{"title":"Keypads \u0026 Switches","description":null,"products":[{"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":27.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/9994\/7908\/files\/51vWdpxj65L.jpg?v=1788828913"},{"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":27.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/9994\/7908\/files\/51b0VPQEdqL.jpg?v=1788828915"},{"product_id":"10-pack-16mm-latching-led-push-button-switch-5-colours","title":"16mm Latching LED Push Button, 10-Pack","description":"\u003cp\u003eTen illuminated latching push buttons in five colours, for control panels, arcade cabinets, dashboards and project boxes.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatching.\u003c\/strong\u003e Press once for on, again for off. The switch holds its position, so it suits power and mode switches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate LED terminals.\u003c\/strong\u003e Four terminals: two for the switch and two for the LED (+ and −), so a microcontroller can drive the light independently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd a series resistor.\u003c\/strong\u003e The LED has no built-in resistor. Its forward voltage is about 2.2 V, so fit 220–1000 Ω from 3 V or more; wiring it straight to 5 V will damage it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel mount.\u003c\/strong\u003e Fixes with the supplied knurled nut, no adhesive or bracket needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSorted storage.\u003c\/strong\u003e Supplied in a hinged compartment case.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e10 × latching LED push button: 2 each of red, yellow, green, blue and white\u003c\/li\u003e\n\u003cli\u003eKnurled mounting nuts\u003c\/li\u003e\n\u003cli\u003eHinged compartment case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch type:\u003c\/strong\u003e SPST, latching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 4 (2 switch, 2 LED)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED forward voltage:\u003c\/strong\u003e About 2.2 V, no built-in resistor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Low-voltage circuits\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lonely Binary","offers":[{"title":"Default Title","offer_id":48910471037085,"sku":"B0HH8KBNCY","price":12.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/9994\/7908\/files\/81VmBJmeL0L._AC_SL1500.jpg?v=1789465459"},{"product_id":"24-pack-dpdt-push-button-switches-8x8mm","title":"DPDT Push Button Switch 8x8mm, 24-Pack","description":"\u003cp\u003e24 compact 8 × 8 mm double-pole, double-throw push button switches for breadboards and PCBs.\u003c\/p\u003e\n\u003ch3\u003eHighlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDPDT.\u003c\/strong\u003e Each press switches two independent circuits at once.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.54 mm pitch.\u003c\/strong\u003e Fits standard breadboards and prototyping boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrough-hole.\u003c\/strong\u003e Solder straight into a PCB for permanent builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColoured caps.\u003c\/strong\u003e Assorted cap colours for telling buttons apart.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated for over 10,000 presses.\u003c\/strong\u003e Stable feel for frequent use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e DPDT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8 × 8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin pitch:\u003c\/strong\u003e 2.54 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Through-hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated life:\u003c\/strong\u003e Over 10,000 cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWorks with\u003c\/h3\u003e\n\u003cp\u003e3.3 V and 5 V logic, including UNO, ESP32 and other development boards.\u003c\/p\u003e","brand":"Lonely Binary","offers":[{"title":"Default Title","offer_id":48910471069853,"sku":"B0F6XY2W2R","price":16.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/9994\/7908\/files\/71y5_yp80dL._SL1500.jpg?v=1789465460"}],"url":"https:\/\/lonelybinary.com\/en-eu\/collections\/keypads-input.oembed","provider":"Lonely Binary","version":"1.0","type":"link"}