Pi Zero W Camera Case
Description
This thing is a case for a Raspberry Pi Zero W with a 5 Megapixel spy camera that I use to monitor prints in my 3D printer. Before assembling the camera twist the lens counterclockwise with a set of small pliers while holding the base with another tool to break the dot of glue that holds it to focus at infinity. With the camera connected to the Pi Zero and folded on the back of the printed circuit board, put a dot of superglue on the four corners of the lens base and push the camera lens through the hole so that the base is flush with the case and the lens can be rotated from outside. Then secure the board to the case with four 3 mm self threading screws or regular M3x0.5 screws and push the lid onto the case. I have printed both case and lid with solid infill and no supports, although first please rotate the lid by 180 degrees from the position showed in the STL rendering. The slits in the lid provide for enough convection air cooling so that the Pi Zero W works around 55C inside the printer, although I have also attached a small adhesive heat sink to the CPU. The Pi Zero W runs headless with raspbian stretch lite and mjpg_streamer using the native broadcom camera driver and is able to stream 1280x720 30 fps no problem using around 40% CPU. After you have placed the camera in the printer with whatever mount you choose you can rotate the lens counterclockwise from the original position of focus to infinity to focus on the center of the printer bed, which in my case was a little over 50 degrees. The mjpg_streamer process starts at boot time with a user cron job so that after powering the Pi Zero the video stream is available connecting to the Pi Zero wirelessly soon after. Hope you like it!
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