Photo 229 229948-Gadget Freak Case 154 Table Saw Quick Clean Up
Latest Gadget Freak! Table Saw quick cleanup, simple Hall effect sensor project -

When John Dawson turns on his table saw he wants a Shop-Vac to automatically turn on, too. He might have controlled a duplex outlet from a wall switch, but where’s the fun in that? Instead, he uses a Hall-Effect sensor to detect current flow in the saw’s power cord and then turn on the vacuum cleaner via a relay. John’s design adapts well to other control situations, too. Don’t get sucked into a simple switch circuit.

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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