Adafruit Membrane 3x4 Matrix Keypad + extras

Punch in your secret key into this numeric matrix keypad. This keypad features 12 buttons, arranged in a familiar 3x4 grid like a telephone keypad.

Made of a thin, flexible membrane material, it comes with adhesive backing allowing attachment to nearly any surface by simply removing the protective paper.

The keypad is designed with a matrix connection, requiring just 7 microcontroller pins (3 columns and 4 rows) for scanning, making it efficient and easy to interface with your projects.

Included is a 7-pin extra-long header strip for seamless connection to breadboards. Explore a wealth of resources such as our detailed guide featuring wiring diagrams, libraries, and example sketches tailored for matrix keypads.