This code saves you 20% of flash memory when working with stm32 which has like 64kb with lcd having I2C adapter. When you use the normal LiquidCrystal_I2C Library consumes 30% of flash memory while ...

A 10k ohm potentiometer is connected to an analog input. Turning it translates into values in the range [0-1023]. An attached SSR is connected to a water heater. By turning the SSR on and off, it is ...