I2C LCD Backpack Module (PCF8574) for 16x2/20x4 Displays

I2C LCD backpack module based on the PCF8574 chip, allowing easy connection of LCD displays with only 2 data lines.

• PCF8574 I/O expander
• Reduces wiring to SDA & SCL
• Compatible with 16x2 and 20x4 LCDs
• Adjustable contrast via onboard potentiometer
• Ideal for Arduino, ESP8266, ESP32 projects