dr-kd

#include <Keypad.h>

const byte ROWS = 7;
const byte COLS = 5;
byte CHANNEL = 1;

char keys[COLS][ROWS] = {
  { 31, 32, 30, 10, 2,  28, 29 },
  { 27, 7,   9, 25, 26, 24, 4  },
  { 6,  22, 23, 21, 1,  3,  19 },