Keypad arduino interrupt pins - Using matrix keypad with Arduino - CodeProject
There are only two external interrupt pins on the ATmega168 328 Handling external interrupts with Arduino; With Arduino 007, there is a simpler method for this.
Keypad A version of the keypad library found in Wiring. This is just a copy made compatible with the Arduino IDE library manager.
MAX7360 Keypad Controller 8x8 if enabled). An interrupt (activelow INTK) output can be configured to up to six column pins can be used as generalpurpose.
COM: A basic 12 button keypad for user input. The buttons are setup in a matrix format. This allows a microcontroller to 'scan' the 7 output pins to see which o
The programmer defines where the processor should start executing code if a particular interrupt occurs. In Arduino, interrupts rather than monitoring pins.
Arduino Door Lock is to solder wires to all the pins on the keypad. in the same fashion except they will connect to Arduino digital pins 2, 4.