{"title":"4x4 Matrix Keypad","handle":"4x4-matrix-keypad","url":"/products/4x4-matrix-keypad","description":"A sturdy 4×4 matrix keypad with 16 buttons, providing a durable tactile input option for microcontroller projects. This hard-button keypad offers a more robust feel compared to membrane keypads, making it well-suited for frequently used interfaces.\n\nThe keypad uses a standard 8-pin matrix layout — four row pins followed by four column pins (left to right). It works with the popular Arduino Keypad library and is compatible with Arduino, Raspberry Pi, and other microcontrollers.\n\nKey Features\n\n\n16 Hard-Button Keys – 4×4 matrix layout (0–9, A–D, *, #)\n\n8-Pin Interface – 4 row pins + 4 column pins for simple matrix scanning\n\nDurable Construction – Sturdier hard-button design for frequent use\n\nWide Compatibility – Works with Arduino, Raspberry Pi, ESP32, and other microcontrollers\n\n\nIdeal For\n\nPIN code entry and access control\nMenu navigation interfaces\nCalculator and data entry projects\nControl panels and interactive builds\n\n\nPackage Contents\n\n1× 4×4 Matrix Keypad\n\n\nResources\n\nArduino Keypad Library\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5951,"title":"Default Title","sku":"AF-3844","price":12.38,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}