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Membrane 3x4 Matrix Keypad + extras - 3x4


  • Model: 419
  • Shipping Weight: 0.05Kg
  • 52 Units in Stock

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Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad. Check the tutorials tab for links to an Arduino library and example code. 

A 7-pin extra-long header strip so you can plug this into a breadboard with ease.

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