#include<Servo.h>
Servo svl;
const int buzz = 4;
const int sPIR = 5;
const int led = 3;

int mov = 0;

void setup() {
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  pinMode(8, INPUT);
  pinMode(10,OUTPUT);
  svl.attach(9);
  svl.write(0);
  Serial.begin(9600);
  pinMode(buzz,OUTPUT);
  pinMode(led, OUTPUT);
  pinMode(sPIR, INPUT);
}

void loop() {
digitalWrite(2, LOW);
delayMicroseconds(2);
digitalWrite(2, HIGH);
delayMicroseconds(10);
digitalWrite(2, LOW);
delayMicroseconds(2);
long t = pulseIn(8, HIGH);
long cm = t / 58.2;
Serial.println(cm);

//Servo
if(cm <= 50)
{
  svl.write(75);
  delay(500);
}
if(cm > 50)
{
  svl.write(0);
  delay(500);
}

delay(500);
mov = digitalRead(sPIR);
delay(50);
if (mov == HIGH) { 
   digitalWrite(led, HIGH);
   tonos ();
   digitalWrite(led, LOW);
   mov = 0;
   delay(300);
  }
}

void tonos(){
 tone(buzz, 8.18);
 delay(150);
 tone(buzz, 9.72);
 delay(150);
 tone(buzz, 14.57);
 delay(150);
 noTone (buzz);
 delay(1000);

}