Arduino

Matrix keyboard 4 * 4 for Arduino

Matrix keyboard 4 * 4 for Arduino

Specifications:
  • Type: matrix keyboard
  • Use: For Arduino
  • The number of buttons: 16
Count Price
From1шт88грн
From6шт86грн
Code: 480
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For many electronic devices that is necessary to organize interaction with the user, the keyboard is one of the most important parts. Sooner or later, we are faced with the fact that the usual buttons that are connected to the ports of Arduino, no longer enough for the task. And then there is a natural desire to use keyboard matrix 4 * 4 for Arduino

Matrix keyboard 4 * 4 for Arduino is organized as follows (see. Fig.).

scheme keyboard matrix 4 * 4

The buttons are grouped in a matrix consisting of a certain number of rows and columns. Each button is thus a clearly defined position (row number and column number.

Matrix keyboard 4 * 4 for Arduino is a fairly economical way to connect a large number of keys to our device. Thanks to its use is possible to significantly reduce the number of ports being spent on maintenance buttons. Thus, for example, to connect matrix keyboard 16 keys requires longer pin 16 and a total of 8 (four columns and four rows). To survey the keyboard can be supplied, for example, the output of the controller connected to the columns of the scanning pulses on the inputs and connected to the lines to determine which key is pressed from the corresponding column.


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