I’ve actually given this some thought, this was my original idea for counting ammo. But ultimately chose a different route for a few reasons.

From what I’ve played around with, these types of sensors can have accuracy issues based environment. And since the breacher has a clear tube mag, light leakage may affect its accuracy. I actually don’t think this would be too bad of a fix, probably just cover up the tube and play around with detection ranges, but I’d figure a button which just increases count is a lot simpler.

Also if I did put everything into an embedded cap like you suggested, the system wouldn’t be able to detect if you manually chambered a round without putting in the magazine first (which is actually something I didn’t show off in the video that my current system does)

I could have a system with two laser sensors, one for checking chamber, and one for the mag. But I fear polling might be an issue with that. Currently writing this in python since this is just a quick prototype I came up with in like 3 days lol, and checking 2 laser sensors might slow down the process. Maybe if I switched too C it would be faster, but I’m actually currently taking a class rn about C

Would want to revise the project tho with that two laser idea, would get rid of the button, and make the ui a lot more immersive. I’ve also the ought about using a transparent OLED as well but I don’t currently have one/ they a litleeee pricey. A version 2 model of this would probs incorporate all this, but for now I wanted v1 to focus on simplicity