What Types of LCDs Are Compatible with The PCF8574 I2C Interface? Understanding the PCF8574 I2C LCD ModuleThe PCF8574 is an I2C I/O expander that allows you to control multiple devices using only two wires: SDA (data line) and SCL (clock line). This is particularly useful when working with LCD displays, as it reduces the number of pins required on your microcontro
