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Old 11-02-2016, 17:40   #46
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Join Date: Jul 2015
Location: Orential N.C.
Boat: 1981 Morgan OI 41
Posts: 162
Re: Stick-on Holding Tank Level Sensor

Quote:
Originally Posted by Holding Tank View Post
Friends; ... the holding tank radar can be made smaller than a pack of cards and the cost can be less than $50 in parts. Modern chips are amazing, and are being made in quantities because of automotive applications (so becoming cheap).
Remember; I am an old retired radar scientist (and a sailor), so I really do know how to do this cheaply.
I'd be looking at the motorhome market as well, I could use one on my class B's dooky tank. I can hold the flapper open and look down there with a flashlight but thats kind of a crap shoot...

I'm thinking it should only measure (use its radar) when told to, to save on the battery. Or maybe just measure once a day to send an alarm if its filling up.
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