I couldn't find a raspberry pi holder / octoprint server that i liked, so i designed my own.

Project video here (It really helps my channel if you engage with the video, im also more responsive to comments / questions you youtube than I am on thingiverse):

additional materials needed (you probably have some of these already):

• webcam with 1/4" mount. (I used a Logitech C920): link

• 3A boost/buck converter to power the pi off of the prusa power supply: link MAKE SURE TO ADJUST THE VOLTAGE BEFORE CONNECTING YOUR PI!!!

• loc-line / flexible camera stuff (I bought mine a while back and is no longer listed. You might be able to find it cheaper. I initially went with just one of these, but bought a second and used 1/2 of the second one to add additional length. I currently am using 25 sections of tubing): link

• M3 bolts of various sizes, I have this kit: link

• small right angle USB cable for connecting the pi to the prusa control board: link

• rpi heatsink. Probably unneeded, but looks cool. I also used the bolts from this in the design, so you might have to drill out a hole or widen the nut insert if you want to use bolts from the above kit): link

• spade connectors to attach the boost/buck board to the prusa PSU: link

• headers for making power wire to go from the boost/buck board to the pi: link

• wire: needed, not gonna link.

• magnets (only needed if you also print the door brace) link

STEP files are included, but contain some parts that should be hidden, couldn't figure out how to export a single body in fusion 360.

useful octoprint settings and such:

Octoprint disconnects from wifi and doesn't reconnect:
```

edit /etc/wpa_supplicant/wpa_supplicant.conf and add the following before the network={} block:

ap_scan=1
autoscan=periodic:10
disable_scan_offload=1
```

Get camera working in octoprint
```

edit /boot/octopi.txt

set camera="usb"
set camera_usb_options="-r 1920x1080 -f 15"

```

Disable camera auto focus / white balance / brightness stuff (needed for clean looking timelapses - go to http(s):///webcam/?action=stream to get a full screen webcam view while changing settings
```

install needed utility

sudo apt install v4l-utils

list settings / current values

v4l2-ctl --list-ctrls-menus

values that work well for me:

exposure ( note, exposure_auto=1 is manual, 3 is auto. this is confusing!)

v4l2-ctl -c exposure_auto=1
v4l2-ctl -c exposure_auto_priority=0
v4l2-ctl -c exposure_absolute=600
v4l2-ctl -c gain=255

focus - will take some messing with

v4l2-ctl -c focus_auto=0
v4l2-ctl -c zoom_absolute=0
v4l2-ctl -c focus_absolute=65

didn't notice a difference with this setting personally

v4l2-ctl -c backlight_compensation=0

color / image settings (don't worry if your camera goes green when you set auto=0, 3000 is a good start, higher is warmer, lower is cooler)

v4l2-ctl -c white_balance_temperature_auto=0
v4l2-ctl -c white_balance_temperature=3050
v4l2-ctl -c sharpness=140
v4l2-ctl -c brightness=120
v4l2-ctl -c contrast=120
v4l2-ctl -c saturation=110
```