16 X 2 LCD Keypad Shield for Arduino

Introduction

The LCD and Keypad Shield gives you a handy 16-character by 2-line display, 5 buttons and a controllable backlight, plug it straight in on top of your Arduino board or other project shields. The display is set behind the shield for a low profile fitment and nice look and we've included panel mounting screw holes in the corners.

It's great when you want to build a stand-alone project with its own user interface that doesn't require a computer attached to send commands to your Arduino. Works perfectly in 4-bit mode with the "LiquidCrystal" library included with the Arduino IDE, allowing you to control the LCD with a total of just 6 digital I/O lines. We've deliberately picked D4-D9 so that it doesn't interfere with pins required by other popular products such as the Ethernet Shield and EtherTen, so you can stack this on top of other shields to give you a local display.

The buttons provide "left", "right", "up", "down", and "select" while using just one analog input. That leaves the other analog inputs free for you to use in your projects.

The LCD backlight is connected to D3 and can be controlled for on/off, brightness and flashing effects.

LCD keypad shield for Arduino operates at 5V.

• Includes a 2x16 LCD display and 6 momentary push buttons
• Use digital pins 4, 5, 6, 7, 8, 9, 10, and analog pin 0 to interface with the LCD
• Do not use Pin 10 while this shield is connected
• LCD color is green.

The LinkSprite 16 X 2 LCD Keypad Shield for Arduino includes a 2x16 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 pushbuttons. The shield operates at 5V.

Note: all new LCD shields with paper enclosure use pin 10 as brightness control.

Model:LCD_16_2_SHIELD

Features

• 16x2 LCD using HD44780-compatible display module (white characters on blue background).
• 5 buttons on one analog input (A0).
• LCD backlight with current limiting, brightness and on/off controllable by D3, can be moved to D2, D10, A1, A2, A3, A4 or A5 for easy project pin compatibility.
• Recessed LCD, panel mount screw holes and button layout suitable for panel or cabinet mounting if desired.
• Reset button.
• Power supply smoothing capacitor.
• Pins used by shield clearly marked, LiquidCrystal library setup reference is on the bottom of the pcb for convenience.

Cautions

The warnings and wrong operations possible cause dangerous.

Schematic

• Schematic V1.0 in PDF

• Schematic V0.01 in PDF

FAQ

Please list your question here:

Support

If you have questions or other better design ideas, you can go to our forum to discuss or creat a ticket for your issue at linksprite support.

Resources

• PDF Files

• LCD keypad Shields User Guides in PDF

• 16X2 LCDKeypad Shield Schematic in PDF

• Wiki in PDF

• LCD Datasheet

• ZIP Files

• LCD 4Bit Mod

• LCD Keypad Library

• Key Grabber Library V2

See Also

Other related products and resources.

Licensing

This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are licensed under GPL/LGPL, see source code files for details.