Nozzle camera borescope holder for Prusa MINI+

You can adapt freecad model to your borescope camera if it does not fit. I use this 5.5mm diameter borescope camera:
https://www.aliexpress.com/item/32891028762.html

With 5.5mm diameter and top of borescope holder, bottom of camera is 7mm below extruder carriage, still 1mm above nozzle. Becing above nozzle is important to avoid collisions.

Cover photo shows fixation of borescope holder with superglue, 2nd photo shows 640x480 snapshot taken from OctoPrint. Borescope camera is used as part of “OctoPi and Pi camera holder” model:
https://www.printables.com/model/158586-octopi-and-pi-camera-holder

Here is one nozzle camera video as example (stairway to heaven, print into air, overhang):

This one shows fine details of 0.4mm thick single perimeter wall ball:

I uploaded many more nozzle camera videos to youtube recently:
https://www.youtube.com/channel/UCXhm6uSgILX3lrUuaWirZGg/videos

Related forum thread, discussing related tool mjpeg_fps as well, as how to capture mjpeg stream and convert to .mp4 with ffmpeg for uploading to youtube:
https://forum.prusa3d.com/forum/user-mods-octoprint-enclosures-nozzles/simple-nozzle-camera-borescope-holder-for-prusa-mini/