Starting a project with VEXcode 123 can be completed in just three steps. 

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First, save the project.

Note: if using a Web-based version of VEXcode 123, the 'Saved' indicator will not show in the Toolbar. View the Loading and Saving VEXcode 123 Projects on a Chrome Browser article for more information on how to save Web-based VEXcode 123 projects.

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Next, connect the device to the 123 Robot and check that the Robot icon is green in the Toolbar.

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Finally, select ‘START’ to start running the project.

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