LCD1604 16×4 Character LCD Display (Blue Backlight)

The LCD1604 16×4 Character LCD Display (Blue Backlight) is a HD44780-compatible alphanumeric screen that shows 16 characters across 4 lines, giving twice the display area of a standard 16×2 module. It uses a blue background with crisp white text, making it easy to read menus, sensor readings, and status messages.

Key features:

• 16×4 Character Display: Shows four lines of 16 characters each, ideal for menus, logs, or multi-line sensor readouts.
• HD44780-Compatible Controller: Works with the widely supported HD44780 command set and standard Arduino LCD libraries.
• Blue Backlight: High-contrast white-on-blue display for clear visibility in normal lighting.
• Parallel Interface: Connects via an 8-bit or 4-bit parallel interface using the standard 16-pin header.
• I2C Adapter Compatible: Can be paired with a separate I2C backpack to reduce the pin count needed from a microcontroller.
• Wide Operating Voltage: Runs on a standard 5V supply, compatible with Arduino and similar 5V logic boards.

This module is a drop-in upgrade path for projects that have outgrown a 16×2 screen and need more on-screen text.