Arduino 6-button LCD shield and 16x2 LCD backlit alphanumeric panel

EXAMPLE SOFTWARE

LCD shield suitable for Arduino UNO, Mega, Diecimila, Duemilanove, Leonardo and compatible. Equipped with a 16x2 character (16 columns on two lines) backlit LCD screen with adjustable contrast and 5 function buttons (SELECT, UP, DOWN, RIGHT, LEFT) + 1 RESET Arduino button that can be used in your application.

The buttons are readable via a single analog input line, allowing you to save I / O on the Arduino .

Arduino is provided in the link above to start using the shield. It already contains the management of the LCD and buttons.

To read the pressed button, simply sample the A0 input and compare the ADC value with constant values visible below.

I / O MAP USED BY SHIELD

• LCD RS pin to digital pin 8

• LCD Enable pin to digital pin 9

• LCD D4 pin to digital pin 4

• LCD D5 pin to digital pin 5

• LCD D6 pin to digital pin 6

• LCD D7 pin to digital pin 7

• LCD R / W pin to ground

• 10K resistor: ends to + 5V and ground

• wiper to LCD VO pin (pin 3)

• Button input A0

EXAMPLE CONSTANT VALUES TO OBTAIN THE PRESSED BUTTON

if (sensorValue> = 765) lcd.print ("Press any KEY");

else if ((sensorValue> = 0) && (sensorValue

else if ((sensorValue> = 85) && (sensorValue

else if ((sensorValue> = 255) && (sensorValue

else if ((sensorValue> = 425) && (sensorValue

else if ((sensorValue> = 595) && (sensorValue

Expansion shields are available to expand the communication and processing capabilities of the Arduino board. You can buy them here: EBAY | MECTRONICA STORE

SPECIFICATIONS:

• Shield for Arduino UNO, Mega, Diecimila, Duemilanove, Leonardo and compatible

• 16x2 backlit alphanumeric LCD display

• 5 function buttons (SELECT, UP, DOWN, RIGHT, LEFT) + 1 RESET button

• Adjustable contrast

• Reading of button pressed through single ADC A0 input