Description:
Arduino LCD Keypad Shield
This is a 16x2 LCD and Keypad shield for Arduino Uno, Diecimila, Duemilanove and Freeduino boards.
- Blue Backlight with white words
- uses 4 Bit Arduino LCD Library
- Left, Right, Up, Down and Select buttons
- Screen contrast adjustment
- Arduino Reset button
The board uses different pins to the Arduino example sketches, so to make the display work, use the following sequence of pins when starting the library:
LiquidCrystal lcd(8,9,4,5,6,7);
The buttons are connected to only one analog input pin through resistors to give a different voltage for each button, thus saving on input/output pins. Reading the buttons is easy and example code is shown below
Pin Connections
| Pin | Function |
| Analog 0 | Buttons (select, up, right, down and left) |
| Digital 4 | DB4 |
| Digital 5 | DB5 |
| Digital 6 | DB6 |
| Digital 7 | DB7 |
| Digital 8 | RS (Data or Signal Display Selection) |
| Digital 9 | Enable |
| Digital 10 |
Backlit Control |
Pin used:
Installing library:
Download and unzipped the library folder, and place it to the Arduino libraries directory. Once the library is correctly installed, the file structcture should look like:
arduino-0010/hardware/libraries/LCD4Bit_mod
arduino-0010/hardware/libraries/LCD4Bit_mod/LCD4Bit_mod.cpp
arduino-0010/hardware/libraries/LCD4Bit_mod/LCD4Bit_mod.h
arduino-0010/hardware/libraries/LCD4Bit_mod/keywords.txt
arduino-0010/hardware/libraries/LCD4Bit_mod/examples
arduino-0010/hardware/libraries/LCD4Bit_mod/readme.txt
Open the example from file -> Examples -> LDC4Bit_mod -> LCD4Bit_modExample, as shown in the screenshot below.
The example should provide enough information to show you how to work with the LCD and all the 5 buttons.
Schematics download:
Lcd panel, display lcd, arduino to lcd, arduino lcd, lcd and arduino, lcd for arduino,lcd to arduino, arduino with lcd, character display,
Image:
Catalog: