FRCTools

R617       *Powered USB hubs must draw energy from approved sources. Powered USB hubs used on the ROBOT can only be powered through one of the following ways:

A.      an approved COTS USB battery Pack per R602, or

B.      the 5V auxiliary power port on the REV Expansion Hub or REV Control Hub.

Similar Rules

Rule R714
R714       *USB is for vision. Only the following devices may be connected to the ROBOT control system using USB:
Rule R602
R602       *Other batteries are only allowed for peripheral devices and LEDs only. COTS USB battery packs with a capacity of 100Wh or less (27,000mAh at 3.7V), with 5V/5A max output or 12V/5A max output using USB-PD per port, and batteries integral to a self-contained camera (e.g., GoPro style camera) may be used provided they are:
Rule R619
R619       *Do not mix and match power on or between power regulation devices. The following rules must be adhered to when using power on any power regulation device (per R505):
Rule R614
R614       *Energize Power Regulating Devices as specified. All power regulating devices (R505) must be powered per the manufacturer’s instructions and the following table must be true: