int buzzer = 11;
int led = 4;
const int TRIG_PIN = 6;
const int ECHO_PIN = 7;
const int bulb = 3;
const int DISTANCE_THRESHOLD = 100;
float duration_us, distance_cm;
void setup() {
  pinMode(5,INPUT);
  pinMode(A5,INPUT);
  pinMode(buzzer,OUTPUT);
  pinMode(led,OUTPUT);
  pinMode(TRIG_PIN, OUTPUT); 
  pinMode(ECHO_PIN, INPUT); 
  pinMode(bulb, OUTPUT);
  Serial.begin(9600);

}

void loop()
{
  Serial.println(digitalRead(5));
  if(digitalRead(5)==1){
  digitalWrite(buzzer, HIGH);
  Serial.println("motion detected");
    delay(1000);
  }
  else
  {
  digitalWrite(buzzer, LOW);
  Serial.println("motion not detected");
    delay(1000);
  }
   Serial.println(analogRead(A5));
  if(analogRead(A5)>130)
  {
    digitalWrite(led,LOW);
  Serial.println("its morning");
  }
  else
  {
    digitalWrite(led,HIGH);
  Serial.println("its night");
  }
  digitalWrite(TRIG_PIN, HIGH); 
  delayMicroseconds(10); 
  digitalWrite(TRIG_PIN, LOW);
  duration_us = pulseIn(ECHO_PIN, HIGH); 
  distance_cm = 0.017 * duration_us;
  if(distance_cm < DISTANCE_THRESHOLD)
  { 
  digitalWrite(bulb, HIGH);
  }
  else
  { 
  digitalWrite(bulb, LOW);
  }
  Serial.print("distance: ");
  Serial.print(distance_cm);
  Serial.println(" cm");
  delay(500); 
}