4*4 matrix keyboard module

* configuration
* tutorial
* setup

4*4 capacitive matrix keyboard, reading analog quantities and interpreting corresponding key values。

Working voltage: 3.3V~5V

analog sensor

Use PH-2.03P socket

The sensor matches Arduino, Micropython, etc.

Arduino library file downloadopen in new window

When using the sample code, the library files need to be placed in the same folder. (As shown below）

''/*!
 * WMNologo
 * 矩阵键盘
 *
 */
#include "Matrix_buttons.h"
// 创建对象
Matrix_buttons Matrix_buttons1;

// 主程序开始
void setup() {
  Serial.begin(9600);
}
void loop() {
//S信号线接入A0
  Serial.println(Matrix_buttons1.get_follow_sensor(A0));
}
''

The serial port prints the value corresponding to the matrix keyboard

Mind+ expansion library download open in new window (please download the Mind+Uno expansion library when downloading. Currently it only supports Uno motherboards. If you need expansion, you can contact the group leader in the QQ group for development)

If you need to expand, you can contact the group owner in the QQ group for development