ESPHome Water leak detector With a D1 mini board

I’ve been trying to make a simple water leakage detector to put under my kitchen sink. I came out with a pretty simple solution with a simple probe and a D1 mini.

Parts:

• 1 D1 mini board –Buy from AliExpress 
• 1 Probe – Buy from AliExpress
• Some jumper wires
• USB power source
• 100K resistor

Schema:

(Notice that A0 is on the 7th pin and not the 8th like in the diagram)

Sensitivity can be altered by changing this value:

return analog < 2.55;