I updated the length of the part that clips on the Ender because it kept falling off mine.
i wanted a PI camera mount that I could see under the nozzle while printing. I found this, but it was too short for my ender 3. So I lengthened the arm to fit my Ender 3, changed the mount to two posts along with remixed this camera holder (https://www.thingiverse.com/thing:2987719) by moving the mount to the bottom. This give a great under nozzle print view. Please rotate the object for minimal support.