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.
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{"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"],"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":[]}],"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"}
Careful, careful, no return policy once ordered, Monitor is very fragile
I order 15.6 inch monitor with built in stand for my Raspberry PI. The issue with built in stand, is that it is so fragile that a slight movement in cables the monitor will move and it can topple breaking the LCD panel. The stand does not help monitor to be in one place, not suitable for regular use.
Be careful before ordering this product as as the company does not accept returns and has not return policy, be careful careful careful.
This is Delhi based company which is importing items from China and selling without any return policy.
