clapsensor.cpp

gistfile1.cpp

int soundSensor = A2;
int relay = A0;
int relay2 = A3;
int relay3 = A4;
int relay4 = A5;
int claps = 0;
long detectionSpanInitial = 0;
long detectionSpan = 0;
boolean clapState = false;
int doubleClap = 0;


//Light sensor 
int photocellPin = A1;     // the cell and 10K pulldown are connected to a0
int LEDbrightness;       

//int delayValue = 100;
int photoSensor = 0;

// sound sample
const int sampleWindow = 50; // Sample window width in mS (50 mS = 20Hz)
unsigned int sample;

void setup() {
  pinMode(soundSensor, INPUT);
  pinMode(relay, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);
  Serial.begin(9600);
}

boolean state = false;
boolean lastState = true;

void loop() {

  /////////////
  // photo sensor
  //////////////////// 

  photoSensor = analogRead(photocellPin) > 523;
  
  /////////////
  // clap sensor
  /////////////////////
  //int sensorState = digitalRead(soundSensor);
  double sensorState = getSoundLevel();
  //Serial.println(sensorState);
  double threshold = 1;

  if (sensorState > threshold)
  {
    if (claps == 0)
    {
      detectionSpanInitial = detectionSpan = millis();
      claps++;
    }
    else if (claps > 0 && millis()-detectionSpan >= 10)
    {
      detectionSpan = millis();
      claps++;
      //Serial.println(" CLAP ADDED!!!!");
    }
  }
 
  if (millis()-detectionSpanInitial >= 600)
  {
    if (claps == 2)
    {
      doubleClap = 1 - doubleClap;
      state = !state;
     // Serial.println("TWO claps!");
      
    }
    claps = 0;
    lastState = state;
  }

  if(lastState == state){
    relayControl();
  }
  
}



void relayControl(){
   /////////////
  // relay control
  /////////////////////
  int delayAmount = 100;
  if(doubleClap == 1 && photoSensor == 0){ 
    digitalWrite(relay, LOW);
        delay(delayAmount);
    digitalWrite(relay2, LOW);
        delay(delayAmount);
    digitalWrite(relay3, LOW);
        delay(delayAmount);
    digitalWrite(relay4, LOW);
    
    //Serial.println("on");
    
  }
  else{ 
    digitalWrite(relay, HIGH);
    digitalWrite(relay2, HIGH);
    digitalWrite(relay3, HIGH);
    digitalWrite(relay4, HIGH);
    //Serial.println("off");
  }; 

  //lastState = !lastState;

}

double getSoundLevel(){
  
   unsigned long startMillis= millis();  // Start of sample window
   unsigned int peakToPeak = 0;   // peak-to-peak level
 
   unsigned int signalMax = 0;
   unsigned int signalMin = 1024;
 
   // collect data for 50 mS
   while (millis() - startMillis < sampleWindow)
   {
      sample = analogRead(soundSensor);
      if (sample < 1024)  // toss out spurious readings
      {
         if (sample > signalMax)
         {
            signalMax = sample;  // save just the max levels
         }
         else if (sample < signalMin)
         {
            signalMin = sample;  // save just the min levels
         }
      }
   }
   peakToPeak = signalMax - signalMin;  // max - min = peak-peak amplitude
   double volts = (peakToPeak * 3.3) / 1024;  // convert to volts

  return volts;
 }