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


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


Select the generation that you are working with.


Select “Add a device.”


Select "Drivetrain 4-Motor."

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


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.


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


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


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.


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


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

Changing a Drivetrain’s Track Width


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


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


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

Reversing a Drivetrain


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

Deleting a Drivetrain


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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