Re: [Emc-users] OT: 'touch' screen

[Gregg E. <g_a...@ya...>]

HP made a CRT monitor that had IR emitters and sensors aimed vertically and horizontally. They had to be mounted pretty far forward to clear the curve of the tube and resolution was very low. Software using it was limited to having its active spots at the intersections of the emitter and sensor pairs lines of sight.
 
They were crazy expensive in the 1980's, should be crazy cheap to build your own now.

    On Saturday, December 1, 2018, 8:20:37 AM MST, Roland Jollivet <rol...@gm...> wrote:  
 
 I've been thinking about how to implement a touch screen of sorts on a 19"
monitor. The TFT displays are too expensive for their size.

Then I came across this;
https://www.youtube.com/watch?v=2aOYc_GKTHQ

Very interesting, and with more scanners and LED's it could be very usable!
Next is to explore how easy it is to drive them.