[plug] Touch Screens

[Garth Atkinson]

Thank you for this. I will let you know how it turns out!

Garth

Denis Brown wrote:
> 
> Hello, Garth.
> 
> This is an off-list reply because I have had some experience with IBM touch
> screens but not in combination with Linux.  I wrote an assembly-language
> driver to interface with some psychological test programmes a loooong time
> ago and am not even sure if I still have the source code!
> 
> The IBM screen came with a "glass mouse" programme and required resident
> code which at boot time, uploaded microcode to the monitor/touch
> electronics.  Very complex in the usual IBM way but also very slick.  This
> breed could give you a Z axis to something like 256 levels of force!  They
> used four strain gauges, one at each corner of the screen.  Of course it
> also needed a calibration programme.  The model is now obsolete and has
> been replaced with something akin to the Carroll Touch and other capacitive
> technology screens.
> 
> If you get lucky, there might be a touch screen how-to?  If you think I can
> be of assistance please let me know.
> 
> Cheers,
> Denis