{"product_id":"4x4-matrix-keypad","title":"4x4 Matrix Keypad","description":"\u003cp\u003eAdd data entry, passwords and more to your projects with this numeric matrix keypad.\u003c\/p\u003e\n\u003cp\u003eThe keypad has sixteen buttons in an old-school telephone-style grid. Each button is connected to a matrix so you can use 8 GPIO on your microcontroller of choice to scan through the pad for entry.\u003c\/p\u003e\n\u003cp\u003eEither solder thin wires directly to the pads, or fit some 2.54mm\/01\" headers and solder them downwards for using with a breadboard.\u003c\/p\u003e\n\u003cp\u003eAdafruit have a great tutorial for using this style of matrix over on their website\u003c\/p\u003e\n\u003cp\u003eWe also sell a 3x4 version of this matrix keypad\u003c\/p\u003e\n\u003ch2\u003ePinout\u003c\/h2\u003e\n\u003cp\u003eFrom the left there are four row pins followed by four column pins.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv id=\"tab-technical-details-content\" class=\"panel-collapse collapse in\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\n\u003cli\u003eForce: 160-180g\u003c\/li\u003e\n\u003cli\u003eContact Resistance: \u0026lt;100Ω\u003c\/li\u003e\n\u003cli\u003eDimensions (approx): 69.0mm x 66mm x 10mm\u003c\/li\u003e\n\u003cli\u003eWeight: ~21g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRevision History\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAs of 20\/03\/2024, we no longer provide a pin header strip with this keypad (due to a supplier change)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"col-lg-2 col-md-3 col-sm-3 col-xs-4\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"The Pi Hut","offers":[{"title":"Default Title","offer_id":46982538395820,"sku":"yqb1787257849753","price":3.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3858\/0140\/files\/4x4-matrix-keypad_1.jpg?v=1787257858","url":"https:\/\/findnuvorio.com\/products\/4x4-matrix-keypad","provider":"Findnuvorio","version":"1.0","type":"link"}