#include <Servo.h>
#define TRIG_PIN_1 9
#define ECHO_PIN_1 8
Servo s1;
void setup() {
s1.attach(5);
Serial.begin(9600);
  
  pinMode(TRIG_PIN_1, OUTPUT);
  pinMode(ECHO_PIN_1, INPUT);
  

}

void loop() {
for (int i =0; i<=90;i++){
  s1.write(i);
  delay(10);
 
}
delay(500);
sensor();
for (int j =90; j>=0;j--){
  s1.write(j);
  delay(10);
 
}
sensor();
  
}
void sensor(){
  float duration1, distance1;
  digitalWrite(TRIG_PIN_1, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN_1, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN_1, LOW);
  
  duration1 = pulseIn(ECHO_PIN_1, HIGH);
  distance1 = duration1 * 0.034 / 2;
  Serial.print("Sensor 1: ");
  Serial.print(distance1);
  Serial.println(" cm");
}