Today I made my soil moisture connection a bit more permanent.
This is what I use to send data to my "Plant" info in my home automation project. I'm sending air temperature, humidity via a DHT22 (or DHT11.. I'm not really sure which one I use). The info is send to my webserver through my ESP8266-12 and store in a mySql database. To meassure soil moisture I had to change my ESP8266-1 to -12 since -1 can not handle analog values (only Esp8266-07 & -12 can do this as far as I know.)
The info is then displayed the bigger "info-screen" in the dashboard.The pictures of the Plant will change depending on soil moisture.