Membrane 3x4 Matrix Keypad + extras - 3x4

PRODUCT ID: 419
$3.95
QTY DISCOUNT
1-9 $3.95
10-99 $3.56
100+ $3.16

Description

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
  • Keypad dimensions: 70mm x 77mm x 1mm (2.75" x 3" x 0.035")
  • Length of cable + connector: 85mm
  • 7-pin 0.1" pitch connector

Check out our detailed guide with wiring diagrams, libraries and example sketches for all sorts of matrix keypads.

RoHS 2 2011 65 EU Compliant

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