#include "Servo.h"
#define ECHO_PIN 2
#define TRIG_PIN 3
#define SERVO_PIN 5
Servo servo;

void setup() {
  Serial.begin(115200);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  servo.attach(SERVO_PIN);
}

float readDistanceCM() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034 / 2;
}

bool tekan=false;

void loop() {
  float distance = readDistanceCM();

  bool isNearby = distance < 200;
  digitalWrite(LED_BUILTIN, isNearby);

  if (isNearby && !tekan){
    servo.write(145);
    tekan=true;
  } else{
    servo.write(90);
  }

  if (distance >= 200){
    tekan=false;
  }

  Serial.print("Measured distance: ");
  Serial.println(readDistanceCM());

  delay(100);

  Serial.println();


}