For example, the prompt window on some instrument devices, the temperature and humidity prompt box, the device running status monitor, and the prompt screen of the counting device all have LCD figures. In-Depth Review of the GeeekPi I2C LCD 2004: A Maker's Gem Explore the GeeekPi I2C LCD 2004 display module's features, benefits, and real-world applications. Perfect for DIY and IoT projects The 1602 uses a standard 16-pin interface, and our display module is a module that provides I2C functionality. The principle of the LCD1602 liquid crystal display is to use the physical characteristics of the liquid crystal to control the display area by voltage, that is, the graphic can be displayed. Features: Easy to use; Less I/O ports are occupied; Support IIC Protocol; The I2C LCD1602 library is easy to get; With a potentiometer used to adjust backlight and contrast; Blue backlight; Power supply: 5v; I2C address is It can be operated as long as it supports the I2C development board. Description: The LCD1602 is an industrial character LCD that can display 16x2 or 32 characters at the same time. Module Affichage Jaune Bleu GeeekPi 2 Pack IIC/I2C 2004 20x4 Character LCD Display Module écran Arduino I2c