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Copy pathUltrasonic-LED-Buzzer.ino
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113 lines (57 loc) · 4.14 KB
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Ultrasonic-LED-Buzzer.ino
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113 lines (57 loc) · 4.14 KB
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#define trigPin 7
#define echoPin 6
#define led1 13
#define led2 12
#define led3 11
#define buzzer 5
int sound = 250;
void setup() {
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
pinMode(buzzer, OUTPUT);
}
void loop() {
long duration, distance;
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
if (distance <= 25) {
digitalWrite(led1, HIGH);
sound = 1000;
}
else {
digitalWrite(led1,LOW);
}
if (distance <= 15) {
digitalWrite(led2, HIGH);
sound = 2000 ;
}
else {
digitalWrite(led2, LOW);
}
if (distance < 8) {
digitalWrite(led3, HIGH);
sound = 1500;
}
else {
digitalWrite(led3, LOW);
}
if (distance > 50 || distance <= 0){
Serial.println("Jarak diluar jangkauan!");
noTone(buzzer);
}
else {
Serial.print(distance);
Serial.println(" cm");
tone(buzzer, sound);
}
delay(300);
}