<here is my file>

Main.ino

+
+const int trigPin = 12;
+const int echoPin = 11;
+
+const int trigPin2 = 8;
+const int echoPin2 = 9;
+
+const int motor = 3;
+
+const int button = 13;
+
+const int potentiometer = A0;
+
+long duration2;
+long duration;
+
+int distance;
+int distance2;
+
+int volume;
+Int volumeScaled;
+
+void setup() {
+
+//US1
+pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
+pinMode(echoPin, INPUT); // Sets the echoPin as an Input
+
+//US2
+pinMode(trigPin2, OUTPUT); // Sets the trigPin as an Output
+pinMode(echoPin2, INPUT); // Sets the echoPin as an Input
+
+pinMode(potentiometer, INPUT);
+pinMode(button, INPUT_PULLUP);
+pinMode(motor, OUTPUT);
+
+Serial.begin(9600); // Starts the serial communication
+}
+
+  void loop() {
+
+  if(digitalRead(button)== HIGH) {
+      // Clears the trigPin
+      digitalWrite(trigPin2, LOW);
+      digitalWrite(trigPin, LOW);
+      delayMicroseconds(2);
+      
+      // Sets the trigPin on HIGH state for 10 micro seconds
+      digitalWrite(trigPin2, HIGH);
+      digitalWrite(trigPin, HIGH);
+      
+      delayMicroseconds(10);
+      digitalWrite(trigPin2, LOW);
+      digitalWrite(trigPin, LOW);
+      
+      // Reads the echoPin, returns the sound wave travel time in microseconds
+      duration2 = pulseIn(echoPin2, HIGH);
+      duration = pulseIn(echoPin, HIGH);
+
+      //Potentiometer
+      volume = analogRead(potentiometer);
+      volumeScaled = volume* 0.25;
+      
+      // Calculating the distance
+      distance = duration * 0.034/2;
+      distance2 = duration2 * 0.034/2;
+
+      if (distance2 > 30) {
+        Serial.println("No output");
+      }111    
+ 
+      if (distance2 < 30)   {
+             if (distance < 75) {
+                      Serial.println(distance);
+                      analogWrite(motor, volumeScaled);  
+                      delay(distance * 15);
+          }
+
+      else{
+      }
+  }
+
+  else{
+    digitalWrite(motor,LOW);
+  }
+ 
+  }
+ 
+  if(digitalRead(button)== LOW) {
+    digitalWrite(motor, LOW);
+    }
+    
+  }
+
+