Adafruit 4x4 Matrix Keypad

Punch in your secret key or Jenny's number into this numeric matrix keypad. Its 16 buttons are arranged in a telephone-style 4x4 grid, offering versatility for various projects. The matrix setup requires only 8 microcontroller pins—4 columns and 4 rows—for efficient scanning, minimizing pin usage without sacrificing functionality.

The keypad comes with headers for easy breadboard integration, with optional light soldering for secure connections. You can opt for plain wires if that suits your setup better. This product is essentially a more robust version of our Membrane 3x4 Matrix Keypad, providing enhanced durability.

For ease of use, explore our tutorials featuring Arduino libraries and example code, complete with wiring diagrams and sketches for a variety of matrix keypad applications. Starting from the left, you'll find four row pins, moving right to the four column pins, clearly marked for straightforward assembly. Unlock creativity with our detailed guides and consider pairing it with our Adafruit FeatherWing OLED for an expanded project scope.