Quantity   Component name
1 × PCB & electronics 61.4€ -> https://hackaday.io/project/186829-ultratower/log/211608-final-pcb-cost-and-modularity
1 × PVC pipe ø100 mm, 1 m 4,5€
1 × PVC pipe ø40 mm, 1 m 3,5€
1 × Black Plastic box 14L 2€