{"product_id":"5-set-i2c-4x4-matrix-membrane-keypad","title":"I2C 4x4 Membrane Keypad + Adapter, 5-Pack","description":"\u003cp\u003eFive 16-key soft membrane keypads, each with an I2C adapter that cuts the wiring from eight pins to two. For PIN entry, menus and control panels.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo signal wires.\u003c\/strong\u003e The PCF8574-based adapter reads the 4x4 matrix over I2C, on SDA and SCL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStick-on mounting.\u003c\/strong\u003e Adhesive backing fixes each keypad to a panel, enclosure or desk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3 V or 5 V.\u003c\/strong\u003e Runs at your board's logic voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive complete sets.\u003c\/strong\u003e A keypad and an adapter for each project, plus a storage box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e5 × 4x4 soft membrane keypad, adhesive back\u003c\/li\u003e\n\u003cli\u003e5 × I2C adapter with 8 right-angle pins\u003c\/li\u003e\n\u003cli\u003e1 × storage box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeys:\u003c\/strong\u003e 16 (4x4 matrix)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e I2C via PCF8574 adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI2C address:\u003c\/strong\u003e 0x20 as shipped\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply:\u003c\/strong\u003e 3.3 or 5 V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWorks with\u003c\/h3\u003e\n\u003cp\u003eArduino, ESP32 and other microcontrollers with an I2C keypad library such as Keypad_I2C.\u003c\/p\u003e","brand":"Lonely Binary","offers":[{"title":"Default Title","offer_id":48884154597533,"sku":"B0G2KZW8KX","price":19.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/9994\/7908\/files\/51b0VPQEdqL.jpg?v=1788828915","url":"https:\/\/lonelybinary.com\/en-eu\/products\/5-set-i2c-4x4-matrix-membrane-keypad","provider":"Lonely Binary","version":"1.0","type":"link"}