Configuring a 4-Motor Drivetrain (No Gyro) in VEXcode IQ (1st gen)

Using VEX IQ (2nd generation)? See this article.

When starting to program with VEXcode IQ, blocks from the Drivetrain category will not appear in the Toolbox until a Drivetrain has been configured.

You can only configure one Drivetrain per project.

If you are configuring a Drivetrain with a Gyro Sensor, see this article. 

This article covers the following options when configuring a 4-Motor Drivetrain without a Gyro.


Adding a Drivetrain

Icon representing device selection for VEX IQ Robotics platform, used in documentation and tutorials for configuring robots in educational settings.

To configure a Drivetrain, select the Devices button to open the Devices window.

Screenshot of VEXcode IQ interface showing the Robot Config section, highlighting options for configuring VEX IQ robotics components and programming settings for educational robotics projects.

Select the generation that you are working with.

Screenshot of VEXcode IQ software interface showing the Robot Config section, featuring options for configuring robot settings and components for VEX IQ Robotics platform, designed for educational use and beginner robotics enthusiasts.

Select “Add a device.”

Screenshot of the VEXcode IQ interface displaying the Robot Config section, showcasing options for configuring VEX IQ robotics components and settings for programming educational robotics projects.

Select "Drivetrain 4-Motor."

Note: To configure a 2-Motor Drivetrain (No Gyro), see this article.

Diagram showing the configuration of a VEX IQ robot drivetrain with four motors, illustrating the arrangement and connections for optimal performance in educational robotics projects.

Select which ports the Left Motors and Right Motors are attached to on the VEX IQ Brain. Ports that are already configured for other devices will be unavailable.

Diagram illustrating the configuration of a VEX IQ robot drivetrain with four motors and instructions for disabling the gyro sensor, relevant to educational robotics and programming resources.

Turn the Gyro off by un-checking the Gyro box.

Screenshot of VEXcode IQ interface showing the Robot Config section, displaying options for configuring and programming VEX IQ robotics components for educational and beginner robotics projects.

Once the Drivetrain has been configured, select “Done” to submit the device to the configuration or “Cancel” to return back to the Devices menu.

Note: Selecting “Cancel” will undo any changes you have made to the device and will not be a part of the configuration.


Changing a Drivetrain’s Port Numbers

Icon representing the selection of plug configurations for VEX IQ robotics, illustrating options for connecting components in the Robot Config section of the knowledge base.

You can change the port numbers for the Left Motors or Right Motors in the Drivetrain by selecting the device’s plug icon in the top right corner of the Options screen.

Diagram showing the configuration of a VEX IQ drivetrain with four motors, illustrating how to change the motor ports for optimal performance in robotics projects.

Select a different port on the Port Selection screen and the port number will turn green. Then, select Done to submit the change.


Changing a Drivetrain’s Wheel Size

Diagram illustrating how to set the wheel size for a VEX IQ robot, showing options and configurations for adjusting wheel dimensions to optimize performance in educational robotics projects.

You can change the wheel size for the Drivetrain by selecting the drop down menu under “Wheel Size.”


Changing a Drivetrain’s Track Width

Diagram showing how to set the track width for a 4-wheel VEX IQ robot, illustrating the adjustment process for optimal robot configuration in educational robotics projects.

You can change the size of the track width for the Drivetrain by entering the values in the number box and by selecting the drop down menu under “Track Width.” The track width is the measurement between the middle of the front left wheel to the middle of the front right wheel.


Changing the Drivetrain's Wheel Base

Diagram illustrating the set wheelbase configuration for a VEX IQ robot, showing the placement of wheels and components for optimal performance in educational robotics projects.

You can change the wheelbase for the Drivetrain by entering the values in the number box and by selecting the drop-down menu under “Wheelbase.” The wheelbase is the measurement between the middle of the front wheel to the middle of the back wheel on each side.


Changing a Drivetrain’s Gear Ratio

Screenshot of the VEXcode IQ interface showing the Robot Config section, displaying options for configuring VEX IQ robot components and settings for programming and building educational robotics projects.

You can change the gear ratio for the Drivetrain by entering values in the “Input” and “Output” boxes.


Reversing a Drivetrain

Screenshot of VEXcode IQ interface displaying the Robot Config section, showcasing options for configuring the VEX IQ robotics platform, including settings for motors, sensors, and robot design configurations.

The Options screen also allows the direction of the Drivetrain to be reversed.


Deleting a Drivetrain

Screenshot of VEXcode IQ interface displaying the Robot Config section, showcasing options for configuring and programming VEX IQ robots, designed for educational use and beginner robotics enthusiasts.

A Drivetrain can be deleted by selecting the “Delete” option at the bottom of the screen.

For more information, help, and tips, check out the many resources at VEX Professional Development Plus

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