Arduino for STM32

@Billie34 There's no such thing as "I2C pins are often mapped to PB10 and PB11". Each MCU may have different pins used for "same" interface. Read MCU datasheet or board pinout to find which pins are used for which interface. Also, there is no WeActStudio STM32F411 MCU. STM32 MCU...

One of my main interests in this endeavor is the keypad plugin, which I'm eager to test out on my network. I currently use a Blackpill development board with a WeActStudio STM32F411 MCU. I2C pins are often mapped to PB10 and PB11, but PB11 on Blackpill boards is not routed to headers, which is my is...