Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP…

U8glib library for monochrome displays, version 2

An open source cross-platform USB stack for embedded system

Main MiSTer binary and Wiki

🌱💧 An open source DIY soil moisture sensor

Multiplayer Bluetooth controllers adapter for retro video game consoles

Floppy drive emulator for Gotek hardware

Embeddable Linux Kernel Subset - Linux for 8086

SPI LCD graphics library for ESP32 (ESP-IDF/ArduinoESP32) / ESP8266 (ArduinoESP8266) / SAMD51(Seeed ArduinoSAMD51)

M5Stack Arduino Library

Arduino Display Library for SPI E-Paper Displays

Atari 8 bit computers, NES and SMS game consoles on your TV with nothing more than a ESP32 and a sense of nostalgia

A jumperless breadboard

SummerCart64 - a fully open source N64 flashcart

68k Hardware Emulator

Open Source Scan Converter

M5StickC Arduino Library

ESP8266/ESP32/Arduino custom modem<->internet simulator with lots of features

Cartridge for the Commodore 64 that packs a punch

M68K emulation for AArch64/AArch32

PicoMEM Doc and Firmware

M5Core2 Arduino Library

Free Tektronix 4010, 4013, 4014 and 4015 terminal emulator for Raspberry Pi, Linux, macOS (Macintosh) and Windows

System, apps and tooling for the Gigatron TTL microcomputer

A disk operating system for MSX computers, forked from MSX-DOS 2.31

GAL chip programmer for Arduino