Making my own webcam: Part 2
Well, all the parts arrived from the friendly pirates at Pimoroni today, so I got to work at putting it together.
The first speed bump was discovering that the Zero W has a mini-HDMI port. I have many HDMI cables as well as a micro-HDMI adaptor for the Raspberry Pi 4, but no mini-HDMI cables or adaptors. I decided to just connect to it over WiFi instead. First up, Adafruit's Raspberry Pi Zero Headless Quick Start guide. That got me to the point where I could
ssh into the Pi Zero W and update the operating system without seeing the screen or plugging in a keyboard or mouse.
The Raspberry Pi High Quality Camera Getting Started manual was also quite helpful in figuring out how to connect and adjust the lenses.
I tried a whole bunch of things, mainly on this forum thread, to try and get the Pi Zero to act as a webcam. It wasn't working, so I started wondering if the guy who showed a successful demo of it working on YouTube had a blog with instructions.
One last issue was that everything was out of focus. I had a look at the Pimoroni website again and found the manual for the lens that I bought. Turns out I had to remove the CS-S adaptor, fully screw in the backfocus, and only then adjust the aperture and focus.
I compared it against my built-in webcam, and it looks so much better! Going from a 720p fixed-focus webcam to a 12MP camera running at 1080p with a manual focus is quite the difference.
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