Creating an array of sensors

To do this, connect the additional pins, as follows:

Arduino pin	Sensor pin
5V	Sensor 1 VCC
GND	Sensor 1 GND
12	Sensor 1 Trig
11	Sensor 1 Echo
5V	Sensor 2 VCC
GND	Sensor 2 GND
10	Sensor 2 Trig
9	Sensor 2 Echo
5V	Sensor 3 VCC
GND	Sensor 3 GND
8	Sensor 3 Trig
7	Sensor 3 Echo

Here is a picture of the three sensors assembled:

Now that the sensors are connected, you'll need to add some functionality to the Arduino code to communicate with all three sensors. Here is that Arduino code:

    #include <NewPing.h>
    #define TRIGGER_PIN1 12
    #define ECHO_PIN1 11
    #define TRIGGER_PIN2 10#define ECHO_PIN2 9
    #define TRIGGER_PIN3 8
    #define ECHO_PIN3 7
    #define MAX_DISTANCE 200
    NewPing sonar1(TRIGGER_PIN1, ECHO_PIN1, MAX_DISTANCE);
    NewPing sonar2(TRIGGER_PIN2, ECHO_PIN2, MAX_DISTANCE);
    NewPing sonar3(TRIGGER_PIN3...