The I2C Adapter Module is a compact interface board designed to convert standard parallel LCD displays (16×2, 20×4, etc.) into I2C-compatible displays. Based on the PCF8574 I/O expander IC, this module significantly reduces the number of microcontroller pins required for LCD interfacing, using only two communication lines (SDA and SCL).
Ideal for Arduino, ESP8266, ESP32, Raspberry Pi, and other microcontroller projects, the I2C adapter simplifies wiring, saves GPIO pins, and makes LCD integration faster and more efficient. The onboard potentiometer allows easy adjustment of LCD contrast, while the I2C address can be configured for multiple display setups.
