{"title":"3x4 Matrix Keypad","handle":"3x4-matrix-keypad","url":"/products/3x4-matrix-keypad","description":"This 3×4 matrix keypad provides 12 buttons (0–9, *, #) in a sturdy, rigid format. It uses a matrix scanning arrangement requiring only 7 pins to read all 12 keys, making it efficient to connect to Arduino, Raspberry Pi, and other microcontrollers.\n\nHeader pins are included for breadboard use (some light soldering required to attach). The keypad works well with the Arduino Keypad library with minor adjustments for the pin order.\n\nKey Features\n\n\n12-Key Layout – Standard telephone-style 3×4 arrangement (0–9, *, #)\n\nRigid Construction – Sturdier than membrane keypads\n\nMatrix Scanning – Only 7 I/O pins required (3 columns + 4 rows)\n\nBreadboard Compatible – Header pins included for easy prototyping\n\n\nPin Order\nNote that the rows and columns are intermixed. The order from left to right is: COL2, ROW1, COL1, ROW4, COL3, ROW3, ROW2.\n\nIdeal For\n\nSecurity keypads and access control projects\nMenu navigation interfaces\nData entry and calculator projects\nArduino and microcontroller input\n\n\nPackage Contents\n\n1× 3×4 matrix keypad\nHeader pins (requires soldering)\n\n\n\nTip: Also available: Membrane 3×4 Matrix Keypad (flexible version) and 4×4 Matrix Keypad (16-key version).\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":5970,"title":"Default Title","sku":"AF-3845","price":12.68,"on_sale":false,"in_stock":true,"available_quantity":103,"option1":"Default Title"}]}