KEYPAD TOUCH 16

KEYPAD TOUCH 16

ARDUINO 4X4 MATRIX MEMBRANE KEYPAD

Punch in your secret key into this numeric matrix keypad. This keypad has 16 buttons, arranged in a telephone-line 4×4 grid. It’s made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 8 microcontroller pins (4-columns and 4-rows) to scan through the pad. Check the Description tab for an Arduino example code.

Code: KEYPAD TOUCH 16

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Description

  • Weight: 8.5 grams
  • Keypad dimensions: 93mm x 77mm x 1mm (2.75″ x 3″ x 0.035″)
  • Length of cable + connector: 85mm
  • 8-pin 0.1″ pitch connector

Before uploading the code below to your Arduino, make sure you have the appropriate library installed

 

#include "Arduino.h"
#include "Keypad.h"

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keys[ROWS][COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte rowPins[ROWS] = {9, 8, 7, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5, 4, 3, 1}; //connect to the column pinouts of the keypad

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

Additional information

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