4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)

{"id":6580557545646,"title":"4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)","handle":"4x4-membrane-switch-matrix-keyboard-module-f1-f2-f3","description":"\u003cp\u003eMatrix keypads use a combination of four rows and four columns to provide button states to the host device, typically a microcontroller.\u003c\/p\u003e\n\u003cp\u003eUnderneath each key is a pushbutton, with one end connected to one row, and the other end connected to one column.\u003c\/p\u003e\n\u003cp\u003e For the microcontroller to determine which button is pressed, it first needs to pull from each of the four columns (pins 1-4) either low or high one at a time, and then poll the states of the four rows (pins 5-8).\u003c\/p\u003e\n\u003cp\u003eDepending on the states of the columns, the microcontroller can tell which button is pressed.\u003c\/p\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProduct Name: Membrane Switch\u003c\/li\u003e\n\u003cli\u003eKey Type: 4x4\u003c\/li\u003e\n\u003cli\u003eVoltage DC: 12V\u003c\/li\u003e\n\u003cli\u003eCurrent: 30mA\u003c\/li\u003e\n\u003cli\u003eContact Resistance: \u0026gt;=100 Ohm\u003c\/li\u003e\n\u003cli\u003eForce: 250-350g\u003c\/li\u003e\n\u003cli\u003eContact Bounce: \u0026gt;1s\u003c\/li\u003e\n\u003cli\u003ePad Size: 76 x 69 x 0.8mm\/3'' x 2.7'' x 0.03''(L*W*T)\u003c\/li\u003e\n\u003cli\u003eCable Length: 72mm\/2.8''\u003c\/li\u003e\n\u003cli\u003eConnector Pitch: 2.54mm\/0.1''\u003c\/li\u003e\n\u003cli\u003eWeight: 9g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eContents\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2021-03-23T13:18:14+10:00","created_at":"2021-03-23T13:18:13+10:00","vendor":"KiwiGuy Computers","type":"Module","tags":["Category_Keypad"],"price":499,"price_min":499,"price_max":499,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":39410954633390,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"BC0000549","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)","public_title":null,"options":["Default Title"],"price":499,"weight":6,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.kiwiguycomputers.com.au\/cdn\/shop\/products\/4x4MembraneSwitchMatrixKeyboardModule_F1_F2_F3.jpg?v=1658718630"],"featured_image":"\/\/www.kiwiguycomputers.com.au\/cdn\/shop\/products\/4x4MembraneSwitchMatrixKeyboardModule_F1_F2_F3.jpg?v=1658718630","options":["Title"],"media":[{"alt":"4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)","id":30378611179768,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/www.kiwiguycomputers.com.au\/cdn\/shop\/products\/4x4MembraneSwitchMatrixKeyboardModule_F1_F2_F3.jpg?v=1658718630"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"\/\/www.kiwiguycomputers.com.au\/cdn\/shop\/products\/4x4MembraneSwitchMatrixKeyboardModule_F1_F2_F3.jpg?v=1658718630","width":1000}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eMatrix keypads use a combination of four rows and four columns to provide button states to the host device, typically a microcontroller.\u003c\/p\u003e\n\u003cp\u003eUnderneath each key is a pushbutton, with one end connected to one row, and the other end connected to one column.\u003c\/p\u003e\n\u003cp\u003e For the microcontroller to determine which button is pressed, it first needs to pull from each of the four columns (pins 1-4) either low or high one at a time, and then poll the states of the four rows (pins 5-8).\u003c\/p\u003e\n\u003cp\u003eDepending on the states of the columns, the microcontroller can tell which button is pressed.\u003c\/p\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProduct Name: Membrane Switch\u003c\/li\u003e\n\u003cli\u003eKey Type: 4x4\u003c\/li\u003e\n\u003cli\u003eVoltage DC: 12V\u003c\/li\u003e\n\u003cli\u003eCurrent: 30mA\u003c\/li\u003e\n\u003cli\u003eContact Resistance: \u0026gt;=100 Ohm\u003c\/li\u003e\n\u003cli\u003eForce: 250-350g\u003c\/li\u003e\n\u003cli\u003eContact Bounce: \u0026gt;1s\u003c\/li\u003e\n\u003cli\u003ePad Size: 76 x 69 x 0.8mm\/3'' x 2.7'' x 0.03''(L*W*T)\u003c\/li\u003e\n\u003cli\u003eCable Length: 72mm\/2.8''\u003c\/li\u003e\n\u003cli\u003eConnector Pitch: 2.54mm\/0.1''\u003c\/li\u003e\n\u003cli\u003eWeight: 9g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eContents\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)\u003c\/li\u003e\n\u003c\/ul\u003e"}

Matrix keypads use a combination of four rows and four columns to provide button states to the host device, typically a microcontroller.

Underneath each key is a pushbutton, with one end connected to one row, and the other end connected to one column.

For the microcontroller to determine which button is pressed, it first needs to pull from each of the four columns (pins 1-4) either low or high one at a time, and then poll the states of the four rows (pins 5-8).

Depending on the states of the columns, the microcontroller can tell which button is pressed.

Specifications

Product Name: Membrane Switch
Key Type: 4x4
Voltage DC: 12V
Current: 30mA
Contact Resistance: >=100 Ohm
Force: 250-350g
Contact Bounce: >1s
Pad Size: 76 x 69 x 0.8mm/3'' x 2.7'' x 0.03''(L*W*T)
Cable Length: 72mm/2.8''
Connector Pitch: 2.54mm/0.1''
Weight: 9g

4x4 Membrane Switch Matrix Keyboard Module (F1,F2,F3)

Specifications

Contents

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