Error: expected constructor, destructor, or type conversion before '(' token conversion

Projects Programming
1

Hello I am Making a project involving the 'HC - SR04' ultrasonic sensor and the 'HC - 05' Bluetooth
module. I am having the following error in the code. When I didn't add the Bluetooth module in the code it was working just fine. Help will be appreciated.
CODE:

int Trig = 7;
int echo = 6;
int Led = 12;
long Time;
int distance;
int VALUE;
void setup()
{
  pinMode(Trig,OUTPUT);
  pinMode(echo, INPUT);
  pinMode(Led, OUTPUT);
  pinMode(11, OUTPUT);

}

void loop()
{
  Serial.begin(9600);
  if (Serial.available() > 0)
  VALUE = Serial.read();
  if(VALUE == '1'){
    digitalWrite(Led, HIGH);
  }  else if(VALUE == '0'){
    digitalWrite(Led, LOW);
  }
  }
  digitalWrite(Trig, LOW);
  delay(2);
  digitalWrite(Trig, HIGH);
  delay(10);
  digitalWrite(Trig, LOW);
  
  Time = pulseIn(echo, HIGH);
  distance = Time*0.034/2;
  
  
  if(distance <= 30){
    digitalWrite(Led, HIGH);
    delay(200);
    digitalWrite(Led, LOW);
    delay(200);
    digitalWrite(Led, HIGH);
    Serial.println("INTRUDER ALERT!!");
    digitalWrite(11, HIGH);}
  
}

Thank you.

2

You've got an extra } that needs to go...

3 
void loop()
{
   Serial.begin(9600);
   if (Serial.available() > 0)
      VALUE = Serial.read();
   if (VALUE == '1')
   {
      digitalWrite(Led, HIGH);
   }
   else if (VALUE == '0')
   {
      digitalWrite(Led, LOW);
   }
} // <<<<<<<<<<<<<<<<<<<<   extra } closes loop() early
digitalWrite(Trig, LOW);
delay(2);
digitalWrite(Trig, HIGH);
delay(10);
digitalWrite(Trig, LOW);

Use the very handy IDE autoformat tool (ctrl-t or Tools, Auto format) and you will see the above. Note the indenting plainly shows where you have the extra closing curly bracket pointed out by member @red_car. Since the loop() function is closed early, all the rest of the code is outside of a function which is an error.

4

Thank you very much. Will do the following changes.

5

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