1602 16×2 LCD Keypad Shield For Arduino Uno Mega
This is a very popular 16×2 LCD Keypad shield for Arduino or Freeduino board. It includes a 2×16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD. Analog Pin 0 is used to read the push buttons.
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₨ 600
In stock
LCD 1602 Keypad Shield for Arduino Uno R3/R4, Mega, Integrated Keypad and Display for Arduino Projects
This is a very popular LCD Keypad shield for Arduino or Freeduino board. It includes a 2×16 LCD display and 6 momentary push buttons. Pins 4, 5, 6, 7, 8, 9 and 10 are used to interface with the LCD. Analog Pin 0 is used to read the push buttons. The LCD shield supports contrast adjustment and backlit on/off functions. It also expands analog pins for easy analog sensor reading and display.
The LCD Keypad shield is developed for Arduino compatible boards, to provide a user-friendly interface that allows users to go through the menu, make selections etc. It consists of a 1602 white character blue backlight LCD. The keypad consists of 5 keys — select, up, right, down and left. To save the digital IO pins, the keypad interface uses only one ADC channel. The key value is read through a 5 stage voltage divider.
Description & Key Features
- 16×2 Display: Features a character LCD (typically blue backlight with white text) capable of displaying 32 characters total (16 columns, 2 rows).
- Keypad Input: Contains 6 pushbuttons: 5 navigation keys (Select, Left, Up, Down, Right) and a single Reset button for the Arduino.
- Analog Key Reading: To save digital I/O pins, the 5 keypad buttons are mapped to a single analog input (A0) via a voltage divider.
- Adjustable Contrast: Includes an on-board potentiometer for adjusting the display contrast.
- Backlight Control: The backlight is typically connected to Digital Pin 10, allowing the code to turn it on/off or change brightness (PWM).
- Expanded Headers: Provides broken-out header pins for analog pins (A1-A5) and unused digital pins for sensor connections.
Specifications
- Operating Voltage: 5V DC
- Dimensions: Approx. 80mm x 58mm
- Display Type: 16×2 Character LCD (HD44780 compatible)
- Pin Requirement: Digital pins 4-10 (4-bit mode) and Analog Pin A0
- Color: Blue background with White backlight
Pin Configuration
The shield typically uses the following Arduino pin mapping:
| LCD Function | Arduino Pin |
|---|---|
| Register Select (RS) | Digital 8 |
| Enable (E) | Digital 9 |
| Data 4 (DB4) | Digital 4 |
| Data 5 (DB5) | Digital 5 |
| Data 6 (DB6) | Digital 6 |
| Data 7 (DB7) | Digital 7 |
| Backlight Control | Digital 10 |
| Buttons (All) | Analog 0 |
Typical Applications
- Interactive Menu Systems: Building navigated menus to change settings.
- Data Monitoring: Displaying sensor data (e.g., Temperature, Humidity).
- Robotics Control: Providing manual control over robot movement.
- Standalone Projects: Clocks, timers, or simple game consoles.
Usage Tips
- Library: The standard
LiquidCrystallibrary is used to control this shield. - Initializer: In your code, use:
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);. - Button Reading: Use
analogRead(0)to read the buttons, with different voltage thresholds distinguishing each key. - I2C Alternative: Some versions have an I2C backpack attached, which only requires 2 pins (SDA/SCL) instead of the standard 7-8 pins.
- Operating Voltage:5V
- 5 Push buttons to supply a custom menu control panel
- RST button for resetting arduino program
- Integrate a potentiometer for adjusting the backlight
- Expanded available I/O pins
- Expanded Analog Pinout with standard DFRobot configuration for fast sensor extension
- Dimension: 80 x 58 mm
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