[BBray_T1296]

Originally Posted by BBray_T1296

Yes, but they cannot have anything to do with actuation. IE no PWM/relay/can/etc control over motors.

They can collect sensor data (such as camera or otherwise) and perform computation to offload roboRIO resources though.

Originally Posted by 2015 manual 4.8-R44

CUSTOM CIRCUITS shall not directly alter the power pathways between the ROBOT battery, PDP, motor controllers, relays,
motors and actuators (per R18), pneumatic solenoid valves, or other elements of the ROBOT control system (items explicitly mentioned in R55). Custom high impedance voltage monitoring or low impedance current monitoring circuitry connected to the
ROBOT’S electrical system is acceptable, if the effect on the ROBOT outputs is inconsequential.

An arduino/equiv is considered a custom circuit.

Obligatory "this year's rules aren't necessarily next year's" but this rule has been in here for a while.