This Matrix Keypad 4 X 4 has 16 buttons, arranged in a telephone-line 3x4 grid with a column of 4 characters (A, B, C, and D). The keys are connected into a matrix, hence only 8 microcontroller pins (4-columns and 4-rows) are required to scan the pad.
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 8 microcontroller pins (4-columns and 4-rows) to scan through the pad.
{"id":1416939470920,"title":"Membrane 4X4 Matrix Keypad + Extras","handle":"membrane-4x4-matrix-keypad-extras","description":"\u003cp\u003e\u003cspan\u003eThis \u003c\/span\u003e\u003cstrong\u003eMatrix Keypad 4 X 4\u003c\/strong\u003e\u003cspan\u003e has 16 buttons, arranged in a telephone-line 3x4 grid with a column of 4 characters (A, B, C, and D). The keys are connected into a matrix, hence only 8 microcontroller pins (4-columns and 4-rows) are required to scan the pad.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt'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 8 microcontroller pins (4-columns and 4-rows) to scan through the pad.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDetails:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePad Size: 76 x 76 x 0.8mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCable length: 85mm (include connector)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnector: dupont 7 pins, 0.1 inch (2.54mm) Pitch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMount style: Self-Adherence\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. circuit rating: 35VDC, 100mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInsulation spec.: 100M Ohm, 100V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDielectric withstand: 250Vrms (60Hz, 1min)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eContact bounce: ≤5ms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLife expectancy: 1 million closures\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWeight: 7.5g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/4x4-Keypad-Schematic_480x480.png?v=1593465118\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/4x4-Keypad-Dimensions_480x480.png?v=1593465133\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eResources\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC7015\"\u003e\u003cspan\u003eDatasheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/LIBRARIES\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC7015\"\u003e\u003cspan\u003eLibrary\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/LIBRARIES\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC7015\"\u003e\u003cspan\u003eSample Code\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eTutorial\u003c\/span\u003e\u003c\/h5\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/yYnX5QodqQ4\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/qIDzzG2LUtg\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003cp\u003e \u003c\/p\u003e","published_at":"2022-12-06T11:27:39+05:30","created_at":"2018-09-01T14:06:18+05:30","vendor":"ThinkRobotics.in","type":"Control Switch","tags":["4 X 4","4X4","ELC7","IN-MOD","Input Device","Keyboard","Keypad"],"price":9999,"price_min":9999,"price_max":9999,"available":false,"price_varies":false,"compare_at_price":10500,"compare_at_price_min":10500,"compare_at_price_max":10500,"compare_at_price_varies":false,"variants":[{"id":12744475213896,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"ELC7015","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"Membrane 4X4 Matrix Keypad + Extras","public_title":null,"options":["Default Title"],"price":9999,"weight":10,"compare_at_price":10500,"inventory_management":"shopify","barcode":"12744475213896","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/products\/1_31134f8d-eab8-4597-a147-4768d6f73ff0.jpg?v=1577794129","\/\/thinkrobotics.com\/cdn\/shop\/products\/2_393d9cff-f026-4882-af10-dd193e7b8210.jpg?v=1577794129","\/\/thinkrobotics.com\/cdn\/shop\/products\/3_b6e388af-0316-4993-bbe8-fefdd42c2526.jpg?v=1577794129"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/products\/1_31134f8d-eab8-4597-a147-4768d6f73ff0.jpg?v=1577794129","options":["Title"],"media":[{"alt":"Membrane 4X4 Matrix Keypad + Extras","id":798718427208,"position":1,"preview_image":{"aspect_ratio":1.0,"height":497,"width":497,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/1_31134f8d-eab8-4597-a147-4768d6f73ff0.jpg?v=1577794129"},"aspect_ratio":1.0,"height":497,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/1_31134f8d-eab8-4597-a147-4768d6f73ff0.jpg?v=1577794129","width":497},{"alt":"Membrane 4X4 Matrix Keypad + Extras","id":798718459976,"position":2,"preview_image":{"aspect_ratio":1.0,"height":497,"width":497,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/2_393d9cff-f026-4882-af10-dd193e7b8210.jpg?v=1577794129"},"aspect_ratio":1.0,"height":497,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/2_393d9cff-f026-4882-af10-dd193e7b8210.jpg?v=1577794129","width":497},{"alt":"Membrane 4X4 Matrix Keypad + Extras","id":798718492744,"position":3,"preview_image":{"aspect_ratio":1.0,"height":497,"width":497,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/3_b6e388af-0316-4993-bbe8-fefdd42c2526.jpg?v=1577794129"},"aspect_ratio":1.0,"height":497,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/3_b6e388af-0316-4993-bbe8-fefdd42c2526.jpg?v=1577794129","width":497}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003e\u003cspan\u003eThis \u003c\/span\u003e\u003cstrong\u003eMatrix Keypad 4 X 4\u003c\/strong\u003e\u003cspan\u003e has 16 buttons, arranged in a telephone-line 3x4 grid with a column of 4 characters (A, B, C, and D). The keys are connected into a matrix, hence only 8 microcontroller pins (4-columns and 4-rows) are required to scan the pad.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt'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 8 microcontroller pins (4-columns and 4-rows) to scan through the pad.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDetails:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePad Size: 76 x 76 x 0.8mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCable length: 85mm (include connector)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConnector: dupont 7 pins, 0.1 inch (2.54mm) Pitch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMount style: Self-Adherence\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. circuit rating: 35VDC, 100mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInsulation spec.: 100M Ohm, 100V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDielectric withstand: 250Vrms (60Hz, 1min)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eContact bounce: ≤5ms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLife expectancy: 1 million closures\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWeight: 7.5g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/4x4-Keypad-Schematic_480x480.png?v=1593465118\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/4x4-Keypad-Dimensions_480x480.png?v=1593465133\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eResources\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC7015\"\u003e\u003cspan\u003eDatasheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/LIBRARIES\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC7015\"\u003e\u003cspan\u003eLibrary\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/LIBRARIES\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC7015\"\u003e\u003cspan\u003eSample Code\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eTutorial\u003c\/span\u003e\u003c\/h5\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/yYnX5QodqQ4\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/qIDzzG2LUtg\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003cp\u003e \u003c\/p\u003e"}
