{"product_id":"membrane-3x4-matrix-keypad-extras-3x4","title":"Membrane 3x4 Matrix Keypad + extras (3x4)","description":"\u003cp\u003ePunch 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.\u003cbr\u003e\u003cbr\u003eWe include a 7-pin extra-long header strip so you can plug this into a breadboard with ease.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCheck out our detailed guide with wiring diagrams, libraries and example sketches for all sorts of matrix keypads.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e \u003cdiv class=\"row\"\u003e \u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 7.5 grams\u003c\/li\u003e\n\u003cli\u003eKeypad dimensions: 70mm x 77mm x 1mm (2.75\" x 3\" x 0.035\")\u003c\/li\u003e\n\u003cli\u003eLength of cable + connector: 85mm\u003c\/li\u003e\n\u003cli\u003e7-pin 0.1\" pitch connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCheck out our detailed guide with wiring diagrams, libraries and example sketches for all sorts of matrix keypads.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e \u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e \u003c\/ul\u003e \u003cdiv class=\"row\"\u003e\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\u003c\/div\u003e \u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":52217284788512,"sku":"cfb1787257508216","price":2.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/3231\/3120\/files\/membrane-3x4-matrix-keypad-extras-3x4_1.jpg?v=1787257513","url":"https:\/\/www.elmwoodbasket.shop\/products\/membrane-3x4-matrix-keypad-extras-3x4","provider":"My Store","version":"1.0","type":"link"}