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Battery-less Flood / Water leak sensor for HA

tom_l August 27, 2020, 5:22pm 3

DIY version:

Wifi Water Leak Detector Share your Projects!

Parts: 1x ESP32 board (or ESP8266, but see extra parts required below) 1x Leak probe. I found these on Aliexpress but there are many ways to DIY this. Just dont use metal for the probes that corrodes easily. 1x LED (optional) and current limiting resistor 1x 5V power supply The connections are pretty simple for the ESP32 board. Just connect one of the sensor wires to a touch capable input and the other sensor wire to ground. Connect the LED (and current limiting resistor) to any other pin (…

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