Using Arduino with a 3×4 keypad

Well it’s a pretty useful device to input numbers and letters,  it can also be used for security measures like a keypad door lock, and it’s prefect when you need a low-cost and accessible interface for your next idea.
arduino_keypad_wiring

Wiring 3×4 Keypad with Arduino

To wire your 3×4 Keypad to your Arduino, connect the following pins:

  • Keypad Pin 1 –> Arduino Pin 7
  • Keypad Pin 2 –> Arduino Pin 5
  • Keypad Pin 3 –> Arduino Pin 8
  • Keypad Pin 4 –> Arduino Pin 2
  • Keypad Pin 5 –> Arduino Pin 6
  • Keypad Pin 6 –> Arduino Pin 3
  • Keypad Pin 7 –> Arduino Pin 4

 

Recommended Software

  • none

Instructions and Code

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