This is an arm to mount a Raspberry Pi camera to an 8 mm (acrylic) print bed. I use it on my GeeTech i3 pro C, but it should fit lots of other models as well. Although it is a bit loose, and i had to fix it with sticky tape. (Yes, the tape’s a pun and says »Zusammenhalten«, that is, “stick together”.) This works great with OctoPrint (and OctoPi). It gives great time lapses with the printed object stable when you have a moving print bed. Combine this with the upper parts of Daniel Bull’s Raspberry Pi [camera mount](https://www.thingiverse.com/thing:239268). The mount is not included because of incompatible licenses. (Somehow the link does not work, but i am speaking of thing number 239268 “over there”.) I added the OpenSCAD file, so people can change the sizes, e.g. for thinner beds.