Thanks for the feedback!
I actually made similar copper traces using tape, following the pattern from the original soil sensor design — two long, parallel strips (not exposed to the soil directly).
After making this change, I do get a slightly higher analog reading on A_OUT — now around 40, whereas before it was only 20–30.
However, I still only get a response when I physically touch the copper strips with my hand, which shouldn’t be the case.
As I understand it, I should be getting:
- High analog values when the probe is in dry soil
- Low analog values when it's in wet soil
But in my case, there's almost no change unless I touch the sensor directly — so it still seems like the capacitive sensing isn’t working properly yet.
