{"product_id":"2-pack-4x4-matrix-keypad-i2c-adapter","title":"4x4 Matrix Keypad with I2C Adapter, 2-Pack","description":"\u003cp\u003eA heavy-duty 16-key keypad with an I2C adapter that cuts its wiring from eight GPIO pins to two. Two complete sets in the pack.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEight pins down to two.\u003c\/strong\u003e The adapter reads the keypad over SDA and SCL, and other I2C devices can share the same wires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRigid keypad.\u003c\/strong\u003e Moulded ABS frame with 16 raised keys: 0–9, A–D, * and #.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug together.\u003c\/strong\u003e The 8-pin header is soldered to the keypad at the factory and plugs into the adapter socket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V or 5V.\u003c\/strong\u003e Runs at your board's logic voltage, no level shifter needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoth on one bus.\u003c\/strong\u003e Adapters ship at 0x20; bridge the A0 pad on one (soldering required) to move it to 0x21. The pads cover 0x20–0x27.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 × heavy-duty 4x4 keypad, 8-pin header soldered on\u003c\/li\u003e\n\u003cli\u003e2 × I2C adapter with an 8-way socket\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 (4 × 4)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActuation force:\u003c\/strong\u003e 160–180g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact resistance:\u003c\/strong\u003e under 100Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply:\u003c\/strong\u003e 3.3V or 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI2C address:\u003c\/strong\u003e 0x20 as shipped, 0x20–0x27 by pads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWorks with\u003c\/h3\u003e\n\u003cp\u003eAny board with I2C in the Arduino IDE, including the ESP32-S3. The open-source I2CKeyPad library is in the Arduino Library Manager.\u003c\/p\u003e","brand":"Lonely Binary","offers":[{"title":"Default Title","offer_id":48884154499229,"sku":"B0G6YRQJ5F","price":19.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/9994\/7908\/files\/51vWdpxj65L.jpg?v=1788828913","url":"https:\/\/lonelybinary.com\/en-eu\/products\/2-pack-4x4-matrix-keypad-i2c-adapter","provider":"Lonely Binary","version":"1.0","type":"link"}