//Sensor Ultrasonic

int trig= 19;

int echo= 18;

float ss= 0.034;

long t;

float jarak_cm;

void setup() {

Serial.begin(115200);

pinMode(trig, OUTPUT);

pinMode(echo, INPUT);

}

void loop() {

digitalWrite(trig, LOW);

delayMicroseconds(4);

digitalWrite(trig, HIGH);

delayMicroseconds(10);

digitalWrite(trig, LOW);

t = pulseIn(echo,HIGH);

jarak_cm=t*ss/2;

Serial.println("jarak= ");

Serial.println(jarak_cm);

delay(1000);

}