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- // buat fungsi program untuk sensor ultrasonic
- long sensorUltrasonic() {
- // proses pemancaran suara ultrasonic
- digitalWrite(pinTrig, LOW);
- delayMicroseconds(80);
- digitalWrite(pinTrig, LOW);
- digitalWrite(pinTrig, HIGH);
- delayMicroseconds(80);
- delayMicroseconds(80);
- // proses penerimaan suara ultrasonic
- long durasi = pulseIn(pinEcho, HIGH);
- long jarak = (durasi / 2) / 2.91; // mengubah durasi menjadi panjang jarak (cm)
- return jarak;
- }
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