The dust collector in a wood shop is a shared resource. In the simplest systems, you connect a single hose to whichever machine you happen to be using. This stops being fun on your first project. The next step up incorporates an array of ducts that connect all machines to the dust collector. This requires “blast gates” at each machine so that only the one being operated is open thus maximizing air flow. This is what I have used in all my previous shops. Whenever you move to a new machine, you close the blast gate of the last machine and open the blast gate of the next machine. Over the years, this too becomes tiresome. The ultimate solution is an automated system that detects which machine you are using and opens only the blast gate connected to it and turns on the dust collector. A couple of years ago, I design such a gate fashioned from an off the shelf blast gate coupled to a pneumatic actuator and control valve. This afternoon, I connected the first of seven to my bandsaw. Open and close times are fully adjustable. I plan to slow the close enough to allow the dust collector to clear the ducts before shutting down.