See pic below, it includes 13 single board computers (SBCs):
- 7 Raspberry Pis (4x Pi2 + 3x Pi3)
- 5 Odroids (4x XU4 + 1x C2)
- 1x LattePanda 4G/64GB
You can find further info (e.g. used OS for each device) in his German posting here.
Tholo will keep us updated about his next steps.
- it will be added artistic images with ultra-violet colors and more
You can ask him questions in above link or post below and I will forward it...
Find more hardware pics at: