20x4 yellow LCD display with high visibility, ideal for displaying larger amounts of data in embedded systems and DIY projects. Provides clear text on a vibrant yellow background, offering easy integration with Arduino and other microcontrollers.
LCD 20x4 Yellow
A 20x4 Yellow LCD is a 20-character by 4-line display screen with a yellow-green backlight, commonly used in various embedded systems and electronic projects. These displays use the HD44780 or similar controllers, making them highly compatible with many microcontrollers like Arduino, Raspberry Pi, and other development platforms. They are widely used to display textual information, error messages, status updates, or other system information in a concise, readable format.
The yellow-green backlight makes the display easily visible in a variety of lighting conditions, providing excellent contrast and readability. It is especially popular in industrial and DIY projects for providing real-time feedback and data display.
Specifications:
Display Type:
Technology: LCD (Liquid Crystal Display)
Size: 20 x 4 (20 characters per line, 4 lines)
Backlight: Yellow-green LED
Controller IC: HD44780 or equivalent (standard controller)
Dimensions:
Physical Size: 116 mm x 64 mm x 20 mm (varies slightly by manufacturer)
Character Size: 3.0 mm x 5.0 mm per character (typical)
Voltage:
Operating Voltage: 5V DC (Common for microcontroller circuits)
Backlight Voltage: Typically 5V DC (operates alongside the display voltage)
Current Consumption:
Without Backlight: 1-3 mA
With Backlight: 20-40 mA (depends on brightness settings)
Interface:
Communication Interface: 16-pin (for parallel communication) or I2C (for more compact wiring)
Display Characteristics:
Character Format: 5x8 dots (default), 5x10 dots (optional for larger characters)
Contrast Control: Adjustable via a potentiometer (typically 1kΩ)
Operating Conditions:
Operating Temperature Range: 0°C to 50°C
Storage Temperature Range: -20°C to 70°C
Humidity Range: 20% to 80% RH (non-condensing)
Features:
Large Character Display:
With 20 characters per line and 4 lines, the display offers ample space for showing multiple data points, messages, or status updates, making it ideal for various user interfaces.
Yellow-Green Backlight:
The display uses a yellow-green LED backlight, providing good visibility under different lighting conditions. This backlight is often brighter than other colors, improving legibility, especially in industrial environments.
Low Power Consumption:
The LCD consumes minimal power, particularly when the backlight is turned off or dimmed, which is ideal for battery-operated applications.
Standard HD44780 Controller:
Compatible with a variety of microcontrollers and development boards like Arduino, Raspberry Pi, and PIC. The standard controller ensures ease of integration and programming.
Adjustable Contrast:
The contrast of the display can be adjusted via a potentiometer, allowing for optimal visibility based on the ambient lighting.
Multiple Display Modes:
Supports text, special characters, and user-defined characters, enabling the creation of custom icons or symbols.
Durability:
The display is robust and designed for use in a variety of environments, including harsh conditions. Its resistance to environmental factors like humidity and temperature changes makes it suitable for industrial applications.
Simple Wiring:
The display typically uses a 16-pin interface for parallel communication or a 4-pin interface when using I2C for simplified wiring (reducing the number of pins needed on microcontrollers).
Applications:
Embedded Systems:
Ideal for displaying information in embedded systems and DIY electronics projects. The 20x4 LCD is commonly used in microcontroller-based systems for feedback display.
Arduino Projects:
Frequently used in Arduino-based projects for showing real-time data like sensor readings, status messages, or user inputs.
Industrial Control Systems:
Used for displaying real-time data in industrial automation systems, process control, and machine monitoring.
Home Automation:
Perfect for home automation systems, displaying system status, temperatures, humidity levels, or controlling smart devices via a user interface.
Weather Stations:
Popular in weather monitoring stations, displaying live weather data such as temperature, humidity, barometric pressure, and time.
Robotics:
Robotics systems often use 20x4 LCD displays to show diagnostic messages, system status, or sensor data during operation.
Medical Equipment:
Used in medical devices for user feedback, diagnostic information, or to display sensor data like heart rate, blood pressure, or other health metrics.
Test and Measurement Instruments:
Widely utilized in bench-top test equipment, lab instruments, and other measurement tools for displaying readings from sensors or test results.
Consumer Electronics:
Common in devices such as printers, digital clocks, and home appliances, where small, readable text needs to be shown to users.
