[EricH]

Originally Posted by Vikesrock

Emphasis mine.

The offboard compressor must be run from the robot which means that the robot must have the electronics to properly run it installed which includes a Spike relay and properly installed pressure switch.

It does NOT say that the Spike and pressure switch must be on the robot. They may be with the compressor, on a compressor board. At least, that's the way I see it. (Note: if you do this, make sure that you make it easy to connect the Spike and pressure switch.)