nimblewillo - Has anyone looked at using temper...
Has anyone looked at using temperature sensors to measure bilge water depth? I've been thinking it could be an interesting way to do it with solid state hardware. (no switch to foul) I believe that it's very rare that air temp matches water temperature.
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Why not just use two probes connected to an ESP32? One probe outputs a signal voltage, and the other probe receives it on a digital pin if both probes are in the water. It's a simple concept that's been used for years to detect water levels. The feed probe should be at the same level or above the sense probe so you're not constantly feeding a voltage into the water if it's not quite covering both.
I'm working on multiple methods. Probes tend to corrode.
DS18B20s are dirt cheap, reliable and I have a bunch of them. Float switches are cheap and fairly decent but I have had them get fouled. (I had one get foamed and drain a battery once for example) etape is interesting to me, but it's gonna cost around $100 to get one sized for my really deep bilge. That's fine soo, but I figured I'd mess with some ideas.
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Was the etape the sealed verion? for the temp sensor, I was thinking of using 4-5 of them at different heights. The difference between them should be indicative. I have a very deep bilge in my keel...
The nice thing about the temp sensors is that multiple units all use the same data bus line - it's just a matter of wiring them all together. Each has a unique serial attached to the data feed so they can be identified.