- 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 );