If I was making a homemade one again, I'd use a camera module for raspberry pi, like this:
https://shop.pimoroni.com/products/raspberry-pi-high-quality-camera?variant=31675712241747
That way you can attach various lenses into it, you can also plug it straight into a TV or a tablet with HDMI in. I have a TV already, I have a 8GB rapsberry pi 4b, I have camera lenses, so basically I would just need to buy that camera module, an adustable boom arm and make an enclosure for it. It would probably also be a lot higher quality than most of these cheap crappy microscopes you can buy. The homemade one I already made is great already and works fine for smd soldering, I could probably plug it into my raspberry pi and view it on my TV if I wanted. That's why it's good to make your own for your own needs. You end up with a higher quality device for a fraction of the price.
Here's a video of someone using a raspberry pi zero w with a cheap camera module doing some soldering:
https://www.instructables.com/Raspberry-Pi-Zero-HDMIWiFi-Soldering-Microscope/
Did you add the ”C or CS mounted lense”?
https://shop.pimoroni.com/products/raspberry-pi-hq-camera-lens?variant=31675768963155







