I have finished the guide on how to make the Pi Zero W datalogger, you can find it here. Let me know if you have any questions.
I will upload the custom image once I manage to shrink it down.
Thanks everyone for the amount of interest today. Don’t hesitate to ask me questions by mail! The Instructables page and SDcard images will be showing up here in the coming weeks.
Update: the Instructable can be found here
The red line is the dry cable temperature, the blue line is the wet cable temperature. The canopy starts at 20 m, and ends at 34 m. Shades against solar radiation are placed between 38 and 46 m.
If you want to have more control over the playback, look here.