#define ECHO_PIN 25
#define TRIG_PIN 26
#define pinbuzzer 18
#define LED M
#define LED K
#define LED H

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;
}



void setup() {
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(LED M, OUTPUT);
  pinMode(LED K, OUTPUT);
  pinMode(LED H, OUTPUT);
  Serial.begin(115200);
  pinMode(pinbuzzer, OUTPUT);

}

void loop() {
  float distance = readDistanceCM();
  Serial.print("Measured distance: ");
  Serial.println(readDistanceCM());
  Serial.print("CM");
  Serial.print("warning:");

 if (distance <= 200){
  digitalWrite(LED M, HIGH);
  digitalWrite(LED K, LOW);
  digitalWrite(LED H, LOW);
  delay(500);
  digitalWrite(LED, LOW);
  delay(500);
  tone(pinbuzzer,1000);
  delay(200);
  tone(pinbuzzer, 500);
  delay(200);
  Serial.println("STOP");
}
else if (distance ‹=300) {
  noTone(pinbuzzer);
  digitalWrite(4, LOW);
  digitalWrite(7, HIGH);
  delay(1000);
  digitalWrite(7, LOW);
  delay(500);
  digitalWrite(7, LOW);
  digitalWrite(8, LOW);
  Serial.println("HATI-HATI");
}
else {
  myservo.write(0);