- Weight: 7.5 grams
- Keypad dimensions: 70mm x 77mm x 1mm (2.75″ x 3″ x 0.035″)
- Length of cable + connector: 85mm
- 7-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 = 3; //three columns char keys[ROWS][COLS] = { {'1','2','3'}, {'4','5','6'}, {'7','8','9'}, {'*','0','#'} }; byte rowPins[ROWS] = {8, 7, 6, 5}; //connect to the row pinouts of the keypad byte colPins[COLS] = {4, 3, 2}; //connect to the column pinouts of the keypad Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );