Im seeking to detect when there is ice in my outdoor unit and then turn up the heaters to melt it. But I came to a problem. How to detect ice? There is no sensor specifically for that. My first thought was why not with soil moisture sensor.
I ran some tests and the result came that it gave around 300-400 in water, 1024 when dry and 1024 when in ice. I dont see how is that so...
So do any one have any ideas how to detect ice and if soil sensor is ok what have I done wrong?