#3 Sensor jarak

Sensor jarak menggunakan ultrasonic

Kode Program:

volatile int a;
float checkdistance_22_23() {  digitalWrite(22, LOW);  delayMicroseconds(2);  digitalWrite(22, HIGH);  delayMicroseconds(10);  digitalWrite(22, LOW);  float distance = pulseIn(23, HIGH) / 58.00;  delay(10);  return distance;}
void setup(){  Serial.begin(9600);  a = 0;  Serial.println("mengukur jarak menggunakan ultrasonic");  Serial.println("===============================");  pinMode(22, OUTPUT);  pinMode(23, INPUT);}
void loop(){  a = checkdistance_22_23();  Serial.print("jarak =");  Serial.println(a);  delay(500);
}

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