Industry guru Forrest M. Mims III has created yet another stumper.
The Ultra Simple Sensors Company assigned its engineering staff to
design a circuit that would trigger an LED when a few millimeters
of water is present in a basement or boat. What is the water sensor
behind the puzzle piece? Go to www.Jameco.com/search5 to see if
you are correct and while you are there, sign-up for our free full
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