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Official Q&A: VRC 2019-2020: Tower Takeover

Usage Guidelines All Questions

V5 Brain Blown Ports


We have found that different parts of our robot that are isolated from other components of the robot with nylon spacers have issues with blowing a port on the brain. If there is a motor in the isolated section, and it is only connected to the main part of the robot through the wire running the motor it tends to blow a port over time probably due to static build up. We found potential voltage differences with a multi-meter across the different parts of the robot. We have bonded the isolated components of the robot together with a stand of the jumper stock and the issue with blowing ports went away.

My question: To fix the problem we used a stand of wire form the V5 cable to connect the isolated parts of our robot to the main part of our robot. Is it competition legal to have strand from the V5 jumper wire connection different parts of the robot?

Answered by Game Design Committee

No, this is not legal, as it would be considered a violation of R21.

<R21> No modifications to electronic components are allowed. Motors (including the internal PTC or Smart Motor firmware), microcontrollers (including V5 Robot Brain firmware), extension cords, sensors, controllers, battery packs, reservoirs, solenoids, pneumatic cylinders, and any other electrical component or pneumatics component of the VEX EDR platform may NOT be altered from their original state in ANY way.

a. External wires on VEX electrical components may be repaired by soldering, using twist/crimp connectors, electrical tape or shrink tubing such that the original functionality / length is not modified in any way. Wire used in repairs must be identical to VEX wire. Teams may make these repairs at their own risk; incorrect wiring may have undesired results.