[snide]

One place where "TVs" still remain fairly expensive is in large format touch screens. Outside of using IR frames, getting a large (40 inch) touch capacitive display still requires quite a lot of legwork. I've been trying to find them for my DnD map system Table Slayer [0] and I had to contact factories in China directly. It's still many hundreds of dollars per device even for raw hardware.

[0]: https://tableslayer.com

[bhouston]

I suspect the main issue is economies of scale. There is little demand thus there are no multibillion dollar plants optimized for delivering them at scale. (The same reason why 8K TVs are not yet cheap.)

[snide]

There are so many kiosks out there though. It's more that I think because it's a commercial audience, the pricing hasn't reached down too much.

All that said, it's still odd there's not at least one boutique option for hobbyists.

[_DeadFred_]

There used to be tons. Heck there were even options we used to use where you could overlay over your CRT. That market has leveled out to what the market wants at this point.

[robocat]

Software that uses a camera to detect pointing?

If you're right handed then I assume a USB camera from the back-right can either detect a big colored sylus, or your hand pointing. A hacked wireless mouse/device for buttons?

[ge96]

What about those beam breaker strips you could put on x/y axis, maybe multi-touch/item placement would be problematic.

[snide]

Yep. That's what IR frames do, and that's exactly the problem. What I've built actually works really well, it's just hard to justify that pricing.

[pjc50]

Long ago I did semiconductor work for https://www.flatfrog.com/flatfrog-board , which uses the beam principle combined with in-surface refraction, and I see they're still pretty expensive. You do get an awful lot of little DSPs around the edge for that price, though.

[ge96]

I wonder if you had a big table maybe you could use a camera looking upwards and see the dark spots covering the board that's semi-transparent.