The LCD 20×4 Green Backlight Display offers four lines of 20 characters each with a bright green backlight. It provides more display area than 16×2 models while maintaining HD44780 compatibility for easy Arduino integration.
Key features
- 20 characters x 4 lines display area
- Green LED backlight for excellent visibility
- HD44780 compatible controller
- 5×8 dot matrix character font
- 4-bit or 8-bit parallel interface
- Adjustable contrast via potentiometer
- Large display area for complex data
Good to know
- Uses same library as 16×2 – initialize with (20, 4) instead of (16, 2)
- Requires 6-7 GPIO pins without I2C backpack
- I2C backpack strongly recommended for pin-constrained projects
- Green backlight typically draws less current than blue
- Large size may not fit all enclosures – verify dimensions