In this tutorial we will use one Arduino board with the Blue Pill board that is STM32F103C8 and will communicate with the Arduino board using I2C bus.
![The Full Arduino Uno Pinout Guide [including diagram]](https://i.pinimg.com/originals/b0/4d/04/b04d04c9f12c90a003160501abf1a8f2.png)
