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

[Gene H. <ghe...@sh...>]

On Saturday 01 December 2018 12:51:54 Roland Jollivet wrote:

> It's all probably not worth the schlep.
>
> Buying this would be a lot easier;
> https://www.amazon.com/Asustek-15-6in-Wled-1366x768-Vt168n/dp/B01B6JD7
>DA/ref=sr_1_fkmr0_1?ie=UTF8&qid=1543686577&sr=8-1-fkmr0&keywords=ASUS+V
>T168N
>
> On Sat, 1 Dec 2018 at 19:44, Gene Heskett <ghe...@sh...> wrote:
> > On Saturday 01 December 2018 10:17:29 Roland Jollivet 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..
> >
> > With the ccd bars from a fairly modern scanner, you would have both
> > in a unit but working with white light, not ir, and since both are
> > in the same bar, one could theoreticly multiplex them for even
> > better accuracy. But even the bars out of my brother mfc-j6920dw,
> > would only give you 11" of active area, and I'm sure the white light
> > would be a distraction in use, so one would have to make 2 bars of
> > ir emitters, which could be made longer increasing the size of the
> > working field at the expense of poor accuracy in the corners. 2 ccd
> > bars end to end would solve that, giving 22" or more of scanable
> > area vertically. How much $ would you have in getting those parts
> > from brother?
> >
Neither is that with only a 10 point touch.

The ones I've had, and still have one of on my coco3, are a tech I don't 
identify, but it has the same 9600 baud interface as an older crt model 
we used on the weather gfx terminal 15 years ago at the tv station. On a 
db9 connector. If I had more serial ports, I'd be tempted to see if I 
could adapt my "joystick" driver that runs with a serial mouse to it. 
But its ex P.O.S. from a grocery chain and might be 14" diagonally, a 
bit small for good control of LCNC. $64 from fleabay 3 or 4 years ago. I 
have a scan doubler between the coco3 and this monitor.

The old, must have been 75 lbs, 15" crt model has been recycled long ago.

> > --
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
> >
> >
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-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>