I am in the process of setting up Raspberry Pi 4B and a Pi camera on both of my printers (stock MK3S+, and a Bear upgraded 3S+ scratch build) to run Octoprint and monitor my printers remotely. I found this Pi case that mounts directly to the MK3 frame, and which can be adapted to the Bear frame by adding a pair of drop-in T nuts. It has a plain rectangular port for the ribbon cable used to connect the Pi camera:
https://www.printables.com/model/217153-pi-case-v2
Then I discovered this print in place drag chain designed specifically for the camera ribbon cable:
https://3dmixers.com/m/25683-raspberry-pi-rapicam-camera-ribbon-cable-drag-chain-v2
I needed a way to connect the two. I briefly considered trimming the ears off the top link, and just gluing it in place, but a better solution was to design a link to connect the two, which snaps together, and maybe more importantly for maintenance, it can also be disassembled easily.
I printed it with the tabs that lock it into the case pointing up. I don't like using supports if I can help it but I found it to be helpful with this part. I am including my sliced gcode file so that you can see where I painted on the support, but you should of course slice your own. But hey, if you want to use the file I sliced for my modified, scratch built printer with non-Prusa extruder and modified firmware, I guess go ahead if you are feeling lucky.
The next part of the project will be to design a link for the other end of the drag chain, to connect to the articulating arm assembly on the x-end. Will post that also once it is designed and tested.
The author marked this model as their own original creation.