Vcc --> 5V
#define trigPin1 6
#define echoPin1 7
#define trigPin2 8
#define echoPin2 9
long duration, distance, RightSensor,BackSensor,FrontSensor,LeftSensor;
void setup(){
Serial.begin (9600);
pinMode(trigPin1, OUTPUT);
pinMode(echoPin1, INPUT);
pinMode(trigPin2, OUTPUT);
pinMode(echoPin2, INPUT);
}
void loop() {
SonarSensor(trigPin1, echoPin1);
RightSensor = distance;
SonarSensor(trigPin2, echoPin2);
LeftSensor = distance;
Serial.print(LeftSensor);
Serial.print(” – “);
Serial.println(RightSensor);
}
void SonarSensor(int trigPin,int echoPin){
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
}
check https://code.google.com/p/arduino-new-ping/wiki/15_Sensors_Example