#define PIN_TRIG 3
#define PIN_ECHO 2
void setup() {
Serial.begin(9600);
pinMode(PIN_TRIG, OUTPUT);
pinMode(PIN_ECHO, INPUT);
}
void loop() {
//Start a new measurement:
digitalWrite(PIN_TRIG, HIGH);
delayMicroseconds(10);
digitalWrite(PIN_TRIG, LOW);
// Read the result:
int duration = pulseIn(PIN_ECHO, HIGH);
Serial.print("Distance in CM: ");
Serial.println(duration / 58.5, 0);
Serial.print("Distance in inches: ");
Serial.println(duration / 148);
delay(1000);
}