Tony - I have been reviewing flood sensors late...
I have been reviewing flood sensors lately. So many ways to do this, but I see several i2c sensors that have the qwiic plug on a micro pcb, which is not practical for the boat bilge scenario. I see some sensors with the dual contacts and waterproof wire, which makes most sense. But I don't see how they work, or what is needed to detect if there is water. Has anyone found a good setup that can handle saltwater and has been reliable for detecting water in the bilge? I have bilge pumps on automatic switches, which is fine. I also have Shelly battery powered flood sensors, but the battery lasts for about 3 months before failing. I would like to wire to esp32 and detect water at about four different locations.
