LCD1602 LCD Keypad Shield Blue Backlight Display Module

LCD1602 LCD Keypad Shield Blue Backlight Display Module

The LCD1602 Keypad Shield features a 16×2 character display with blue backlight, perfect for Arduino projects. This shield integrates multiple buttons for menu navigation, making it ideal for user interfaces in DIY electronics and embedded systems.

Specifications

• Display Type: 16×2 Character LCD (1602)
• Display Color: Blue Backlight with white text
• Backlight Control: Yes (through pin control or solder jumper)
• Operating Voltage: 5V (Supplied by Arduino)
• Driver IC: HD44780 or compatible
• Interface Type: Parallel (uses 4-bit or 8-bit mode)
• Keypad Buttons: 6 (UP, DOWN, LEFT, RIGHT, SELECT, RESET)

Electrical Characteristics

• Working Current: Typically around 1 mA (without backlight), ~15 mA (with backlight)
• Operating Voltage: 5V DC
• Backlight Current: 120-160 mA (with backlight)

Keypad Details

• Buttons: 6 buttons (5 for user input, 1 for reset)
  • Pin Assignments: Analog pin A0 (for UP, DOWN, LEFT, RIGHT, SELECT), Reset pin for the RESET button
  • Button Values (Analog A0):
    • RIGHT: 0
    • UP: 144
    • DOWN: 329
    • LEFT: 505
    • SELECT: 742
    • No Button Pressed: 1023
• Analog Input Resolution: Uses analog input A0 to detect which button is pressed

Pin Connections

• Pin 4: RS (Register Select)
• Pin 5: RW (Read/Write) – Typically grounded for write-only operation
• Pin 6: EN (Enable)
• Pin 11: D4 (Data bit 4)
• Pin 12: D5 (Data bit 5)
• Pin 13: D6 (Data bit 6)
• Pin 14: D7 (Data bit 7)
• Pin 15: LED+ (Backlight Control)
• Pin 16: LED- (Backlight Ground)

Physical Dimensions

• Size: Approximately 80mm x 58mm x 25mm
• Weight: ~35 grams

Additional Features

• Contrast Adjustment: Potentiometer to adjust the contrast of the display
• Compatibility: Compatible with standard Arduino boards (Uno, Mega, etc.)
• Mounting Holes: For secure attachment to other modules or surfaces

Usage Notes

• By default, the shield uses 6 digital pins (4 for data, 2 for control) and 1 analog pin (A0 for the keypad).
• The contrast can be adjusted using the onboard potentiometer.
• The backlight can be turned on or off by controlling the jumper or using a separate transistor/MOSFET control if needed.

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