[EricH]

Originally Posted by Wolfgang

If you have any solenoids at all on your bot, you must have the compresser. The compresser compresses air for your robot's solenoids to function. If you don't have any other neumatics, I am pretty sure that you don't need the compresser at all.

It is entirely and explicitly legal to have the compressor offboard of your robot. You have to charge your tanks with it, but it does not have to be on your robot.