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3x4 Phone-style Matrix Keypad

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  • Adafruit
  • EXP-R15-549
  • 1824
  • 0
  • CN
  • 85423990
  • 0.03
This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of plastic with... mehr

This keypad has 12 buttons, arranged in a telephone-line 3x4 grid. It's made of plastic with sturdy plastic buttons. The keys are connected to a matrix so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad. 

There's a great Matrix Keypad Arduino library that should work great with this item with minor adjustments. It's basically a sturdier version of our Membrane 3x4 Matrix Keypad and comes with 7 header pins pre-soldered on for easy plugging. Starting from the left there are three column pins, and then to the right are the four row pins. 
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