This is a rigid arm that slots into the existing bed extrusion. The camera (once removed from its original case) screws into the top of the arm and can be positioned for a good view of the bed.
Originally used the flexi arm (https://www.printables.com/model/31697-logitech-c270-mount) but found it very easy to accidentally bump while removing the print sheet - so designed a rigid arm with the same attachment mechanism on the end of it.
Prints best in PETG with no supports. Print in orientation shown in slicer screenshot.
The author remixed this model.