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int echoPin1 =2;
int initPin1 =3;
int distance1 =0;
//Sonar 2
int echoPin2 =6;
int initPin2 =7;
int distance2 =0;
//Sonar 3
int echoPin3 =8;
int initPin3 =9;
int distance3 =0;
//Sonar 4
int echoPin4 =12;
int initPin4 =13;
int distance4 =0;
void setup() {
pinMode(initPin1, OUTPUT);
pinMode(echoPin1, INPUT);
pinMode(initPin2, OUTPUT);
pinMode(echoPin2, INPUT);
pinMode(initPin3, OUTPUT);
pinMode(echoPin3, INPUT);
pinMode(initPin4, OUTPUT);
pinMode(echoPin4, INPUT);
Serial.begin(9600);
}
void loop() {
distance1 = getDistance(initPin1, echoPin1);
printDistance(1, distance1);
delay(150);
distance2 = getDistance(initPin2, echoPin2);
printDistance(2, distance2);
delay(150);
distance3 = getDistance(initPin3, echoPin3);
printDistance(3, distance3);
delay(150);
distance4 = getDistance(initPin4, echoPin4);
printDistance(4, distance4);
delay(500);
}
int getDistance (int initPin, int echoPin){
digitalWrite(initPin, HIGH);
delayMicroseconds(10);
digitalWrite(initPin, LOW);
unsigned long pulseTime = pulseIn(echoPin, HIGH);
int distance = pulseTime/58;
return distance;
}
void printDistance(int id, int dist){
Serial.print(id);
if (dist >= 120 || dist <= 0 ){
Serial.println(" Out of range");
}else
for (int i = 0; i <= dist; i++) {
Serial.print("-");
}
Serial.print(dist, DEC);
Serial.println(" cm");
}
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