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.
3D printed parts are of low finish. Lot.of sharp edges on parts. Also the fitment of the parts are not happening because of excess material. Most often the parts have to be filed or reworked. Screws are given in exact number as needed. If one screw is missed, then the assembly is impossible
{"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","type":"Control Switch","tags":["4 X 4","4X4","ELC7","IN-MOD","Input Device","Keyboard","Keypad","ZOHO UPDATED"],"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":"ELC7015","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"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"}
