#include <Keypad.h> const byte ROWS = 4; const byte COLS = 3; char keys[ROWS][COLS] = { {'1','2','3'}, {'4','5','6'}, {'7','8','9'}, {'*','0','#'} }; byte rowPins[ROWS] = { 25, 35, 33, 29 }; byte colPins[COLS] = { 27, 23, 31 }; Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS…

Problem with 3*4 Keypad Again

Grumpy_Mike July 15, 2010, 6:59pm 6

If you declare the variable outside of any function it is available in all functions.

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