Having viewed a couple of camera mounts for the Rasberry Pi camera (V2.1), I decided to have a stab at designing my own. I wanted one that would fix to the print bed for a more stable timelapse image of prints.
The mount fixes to the bed bed via a u shaped bracket and threaded wingnut. I have it clamped to the plate that carries the heated print bed on an Ender 3 (having fitted an EZABL and removed the springs and adjusting nuts for a fixed position) but it can also be clamped directly to the bed. I have allowed enough gap in the clamp should you use a glass plate on your bed (as I do).
You may need to adjust the focus of the camera to allow for the short distance to the print area. I used this wrench to tweak the lens:- https://www.thingiverse.com/thing:1570865
The U Bracket is attached to the arm with a M4 (12mm long) bolt, nut and spring washer - see image no. 3.
- Resolution: 0.15mm
- Speed 50mm/s
- Material: PLA
- Nozzle Temp: 205° (210° on the first layer)
- Bed Temp: 60°
- Infill: 30%
- 5mm Brim on all parts except the arm.
I created an additional bracket (extrusion bracket) that fits onto the top aluminum extrusion of the Ender 3 so that the arm and camera assembly can be re-positioned to view the print bed from above.
I have added a recess in the arm for the nut. The bolt only needs to be 12mm long now.