Jan

I2Cwrapper. I2Cwrapper is a firmware framework which helps you implement Arduino based I2C target (slave) devices for control of non-I2C hardware. Supports plain Arduinos, ESP8266, ESP32, SAMD, STM32, and ATtiny platforms.

RCWL_1X05. An Arduino library for the I2C mode of ultrasonic distance sensors RCWL-1605, RCWL-1005, and probably HC-SR04P, with some extra info

AccelStepperI2C. deprecated, use https://github.com/ftjuh/I2Cwrapper instead

ePaper-writer. This ESP32 Arduino sketch lets you write drawn and uploaded images, text with simple markdown, and QR-Codes to your e-paper display from a browser-based interface.

ServoController. Control up to 10 servo motors via I2C with this firmware for ATtiny2313 and ATtiny26 originally by Stefan Frings