int foto = 4;  
int val;  
int volt;  
  
void setup(){  
//FOTORESISTENCIA
  Serial.begin(115200);  
  pinMode(foto, INPUT);
  pinMode(4,INPUT_PULLUP);  
//SENSOR ULTRASÓNICO
  Serial.begin(115200);  
  pinMode(foto, INPUT);  
  pinMode(2,INPUT_PULLUP);  
}  
void loop(){  

//FOTORESISTENCIA
  int x = digitalRead(4);  
  
  if(x==1){  
  val=analogRead(foto);  
  volt=val*3300/4095;  
  Serial.print("Fotoresistencia: ");
  Serial.print(val);  
  Serial.print(" ");  
  Serial.print(volt);  
  Serial.println("mV");  
  delay(250);  
  }  
  else{  
    Serial.println("Apagado");  
    delay(250);  
  }  
}

//SENSOR ULTRASÓNICO
int foto = 2;  
int val;  
int volt; 
int t = 100; 
  
  int x = digitalRead(2);  
  int t = 5; 
  
  if(x==0){  
  val=analogRead(foto);  
  volt=val*3300/4095;  
//Primer grupo 
  int a1=volt; 
  delay(t); 
  int b1=volt; 
  delay(t); 
  int c1=volt; 
  delay(t);   
  int d1=volt; 
  delay(t); 
  int e1=volt; 
  delay(t); 
  int f1=volt; 
  delay(t); 
  int g1=volt; 
  delay(t); 
  int h1=volt; 
  delay(t); 
  int i1=volt; 
  delay(t); 
  int j1=volt; 
  delay(t); 
//Segundo grupo 
  int a2=volt; 
  delay(t); 
  int b2=volt; 
  delay(t); 
  int c2=volt; 
  delay(t);   
  int d2=volt; 
  delay(t); 
  int e2=volt; 
  delay(t); 
  int f2=volt; 
  delay(t); 
  int g2=volt; 
  delay(t); 
  int h2=volt; 
  delay(t); 
  int i2=volt; 
  delay(t); 
  int j2=volt; 
  delay(t); 
//Tercer grupo 
  int a3=volt; 
  delay(t); 
  int b3=volt; 
  delay(t); 
  int c3=volt; 
  delay(t);   
  int d3=volt; 
  delay(t); 
  int e3=volt; 
  delay(t); 
  int f3=volt; 
  delay(t); 
  int g3=volt; 
  delay(t); 
  int h3=volt; 
  delay(t); 
  int i3=volt; 
  delay(t); 
  int j3=volt; 
  delay(t); 
//Cuarto grupo 
  int a4=volt; 
  delay(t); 
  int b4=volt; 
  delay(t); 
  int c4=volt; 
  delay(t);   
  int d4=volt; 
  delay(t); 
  int e4=volt; 
  delay(t); 
  int f4=volt; 
  delay(t); 
  int g4=volt; 
  delay(t); 
  int h4=volt; 
  delay(t); 
  int i4=volt; 
  delay(t); 
  int j4=volt; 
  delay(t); 
//Quinto grupo 
  int a5=volt; 
  delay(t); 
  int b5=volt; 
  delay(t); 
  int c5=volt; 
  delay(t);   
  int d5=volt; 
  delay(t); 
  int e5=volt; 
  delay(t); 
  int f5=volt; 
  delay(t); 
  int g5=volt; 
  delay(t); 
  int h5=volt; 
  delay(t); 
  int i5=volt; 
  delay(t); 
  int j5=volt; 
  delay(t); 
  int k1=a1+b1+c1+d1+e1+f1+g1+h1+i1+j1; 
  int k2=a2+b2+c2+d2+e2+f2+g2+h2+i2+j2; 
  int k3=a3+b3+c3+d3+e3+f3+g3+h3+i3+j3; 
  int k4=a4+b4+c4+d4+e4+f4+g4+h4+i4+j4; 
  int k5=a5+b5+c5+d5+e5+f5+g5+h5+i5+j5; 
  int w1=k1+k2+k3+k4+k5; 
  float y1=w1/50; 
  Serial.println("Sensor ultrasónico: ")
  Serial.print(y1); 
  Serial.print("mV"); 
  Serial.println(" ");
  delay(800);  
  }  
  else{  
    Serial.println("Apagado");  
    delay(800);  
  }  
}