Arduino LCD Keypad Shield
This is a 16x2 LCD and Keypad shield for Arduino Uno, Diecimila, Duemilanove, Freeduino boards, and other Uno sized compatible boards such as the Sparkfun Redboard.
- 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:
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
|Analog 0||Buttons (select, up, right, down and left)|
|Digital 8||RS (Data or Signal Display Selection)|
|Digital 10||Backlite Control|
The board is a little bigger than an Arduino UNO (measuring 8cm x 6cm). This can be seen in the images.
For more information and example code click here.