Membrane 3x4 Matrix Keypad + extras - 3x4

Product ID: 419

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.

We include a 7-pin extra-long header strip so you can plug this into a breadboard with

ease.

Check out our detailed guide with wiring diagrams, libraries and example sketches for all

sorts of matrix keypads.

Technical Details

•

Weight: 7.5 grams

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Keypad dimensions: 70mm x 77mm x 1mm (2.75" x 3" x 0.035")

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Length of cable + connector: 85mm

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7-pin 0.1" pitch connector

https://www.adafruit.com/product/419 9-22-22