Thanks, it was a lot of work :x
Learning Arduino was one of the fun parts for sure! I do have a temperature and humidity sensor on each level, they are meant to become different 'biotopes', a hot arid one and a humid warm-but-milder one. HID heats the former (upper) level and I have a heating cable in the other one, set to react to the sensor.
However I want to improve on that by blowing air through wet perlite and rigging the heating cable like a web to blow that humid air through...
Another Arduino is meant to cooperate with the current one so that I have enough pins to support my TFT screen to show the temperature and status etc... however it won't upload anything whatsoever and I don't know what's going on with it. It has to be a special one operating at 3.3V.
Damn now that I think of it, maybe I will have to do acrobatics to have it communicate with my normal 5V one. (logic level conversion)
Hopefully I can just find another TFT screen that is 5V (the screens are relatively cheap in this entire plan :D) and be done with this.
Anyway, logging data is doable -easy really. What to do with the data is more work.
Figuring out the programming is accessible and fun, at some point it can get time-consuming but I don't think it gets tedious - go for it! Maybe you already know exactly how to do all this and just haven't done that particular weather station project...
