int trig = 14;
int echo = 27;
int led = 26;
int distance;
void setup() {
  Serial.begin(115200);
  Serial.println("Hello,ESP32");
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(26, OUTPUT);
}

void loop() {
  digitalWrite(trig, HIGH);
  Serial.println("signa went");
  delay(1000);
  digitalWrite(trig, LOW);
  distance=pulseIn(echo,HIGH);
  Serial.println("signal received");
  int c=(distance*0.034/2);
  Serial.println(c);
  delay(1000);
  if (c>200)
{
 digitalWrite(26, HIGH);
 delay(1000);
 }
 else
  {
    digitalWrite(26, LOW);
    delay(1000);
  }
}