Arduino

LVGL is a free, full-featured embedded UI library for devices from small MCUs to 3D-capable MPUs, enhanced by LVGL Pro, a professional editor and tooling.

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, Serial or KNX. Full documentation at

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

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.

Arduino core for the ESP32 family of SoCs

Affordable WiFi hacking platform for testing and learning

Arduino IDE 1.x

JavaScript Robotics and IoT programming framework, developed at Bocoup.

How to be low-level programmer

A suite of WiFi/Bluetooth offensive and defensive tools for the ESP32

Open-source vacuum robot cleaner

Your Gateway to Embedded Software Development Excellence 👽

Golang framework for robotics, drones, and the Internet of Things (IoT)

Tiny data-over-sound library

The FastLED library for colored LED animation on Arduino. Please direct questions/requests for help to the FastLED Reddit community: http://fastled.io/r We'd like to use github "issues" just for tracking library bugs / enhancements.

ESP8266 WiFi Connection manager with web captive portal

Open-source telemetry dashboard. Supports UART, BLE, MQTT, Modbus, CAN Bus and more.

📟 JSON library for Arduino and embedded C++. Simple and efficient.

Let's upgrade cheap off-the-shelf robotic mowers to modern, smart RTK GPS based lawn mowing robots!

U8glib library for monochrome displays, version 2