Klipper is a 3d-printer firmware

U8glib library for monochrome displays, version 2

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on a straight Arduino

Custom firmware for the Xiaomi Thermometers and Telink Flasher

Arduino Audio Tools (a powerful Audio library not only for Arduino)

ESP32 Music streaming based on Squeezelite, with support for multi-room sync, AirPlay, Bluetooth, Hardware buttons, display and more

Play mp3 files from SD via I2S

Firmware files for the Raspberry Pi

Espressif ESP32 Based Smarthome screen for MQTT

Python library for Unicorn pHAT and HAT. 32 or 64 blinding ws2812 pixels for your Raspberry Pi

A WEB Based OBDII Dongle Platform using the ESP32 WROVER Module

A simple stream protocol for controlling arrays of RGB lights.

Three Channel WiFi Relay/Thermostat Board

T3

Arduino library to simplify using Bosch Sensortec's BSEC2 library

WS2812(Neopixel) library for the Nordic Semiconductor 51822 Bluetooth Low Energy ARM SoC.

Arduino library for controlling LEDs and other components on a model railway.

Low cost BLE Advertisements Repeater into Zigbee on TLRS825x

Df1 protocol for Allen-Bradley PLC

Using the LilyGo EPD 4.7" display to show OWM Weather Data

Tutorial

Send audio via bluetooth using A2DP with ESP32 chip

Adding jezura board support to u-boot