#define echo 6
  #define trig 7
  #define outA 4// Red LED
  #define outB 3// yellow LED
  #define outC 2// Green LED
   
  #define MoveSensorPin 5// инфракрасный датчик
  
  float  duration; // time taken by the pulse to return back
  float  distance; // oneway distance travelled by the pulse
  int    MoveSensor; //показания инфракрасного датчик4а

  const int intruderDistance = 10;  // the minimum distance upto which the sensor is able to sense any object

  void setup() 
  { 
    pinMode(trig, OUTPUT);
    pinMode(echo, INPUT);
    
    pinMode(outA, OUTPUT);
    digitalWrite(outA, LOW);
    
    pinMode(outB, OUTPUT);
    digitalWrite(outB, LOW);

    pinMode(outC, OUTPUT);
    digitalWrite(outC, LOW);

    pinMode(MoveSensorPin, INPUT);
    Serial.begin(9600);
  }
  
  void loop() 
  {
  
    time_Measurement();
    distance = (float)duration / 29.1 / 2; //преобразуем время в расстояние в см
    MoveSensor = digitalRead(MoveSensorPin);
    //Serial.println(distance);
    Serial.println(MoveSensor);
    //alarm_condition(); 
    checkMoveSensor();
  }
  
  void time_Measurement()
  { // function to measure the time taken by the pulse to return back
    digitalWrite(trig, LOW);
    delayMicroseconds(2);
  
    digitalWrite(trig, HIGH);
    delayMicroseconds(10);
    digitalWrite(trig, LOW);
  
    duration = pulseIn(echo, HIGH);
  }

  void checkMoveSensor()
  {
    if(MoveSensor=HIGH)
    { digitalWrite(outA,HIGH);
      digitalWrite(outB,HIGH);
      digitalWrite(outC,HIGH);
      }
      else
      {digitalWrite(outA,LOW);
      digitalWrite(outB,LOW);
      digitalWrite(outC,LOW);
      }
  }
  


  void alarm_condition()
  { //function to execute the output commands based on the sensor input
    if(distance<=10)
    { digitalWrite(outA,LOW);
      digitalWrite(outB,LOW);
      digitalWrite(outC,HIGH);
      }
    else if(distance >10 && distance <=20)
    {  digitalWrite(outA,LOW);
      digitalWrite(outB,HIGH);
      digitalWrite(outC,LOW);
      }
      else if(distance >20 && distance <=30)
    {  digitalWrite(outA,HIGH);
      digitalWrite(outB,LOW);
      digitalWrite(outC,LOW);
      }
      else
    {  digitalWrite(outA,LOW);
      digitalWrite(outB,LOW);
      digitalWrite(outC,LOW);
      }
  }