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abthree.ino
85 lines (74 loc) · 1.75 KB
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abthree.ino
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int buzzer = 13;
int trigPin = 7;
int echoPin = 6;
int trigPin2 = 10;
int echoPin2 = 9;
int trigPin3 = 11;
int echoPin3 = 12;
void setup(){
Serial.begin (9600);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(trigPin2, OUTPUT);
pinMode(echoPin2, INPUT);
pinMode(trigPin3, OUTPUT);
pinMode(echoPin3, INPUT);
pinMode(buzzer, OUTPUT);
}
void loop()
{
int duration, distance;
digitalWrite (trigPin, HIGH);
delayMicroseconds (10);
digitalWrite (trigPin, LOW);
duration = pulseIn (echoPin, HIGH);
distance = (duration/2) / 29.1;
Serial.print(distance);
Serial.print("cm1");
Serial.println();
if (distance <=30)
{
// Change the number for long or short distances
digitalWrite (buzzer, HIGH);
} else
{
digitalWrite (buzzer, LOW);
}
int duration2, distance2;
digitalWrite (trigPin2, HIGH);
delayMicroseconds (10);
digitalWrite (trigPin2, LOW);
duration = pulseIn (echoPin2, HIGH);
distance2 = (duration/2) / 29.1;
Serial.print(distance2);
Serial.print("cm2");
Serial.println();
if (distance2 <=30)
{
// Change the number for long or short distances
digitalWrite (buzzer, HIGH);
}
else
{
digitalWrite (buzzer, LOW);
}
int duration3, distance3;
digitalWrite (trigPin3, HIGH);
delayMicroseconds (10);
digitalWrite (trigPin3, LOW);
duration = pulseIn (echoPin3, HIGH);
distance3 = (duration/2) / 29.1;
Serial.print(distance3);
Serial.print("cm3");
Serial.println();
if (distance3 <=30)
{
// Change the number for long or short distances
digitalWrite (buzzer, HIGH);
}
else
{
digitalWrite (buzzer, LOW);
}
}
// Code ends here