dreamcat4/showmewebcam

Show-me webcam: An open source, trustable, and high quality webcam

This firmware transforms your Raspberry Pi 0 W to a high quality webcam for all your Zooming needs.

Raspberry Pi 0 W (I have not tested with the Pi 0 non-Wireless)
Pi 0 W Camera Ribbon (comes with the Pi 0 camera case or you can buy somewhere else, the stock one that comes with the camera may not fit).
Raspberry Pi Camera or Raspberry Pi High-Quality Camera
Micro SD card

The camera is known to work on Linux, Windows 10 and macOS Mojave.
You can use the normal camera of the Pi, it will work too, of course it won't look too good.

Assemble the camera to the Pi.
Download the binary release (down below).
Download and use Etcher to write the image to the SD card.
Use the USB data port (the one in the middle of the Pi, not the one on the edge) to connect to a computer.
Enjoy!

Occasionally I release binary snapshots at the release tab: https://github.com/showmewebcam/showmewebcam/releases

For debugging, a 115200 baud serial interface is provided as a ttyACM device:

Also, there is a untested serial interface on the serial 40-pin header: https://pinout.xyz/pinout/uart

If you want to modify the image content the quick-and-dirty way (not recommended):

Start with the chroot-to-pi script: https://gist.github.com/htruong/7df502fb60268eeee5bca21ef3e436eb
Edit /bin/bash to /bin/sh on the chroot /mnt/raspbian /bin/bash line.

Make a directory in your home: develop.

In develop, untar the buildroot-2020.2.3 tar package and rename buildroot-2020.02.3 to buildroot.
Get out back to develop.
In develop, git clone this repo https://github.com/showmewebcam/showmewebcam to it.
Run ./build-showmewebcam.sh.
The resulting image will be at the buildroot/output/image folder.