First of all i dont really know where to put this topic, so sorry for that.
I have a ph sensor connected to a ESP8266 module.
I have calibrated it and it showing correct values in my test.
Then if i move it over to our outside pond. It’s only showing the value 3.47.
Then when i move it inside it shows the correct values again?
And i cant figure out what the issue is. So i hope anybody can help me here.
Things i have tried:
-Replacing the PH sensor
-Replacing the power adapter
-Replacing the ESP module