LCD 2004 Module

The LCD 2004 module is a 20×4 character Liquid Crystal Display that provides a simple and effective way to display text, numbers, and custom characters in embedded systems and microcontroller projects. It features an I2C interface for easy integration and communication, reducing the number of required GPIO pins. The backlit display ensures readability in various lighting conditions.

Key Features:

• 20 characters by 4 lines display
• I2C interface for easy connectivity
• Blue backlight with white text
• Adjustable contrast via a potentiometer
• Low power consumption
• Compatible with various microcontroller platforms (e.g., Arduino, Raspberry Pi)

Technical Specifications:

• Display Type: Character LCD
• Characters: 20 characters x 4 lines
• Interface: I2C
• Operating Voltage: 5V
• Backlight: Blue with white text
• Dimensions: Approximately 98mm x 60mm x 12mm
• Viewing Area: 76mm x 25.2mm
• Character Size: 4.84mm x 9.66mm
• Controller: HD44780 or equivalent

Applications:

• Embedded systems
• Microcontroller projects
• Industrial control displays
• Home automation systems
• Instrumentation panels
• Educational and learning projects

Usage:

1. Connection:
   • Connect the VCC and GND pins to the 5V and GND of the microcontroller.
   • Connect the SDA (data) and SCL (clock) pins to the corresponding I2C pins on the microcontroller.
2. Programming:
   • Use an appropriate library (e.g., LiquidCrystal_I2C for Arduino) to initialize and control the display.
   • Write code to display text, numbers, and custom characters as needed.
3. Adjust Contrast:
   • Use the onboard potentiometer to adjust the contrast of the display for optimal readability.
4. Backlight Control:
   • Control the backlight through software if supported by the library or manually via the backlight pin.

Caution:

• Ensure the power supply voltage is 5V to avoid damaging the module.
• Handle the module carefully to avoid damage to the display and the I2C pins.
• Verify the I2C address and adjust in the code if necessary, as some modules may have different default addresses.

Datasheet:
For detailed technical specifications, refer to the LCD 2004 Module Datasheet.