Anemometer

Not finished -
I will update the complete description later

Currently I use these bearings (low budget):
https://de.aliexpress.com/item/10pcs-lot-623ZZ-bearing-623-ZZ-3x10x4-Miniature-deep-groove-ball-bearing-623-2Z-ZZ-bearing/32725107555.html?spm=2114.13010608.0.0.WxNsOO

I just bought one ceramic for testing - now I got it and I recommend this bearing:
https://de.aliexpress.com/item/Free-shipping-623-2RS-623-hybrid-ceramic-deep-groove-ball-bearing-3x10x4mm/32642399616.html?spm=2114.130