[aprssig] water level gauge for APRS

Robert Bruninga bruninga at usna.edu
Sun Aug 21 16:17:32 EDT 2016

Thanks steve,

I was confused by the waterproof sensor as to what was in the sensor and
what was that other circuit board shown in the Ebay listing?  Is that just
a micro do do something with the time pulse you get back, or does the $7
just get the sensor and it works like you describe as is.  We would tnen
add a packet generator cpu, but we can all do that.

So can you clarify what are the wires coming out of the sealed unit?  and
what is the circut card shown?


On Sat, Aug 20, 2016 at 8:53 PM, Steve Dimse <steve at dimse.com> wrote:

> > On Aug 20, 2016, at 8:03 PM, Jason KG4WSV <kg4wsv at gmail.com> wrote:
> >
> > A better question is what do the component datasheets say about long
> term operation in a 100% humidity environment?
> That's why I'd spend the extra money for the waterproof one, even for a
> throwaway it isn't that much more. Then it is easy to separate the
> electronics from the water.
> I used a a pair of reducers to take the ID of the 2" pipe down to the
> diameter of the sensor (3/4" if I remember right was just a little tight
> and was sanded out), then a 2" F-F coupler and a watertight junction box
> for the battery and electronics. Potted out the top where the sensor
> attaches with some silicon caulk. All of this was shamelessly stolen from
> the Flood Advisor mechanicals.
> Steve K4HG
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