Touch Kit 电容触摸板转USB输入测试

Touch Kit 电容触摸板套件 (DFR0129)搭配 Arduino Pro Micro 实现了触摸转USB键盘输入。




接线方面如下：

GND  <------->  GND
VCC   <------->  RAW
SDA   <------->  D3
SCL    <------->  D4
IRQ    不连接
ADDR 不连接

/*
  TouchWheel.pde
  MPR121 WhellPad Example Code

  by:Waiman Zhao
  Mail:Binpower@foxmail.com
  created on: 11/2/14
  license: CC-SA 3.0

  Hardware: 3.3V Arduino Pro Mini
           SDA -> A4
           SCL -> A5
           IRQ -> D2
*/


#include <Wire.h>
#include <mpr121.h>
#include "Keyboard.h"

int key = 0;


// =========  setup  =========
void setup()
{
  //  initialize function
  Serial.begin(19200);
  Wire.begin();
  CapaTouch.begin();
  // initialize control over the keyboard:
  Keyboard.begin();

  delay(500);
  Serial.println("START");
}


// =========  loop  =========
void loop()
{
  key = CapaTouch.keyPad();

  if (key == 11)
  { Serial.print("key:");
    Serial.println("*");
    Keyboard.write('*');
  }
  else if (key == 12)
  {
    Serial.print("key:");
    Serial.println("#");
    Keyboard.write('#');
  }
  else if (key >= 0) {
    Serial.print("key:");
    Serial.println(key);
    Keyboard.write('0' + key);
  }
  delay(200);
}






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