STM32 I2C LCD Library (HAL-Based) This is a lightweight and portable library to interface HD44780-compatible LCD modules using an I2C backpack (PCF8574) with STM32 microcontrollers. It is written ...

In the Discord channel was mentioned that the I2C bus does not work for the STM32 board in Arduino mode. There is more than one problem: The local files for the I2C LCD display with "Wire2" do no ...

Reference circuit diagram of an Arduino-compatible LCD backpack is shown below. What follows next is information on how to use one of these inexpensive backpacks to interface with a microcontroller in ...

Only two wires can be used from the microcontroller while the I2C bus can handle up to seven I2C LCD interfaces. An Arduino, Microchip PIC or any microcontroller with built-in or bit-banged I2C ...

[Johngineer] found himself in need of an I2C sniffer, but didn’t have one available. Necessity is the mother of invention, so he put together this I2C sniffer sketch for Arduino. The arduino … ...