Affordable 20x4 LCD with Blue Backlight Boosts Electronics Projects

For electronics enthusiasts and engineers seeking reliable display solutions, the 20x4 character LCD with blue backlight emerges as a versatile option for various microcontroller applications. This display module combines functionality with affordability, offering clear visibility and broad compatibility.

The display features a 20-character by 4-line format with 5x8 dot matrix characters. Its blue backlight provides high contrast with white characters, ensuring readability in different lighting conditions. Key specifications include:

• Interface: Parallel (compatible with HD44780 standard)
• Controller: AIP31066
• Viewing direction: 6 o'clock orientation
• Operating voltage: 5V DC
• Temperature range: -20°C to +70°C
• Dimensions: 98.00mm (W) x 60.00mm (L) x 13.20mm (H)

The display module demonstrates broad compatibility with popular microcontroller platforms including Arduino, Raspberry Pi, STM32, and various 8-bit architectures (8051, PIC, AVR). In 4-bit mode, it requires only 7 general-purpose I/O pins for connection, conserving valuable microcontroller resources.

Engineers will appreciate the display's wide viewing angle and high contrast ratio. The module operates reliably across an extended temperature range, making it suitable for industrial applications. Its compact footprint allows for integration in space-constrained designs.

• Industrial equipment: Monitoring systems and control panels
• Educational projects: Embedded systems development
• DIY electronics: Home automation interfaces and data loggers
• Prototyping: Quick visualization of sensor data and system status

The use of the common AIP31066 controller simplifies development, with numerous code examples and documentation available. The standard HD44780 compatibility ensures straightforward integration with existing codebases and libraries.

For projects requiring clear alphanumeric display without graphical complexity, this 20x4 LCD module presents a cost-effective solution that balances performance with ease of implementation.