Gorillacell Module 005: 16x2 LCD
Table of Contents
LCD stands for Liquid Crystal Display. It utilizes the properties of liquid crystals to produce visible characters or symbols. Since an LCD does not emit light by itself, a backlight is often required to make the display readable, especially in low-light conditions.
The Gorillacell ESP32 Development Kit comes with one (1) LCD module. The LCD is driven by an HD44780 controller, which is interfaced through a PCF8574 I/O expander to simplify wiring. The PCF8574 communicates using the I2C serial communication protocol.
BASIC INFORMATION
| Device | Category | Interface | Chipset | Description | |----------|--------------|------------|---------|----------------------| | Output | Display Cell | Serial I2C | PCD8574 | I2C = 0x20 |PINOUT
It has 4 pins which are
- GND - for the ground pin,
- VCC - for the supply voltage,
- SDA – for the I2C serial data pin, and
- SCL – for the I2C serial clock pin.
The LCD can be access through I2C address 0x20.
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