A long time ago, about last century I started working on the 6382 Fire Station. And got stuck on the shutters. That is, until recently. While telling Eline a bed time story about Lego firemen I wondered if I finally could this going. After boring countless people with here is a first pass. It still needs some more debugging and I am not convinced the bottom part should move like it does at the moment. I think it should move at the same constant speed as the top part.
Anyway, here it is: