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Description
This is a 16×2 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 |
Note: Do not use pin Digital 10 when this board is plugged in (see here for more details)
The board is a little bigger than an Arduino UNO (measuring 8cm x 6cm). This can be seen in the images.
// include the library code: #include <LiquidCrystal.h> // initialize the library with the numbers of the interface pins LiquidCrystal lcd(8, 9, 4, 5, 6, 7); void setup() { // set up the LCD's number of columns and rows: lcd.begin(16, 2); // Print a message to the LCD. lcd.setCursor(0,0); lcd.print("LCD Key Shield"); lcd.setCursor(0,1); lcd.print("Press Key:"); } void loop() { int x; x = analogRead (0); lcd.setCursor(10,1); if (x < 60) { lcd.print ("Right "); } else if (x < 200) { lcd.print ("Up "); } else if (x < 400){ lcd.print ("Down "); } else if (x < 600){ lcd.print ("Left "); } else if (x < 800){ lcd.print ("Select"); } }
Additional information
| Weight | 0.021 kg |
|---|
Brand
Chinese
Chinese
Chinese
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Important Note: This Return & Refund Policy is applied only for Orders invoiced VIA UGE Electronics, and regarding any Orders has been invoiced VIA any Other Vendor you can check the Return & Refund Policy of this Vendor VIA the Vendor Stroe Page, and it’s not our responsibility for any issue between you and the Vendor.
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