[sdiy] 8 wire touchscreen

[Paul Maddox (QinetiQ)]

Dear all,

 for one of my Projects (Tempest,
http://www.modulus.wavesynth.com/projects/projects.htm )
I'm useing a touch screen.
The one I salvaged has 8 wires (not the usual 4).. does anyone have any
links showing what the hell to do with the extra 4 wires :-)

Initially I thought they would be ground screening or something, but they're
not..
Ive speant about 2 hours trying to figure out the wiring (with my DVM and
touching the screen) only to get more and more confused as time goes by.
Ive got my screen driver going (I must get a digicam to take some pictures)
on an FPGA driving one of these (EL640.400-CB1)
http://www.planar.com/products/el.asp so now to get the touch screen working
in front of it....

Many thanks
Paul Maddox