ACE 6760 IIC/I2C Serial Interface Adapter Board for Arduino 1602 LCD Module

This IIC Serial I2C LCD Adapter Board, can be connected to a standard HD44780 compatible 16×2 or 20×4 character display module that supports 4-bit mode. This board has a PCF8574 I2C chip that converts I2C serial data to parallel data for the LCD display.

The I2C address is 0x3F by default but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one its own address). IO port of Arduino control board is only 20, so IO ports is not enough for many sensors, SD card, relay modules. The original 1602 screen need 7 IO ports to drive up, and this module can save up to 5 IO ports. With this I2C interface module, you will be able to transfer data via only 2 wires. If you already have I2C devices in your project, this LCD module actually cost no more resources.