
The surface is a stack of: plywood panel supports, TV, plexiglass, screen protector, IR touch frame and plywood frame.
Parts list
- Hisense 55" TV - $200 at Best Buy
- 43" IR touch screen - $164 at Walmart
- 50" anti glare screen protector - around $80 at Amazon
- ~43" sheet of ~1/8" plexiglass - I got this off the sidewalk. Plexiglass is definitely available but kind of annoying to get big pieces shipped so it was a great find.
- Mini PC - $330 at Amazon. I had this from an earlier project. Any sort of PC or laptop could work.
Bezels and insetting
The touch frame is inset inside of the TV. This allowed me to get a flush surface, where when I used a 43" TV the touch frame had to sit on the bezels, some of which stood out more than others, making things uneven. Insetting has worked well for me but it does make it a more complicated process. The easiest setup would be a 43" TV with wide, flush bezels but I haven't tracked that down yet.
Touch frame thoughts
I got the touch frame first and it's big enough I can't yet justify upgrading to a bigger one, but if I was starting fresh I might try something even bigger. Similarly IR touch is much cheaper than capacitive and works well, but it does detect touches a bit above the surface, which is mostly an issue for me when writing on it, because I think I don't pick up my finger as much between letters. If I stick with my overall setup I think I'll try a capacitive touch overlay sometime.





