TREEMO can detect soil moisture with sensor. You can display tree's emotion by this device.
With the ESP8266 (WIFI dev. kit) you can make your own IoT (internet of things) projects with TREEMO.
How to assembly: https://youtu.be/mORSGAQ57ZU
All 3D model, component and circuit wiring are 100% complete.
But source-code hasn't been completed yet. (in the video is a simple test)
Screws for assembly
Solder 2 modules together
Solder 5 of Female-jumper-wire (length = 1 inch) to display module
All plastic part