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

Ferret is a free software lisp implementation for real time embedded control systems.

AVRDUDE is a utility to program AVR microcontrollers

T12 Quick Heating Soldering Station

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

Electronic Lead Screw for metal lathe

Software for USB-connected relays with HID interface. See the WIKI for more info.

Tiny Software Protocol for communication over UART, SPI, etc

Arduino TM16xx library for LED & KEY and LED Matrix modules based on TM1638, TM1637, TM1640 and similar chips. Simply use print() on 7-segment and use Adafruit GFX on matrix.

Collection of AVR Programmers and Accessories

Collection of cartridges, adapters, and replacements for the Commodore C64

Minimal I2C master routines for all AVR microcontrollers.

Small version of the famous component tester from mikrocontroller.net

Fast Graphics Library for Attiny85 and SSD1306 over I2c

FlashForth development

Arduino library to read VCC supply level without external components

Bare ATmega 8/168/328 microcontrollers with the Arduino IDE.

Source code for the popular SwinSID SID replacement

C++ platform to build Arduino and AVR projects. Rationale is size and speed optimization.

The replacement board for the AY-3-8910/AY-3-8912/YM2149F sound chip.

DIY GPS GSM vehicle tracker based on SIM808 module and ATMEGA328P

Parallel EEPROM Programmer for 28C64B and 28C256

This is simple GPS vehicle tracker base on SIMCOM SIM7000E/G/A module. Works for GSM/LTE-M networks around the globe

Collection of AVR Development Boards

A really simple, non-preemptive task scheduler.

3 servos, 10 dollars hexapod

Free pascal AVR microcontroller projects

Slow down the server fan speed whilst still allowing extra cooling when needed and shutdown in case of fan failure

AVR registers, interrupts, progmem and peripheral support in nim!

Header-only library for bare metal hardware programming in C with a pleasant generic style.