4×4 Matrix Keypad

<div id=""details"" class=""tabbed details ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content-active""> <div class=""field-tech""> <div> <div id=""details"" class=""tabbed details ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content-active""> <div class=""field-tech""> <h5>Description: Self-adhesive membrane <a href=""https://ekostra.com/product/keypad-4×4/"">keypad</a> 4×4 – 16 keys</h5> </div> </div> </div> <p>Diaphragm keypad equipped with 16 <strong>keys in 4 x 4 arrangement.</strong>It has numbers: from 0 to 9, letters: A, B, C, D and special characters: * i #. On the back of the keyboard there is a <strong>self-adhesive </strong>tape for easy installation. The <a href=""https://ekostra.com/product/keypad-4×4/"">keyboard</a> is equipped with <strong>8-pin </strong>tape <strong>with a </strong>2.54 mm <strong>grid</strong>, so it can be connected to the main module, such as Arduino or STM32 using connection cables or through a goldpin strip.The keyboard can be used as a data input device.</p> <p><a href=""https://i0.wp.com/botland.store/img/art/inne/17119_2.jpg?ssl=1"" target=""_blank"" rel=""noopener noreferrer""><img class=""aligncenter jetpack-lazy-image jetpack-lazy-image–handled"" src=""https://i0.wp.com/cdn1.botland.store/img/art/inne/17119_2b.jpg?resize=339%2C450&ssl=1"" alt=""Klawiatura membranowa 4×4"" width=""339"" height=""450"" data-recalc-dims=""1"" data-lazy-loaded=""1"" /></a></p> <p> </p> <p><em>Membrane keyboard with 16 keys.</em></p> <h5>How to connect the keyboard</h5> <p>The keyboard can be <a href=""https://ekostra.com/product/keypad-4×4/"">connected</a> in two ways. The layout of the outputs is shown in the figure below.</p> <p><a href=""https://i0.wp.com/botland.store/img/art/inne/17119_3.jpg?ssl=1"" target=""_blank"" rel=""noopener noreferrer""><img class=""aligncenter jetpack-lazy-image jetpack-lazy-image–handled"" title=""Rozkład wyprowadzeń i sposób podłączenia klawiatury numerycznej."" src=""https://i0.wp.com/cdn3.botland.store/img/art/inne/17119_3.jpg?resize=450%2C358&ssl=1"" alt=""Sposób podłączenia klawiatury"" width=""450"" height=""358"" data-recalc-dims=""1"" data-lazy-loaded=""1"" /></a></p> <table width=""422""> <tbody> <tr> <td><strong>Pin Number</strong></td> <td><strong>Description</strong></td> </tr> <tr> <td colspan=""2""><strong>ROWS</strong></td> </tr> <tr> <td>1</td> <td>PIN1 is taken out from 1st  ROW</td> </tr> <tr> <td>2</td> <td>PIN2 is taken out from 2nd  ROW</td> </tr> <tr> <td>3</td> <td>PIN3 is taken out from 3rd  ROW</td> </tr> <tr> <td>4</td> <td>PIN4 is taken out from  4th ROW</td> </tr> <tr> <td colspan=""2""><strong>COLUMN</strong></td> </tr> <tr> <td>5</td> <td>PIN5 is taken out from 1st  COLUMN</td> </tr> <tr> <td>6</td> <td>PIN6 is taken out from 2nd  COLUMN</td> </tr> <tr> <td>7</td> <td>PIN7 is taken out from 3rd  COLUMN</td> </tr> <tr> <td>8</td> <td>PIN8 is taken out from 4th COLUMN</td> </tr> </tbody> </table> <p> </p> <p><em>The layout of the outputs and how to connect the keyboard.</em></p> <h5>Diaphragm keypad specifications</h5> <ul> <li>Maximum Rating: 24 VDC, 30mA</li> <li>Number of buttons: 16</li> <li>Dimensions: 77 x 70 x 0.8 mm</li> <li>Belt length with connector: 83 mm</li> <li>Type of connector: 1 x 8 pin – female raster 2.54 (goldpin connector)</li> </ul> </div> </div>