LCD screen can display 2-lines x 16-characters, working voltage: 5V; to come with a potentiometer, which is applied to adjust backlight and contrast.
Less I/O ports are occupied, only four - VCC, GND, SDA (serial data line), SCL (serial clock line), how to wire: GND—GND; VCC—VCC; SDA—A4; SCL—A5, LCD display module blue with white color.
Support IIC protocol. The I2C LCD1602 library is provided, so you can call it directly used to adjust backlight and contrast.
Application: LCD module is applied to display characters, letters, numbers, real time clock and temperatur.
1602 LCD display with I2C serial interface is compatible with for Arduino and Raspberry pi, display function: LCD display with I2C serial interface can be applied to display real time clock, temperature, humidity and so on.