4*4 Matrix Array/Matrix Keyboard 16 Key Membrane Switch Keypad for arduino 4X4 Matrix Keyboard



A keypad is often needed to provide input to an Arduino system, and membrane-type keypads are an economical solution for many applications. They are quite thin and can easily be mounted wherever they are needed.   


This is a very simple example, but I think you can see how easy it is to get keypad input to your Arduino program. You can use this type of input for many different projects, including:

  • Door lock
  • Input PWM
  • Alarm clock
  • Security lock


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