const int tri=13;
const int eco=12;
long dur;
float dis;
void setup() {
Serial.begin(115200);
pinMode(tri, OUTPUT);
pinMode(eco, INPUT);
}
void loop() {
dis=getdistance();
Serial.println("Distance :"+String(dis));
delay(1000);
}
long getdistance()
{
digitalWrite(tri, LOW);
delayMicroseconds(2);
digitalWrite(tri, HIGH);
delay(10);
digitalWrite(tri, LOW);
dur=pulseIn(eco, HIGH);
return((dur*0.034/2)+1);
}