Ultrasonic Distance Sensor

Specs (Click to Open)

Ultrasonic Specs
Function	Min	Nom	Max
Input Voltage	—	—	5VDC
Current	—	15mA	—
Range	2cm	—	400cm
Measure Angle	—	15˚	—
Frequency	—	40Hz	—
Trigger Pulse	—	10µs TTL	—

Programming

//import the Ultrasonic Library
import edu.wpi.first.wpilibj.Ultrasonic;

//Create the Ultrasonic Object
private Ultrasonic sonar;

//Constuct a new instance
sonar = new Ultrasonic(Trigger, Echo);

//Create an accessor method
public double getDistance()
{
    return sonar.getRangeInches();
    // or can use
    return sonar.getRangeMM();
}

The accessor methods will then output the range in either inches or mm.

Note

The valid digital pairs for Trigger and Echo pins are (Trigger, Echo) (0,1), (2,3), (4,5), (6,7), (8, 9), (10,11)

//Include the Ultrasonic Library
#include "frc/Ultrasonic.h"

//Constructors
frc::Ultrasonic sonar{Trigger, Echo};

//Create an accessor function
double getDistance(void)
{
    return sonar.GetRangeInches();
    // or can use
    return sonar.GetRangeMM();
}

The accessor functions will then output the range in either inches or mm.

Note

The valid digital pairs for Trigger and Echo pins are (Trigger, Echo) (0,1), (2,3), (4,5), (6,7), (8, 9), (10,11)