microcontrollers. Marlin supports all common platforms. 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.

A FREE comprehensive reverse engineering tutorial covering x86, x64, 32-bit/64-bit ARM, 8-bit AVR and 32-bit RISC-V architectures.

Your Gateway to Embedded Software Development Excellence :alien:

A Toolbox companion for QMK Firmware

All CPU and MCU documentation in one place

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

ATTiny usb bootloader with a strong emphasis on bootloader compactness.

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

AVRDUDE is a utility to program AVR microcontrollers

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

T12 Quick Heating Soldering Station

Arduino generic menu/interactivity system

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

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

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

Source code for the book Real-Time C++, by Christopher Kormanyos

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

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

Arduino (8-bit AVR) simulator, written in JavaScript and runs in the browser / Node.js

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!

PICSimLab - Programmable IC Simulator Laboratory

A light-weight Arduino hardware package for ATtiny13

SAE J1939 protocol free to use for embedded systems or PC with CAN-bus

Start your Arduino projects right out of the box

Faster Arduino compilation CLI. Arduino快速编译工具，小项目提速50%，大项目提速80%! 时间就是金钱，我的朋友!

Easy AVR USB Keyboard Firmware and Keymapper

BACnet Protocol Stack library provides a BACnet application layer, network layer and media access (MAC) layer communications services.