TTP224 4通道觸摸感測器，用繼電器控制交流/直流負載

/*
 * This is the Arduino code for TTP224 4-Channel Capacitive Touch switch.
 * The output pins 10, 11, 12, and 13 will be LOW when keys 1 to 4 are pressed respectively,
 * and the connected relay will go ON.
 * Pressing button 1 turns pin 10 LOW.
 * Pressing button 2 turns pin 11 LOW.
 * Pressing button 3 turns pin 12 LOW.
 * Pressing button 4 turns pin 13 LOW.
 * 
 * Written by Ahmad Nejrabi for Roboja Video
 * Date: December 3, 2017, in Ajax, Ontario, Canada
 * Permission granted to share this code given that this
 * note is kept with the code.
 * Disclaimer: This code is "AS IS" and for educational purposes only.
 * 
 */


 int LD = 200; // Loop Delay. Do not change.

void setup() {
    Serial.begin(9600);
    // out pins
    pinMode(10, OUTPUT);// LED for button 1
    pinMode(11, OUTPUT);// LED for button 2
    pinMode(12, OUTPUT);// LED for button 3
    pinMode(13, OUTPUT);// LED for button 4            

    // input pins
    pinMode(2, INPUT);// Button 1 input pin 2  
    pinMode(3, INPUT);// Button 2 input pin 3  
    pinMode(4, INPUT);// Button 3 input pin 4  
    pinMode(5, INPUT);// Button 4 input pin 5              


    Serial.println("Robojax Test");

}

void loop() {

    // button 1 action
    if(digitalRead(2)){
      Serial.println("Button 1 Touched "); 
      digitalWrite(10, LOW); // Turn the LED ON     
      delay(LD); 
    }else{
      digitalWrite(10, HIGH);// Turn OFF the LED
    }

    // button 2 action
    if(digitalRead(3)){
      Serial.println("Button 2 Touched "); 
      digitalWrite(11, LOW); // Turn the LED ON
      delay(LD); 
    }else{
      digitalWrite(11, HIGH);// Turn OFF the LED
    }   

    // button 3 action
    if(digitalRead(4)){
      Serial.println("Button 3 Touched "); 
      digitalWrite(12, LOW); // Turn the LED ON       
      delay(LD); 
    }else{
      digitalWrite(12, HIGH);// Turn OFF the LED
    }     

   // button 4 action
    if(digitalRead(5)){
      Serial.println("Button 4 Touched "); 
      digitalWrite(13, LOW); // Turn the LED ON      
      delay(LD); 
    }else{
      digitalWrite(13, HIGH);// Turn OFF the LED
    }

}// loop