R705       *Smartphone android devices used as a ROBOT CONTROLLER must connect to the REV Expansion Hub using USB. If used as a ROBOT CONTROLLER, the smartphone android device must be connected via its integrated micro-USB port to a REV Expansion Hub either:

R701       *Control the ROBOT with a single ROBOT CONTROLLER. ROBOTS must be controlled via 1 programmable ROBOT CONTROLLER. The ROBOT CONTROLLER is the only source of control for the ROBOT actuators and must be comprised of: 

R713       *Always keep control system device software up to date. The following table lists the recommended software versions for each core control electronics module, and a link on how to update this software. Note that some devices have multiple pieces of software that may need to be updated each season, and not all software is available prior to Kickoff each season. Check the FIRST Tech Challenge Blog for release announcements.

R718       *Configure Android devices appropriately. ROBOT CONTROLLER and DRIVER STATION Android devices (smartphones, REV Control Hub, REV Driver Hub) must additionally be configured in the following ways: