int PWM = A0;
int sensor1 = A1;//SENSOR 1
int sensor2 = A2; //SENSOR 2
int generator1 = 9;//GERADOR DE ONDA QUADRADA 1
int generator2 = 6;//GERADOR DE ONDA QUADRADA 2
int tensao1 = 4;//CORTE NA TESÃO DA BOBINA 1
int tensao2 = 5;//CORTE NA TESÃO DA BOBINA 2

int onoff1;
int onoff2;

int frequency1;
int frequency2;

void setup()
{
pinMode(PWM, INPUT);
pinMode(sensor1, INPUT);
pinMode(sensor2, INPUT);
pinMode(generator1, OUTPUT);
pinMode(tensao1, OUTPUT);
pinMode(generator2, OUTPUT);
pinMode(tensao2, OUTPUT);

} //end setup

 void loop()
  {

     if((analogRead (sensor1) == 1) && (analogRead (sensor2) == 0))

  {
    
if(digitalRead(tensao1)== 1)
  
  {

    frequency1 = (analogRead(PWM) * 10);
    tone(generator1, frequency1);

  }
  

    if(digitalRead(tensao1)== 0)
  {

   noTone(generator1);

  }

   onoff1 = analogRead(A1);
   digitalWrite(tensao1, onoff1);

  }

  
if((analogRead (sensor2) == 1) && (analogRead (sensor1) == 0))
  
{
  if(digitalRead(tensao2)== 1)
  {

  frequency2 = (analogRead(PWM) * 10);
  tone(generator2, frequency2);

  }
  
if(digitalRead(tensao2)== 0)
 
  { 

  noTone(generator2);

  }

  onoff2 = analogRead(A1);
  digitalWrite(tensao2, onoff2);

  }

 }