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4x3 Keypad Membrane

4x3 Keypad Membrane
-64 %
4x3 Keypad Membrane
₱49.50
₱137.00
  • Stock: In Stock
  • Model: 77012375
  • Weight: 0.00g
  • UPC: 77012375

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.

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