I remember those. But the guy on the Youtube video had access to free IR receivers from a salvaged scanner and these where spaced 1,200 sensors per inch.
Also and I think this was a very good idea that HP did not think of, THis new machine does an NxM search at every frame so there are NxM possible intersection points. HP never thought of cheking the non rectilinear lines and they never thought of checking for multiple fingers on the screen at the same time. But as others have pointed out you can buy a higher quality touch screen monitor now for $160 or $260 for a really nice one with 1080p resolution. On Sat, Dec 1, 2018 at 1:26 PM Gregg Eshelman via Emc-users < [email protected]> wrote: > 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 < > [email protected]> 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. > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
