Phidgets Rover Kit

Move

In this step, you will learn how to move your rover forward and backward.

You will need to create a new project called PhidgetsRover and import the Phidgets Library.

If you’ve forgotten how to do this, revisit the Configure section from the Getting Started Kit.

Write code (Java)

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package phidgetsrover;

//Add Phidgets Library
import com.phidget22.*;

public class PhidgetsRover {
    public static void main(String[] args) throws Exception {

        //Connect to wireless rover
        Net.addServer("", "192.168.100.1", 5661, "", 0);

        //Create
        DCMotor leftMotors = new DCMotor();
        DCMotor rightMotors = new DCMotor();

        //Address
        leftMotors.setChannel(0);
        rightMotors.setChannel(1);

        //Open
        leftMotors.open(5000);
        rightMotors.open(5000);

        //Move forward at full speed
        leftMotors.setTargetVelocity(1);
        rightMotors.setTargetVelocity(1);

        //Wait for 1 second
        Thread.sleep(1000);

        //Stop motors
        leftMotors.setTargetVelocity(0);
        rightMotors.setTargetVelocity(0);
    }
}
  
  
//Add Phidgets Library
import com.phidget22.*;

public class PhidgetsRover {
    public static void main(String[] args) throws Exception {

        //Connect to wireless rover
        Net.addServer("", "192.168.100.1", 5661, "", 0);

        //Create
        DCMotor leftMotors = new DCMotor();
        DCMotor rightMotors = new DCMotor();

        //Address
        leftMotors.setChannel(0);
        rightMotors.setChannel(1);

        //Open
        leftMotors.open(5000);
        rightMotors.open(5000);

        //Move forward at full speed
        leftMotors.setTargetVelocity(1);
        rightMotors.setTargetVelocity(1);

        //Wait for 1 second
        Thread.sleep(1000);

        //Stop motors
        leftMotors.setTargetVelocity(0);
        rightMotors.setTargetVelocity(0);
    }
}
  

Write code (Python)

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#Add Phidgets library
from Phidget22.Phidget import *
from Phidget22.Net import *
from Phidget22.Devices.DCMotor import *
#Required for sleep statement
import time

#Connect to your wireless rover
Net.addServer("", "192.168.100.1", 5661, "", 0)

#Create
leftMotors = DCMotor()
rightMotors = DCMotor()

#Address
leftMotors.setChannel(0)
rightMotors.setChannel(1)

#Open
leftMotors.openWaitForAttachment(5000)
rightMotors.openWaitForAttachment(5000)

#Motors at full speed
leftMotors.setTargetVelocity(1)
rightMotors.setTargetVelocity(1)

#Wait for 1 second
time.sleep(1)

#Stop motors
leftMotors.setTargetVelocity(0)
rightMotors.setTargetVelocity(0)
  

Write code (C#)

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//Add Phidgets Library
using Phidget22;

namespace PhidgetsRover {
    class Program {
        static void Main(string[] args) {

            //Connect to wireless rover
            Net.AddServer("", "192.168.100.1", 5661, "", 0);

            //Create
            DCMotor leftMotors = new DCMotor();
            DCMotor rightMotors = new DCMotor();

            //Address
            leftMotors.Channel = 0;
            rightMotors.Channel = 1;

            //Open
            leftMotors.Open(5000);
            rightMotors.Open(5000);

            //Move forward at full speed
            leftMotors.TargetVelocity = 1;
            rightMotors.TargetVelocity = 1;

            //Wait for 1 second
            System.Threading.Thread.Sleep(1000);
            
            //Stop motors
            leftMotors.TargetVelocity = 0;
            rightMotors.TargetVelocity = 0;
        }
    }
}
  

Write code (Swift)

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NOTE: the code below assumes you've created a single button and linked it to an IBAction named moveRover

  
import Cocoa
//Add Phidgets Library
import Phidget22Swift

class ViewController: NSViewController {

    //Create
    let leftMotors = DCMotor()
    let rightMotors = DCMotor()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        do{
            //Connect to wireless rover
            try Net.addServer(serverName: "", address: "192.168.100.1", port: 5661, flags: 0)
            
            //Address
            try leftMotors.setChannel(0)
            try rightMotors.setChannel(1)
            
            //Open
            try leftMotors.open()
            try rightMotors.open()
            
        }catch{
            print(error)
        }
        
    }

    @IBAction func moveRover(_ sender: Any) {
        do{
            //Move forward at full speed
            try leftMotors.setTargetVelocity(1.0)
            try rightMotors.setTargetVelocity(1.0)
            
            //Wait for 1 second
            sleep(1)
            
            //Stop motors
            try leftMotors.setTargetVelocity(0.0)
            try rightMotors.setTargetVelocity(0.0)
            
        }catch{
            print(error)
        }
    }
}
  

Practice

  1. Change your Target Velocity to 0.5 for both motors.
  2. Change the sleep duration from 1 second to 2 seconds.
  3. Change your Target Velocity to -1.0 for both motors.
Troubleshoot
  1. Did your rover turn in a circle instead of moving forwards? If so, you can fix this by swapping the red and black wires on input 0. See image below.
  2. Did your rover move backwards instead of forward? If so, you can fix this by changing your target velocity to -1.0 for both motors.
  3. Make sure everything is plugged in properly and your VINT Hub is connected to your computer.
  4. Stop running other programs that are using your Phidgets before running a program.

If you are still having issues visit Advanced Troubleshooting

What are Phidgets?

Phidgets are programmable, modular USB devices, either sensors or controllers that you can connect together. Simply write code in your favorite language and solve real-world problems.

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