Touchscreen Recommedations?

I am developing a software system on QNX4 and Photon that requires only a
touchscreen for input. We are looking at different makes and models and I
was wondering if anyone had any recommendations. I am not experienced at
writing drivers so the easier the better. Our requirements are 800x600
resolution and and LCD display.

Thanks in advance

Ross

In qdn.public.qnx4.devtools Ross Brantner <brantner@innernet.net> wrote:

I am developing a software system on QNX4 and Photon that requires only a
touchscreen for input. We are looking at different makes and models and I
was wondering if anyone had any recommendations. I am not experienced at
writing drivers so the easier the better. Our requirements are 800x600
resolution and and LCD display.

We support serial controllers by Elographics, Microtouch, Carrol, Dyna,
and AHL, with the Input driver.

(/home/ctravis/)$use Input | grep -ie touch
carrol Carroll Touch smartframe protocol
ahl AHL-51A touch screen protocol
intellitch Elographics Intellitouch or Accutouch protocols
a untouch (left button) event to occur (default 80)
-u Disable untouch (left button) event generation
microtch Microtouch protocol
-I 40XX (IntelliTouch board)
hbc Carroll Touch Hardware Based Controller
abs Transform and compresses absolute coordinate “touch” events
-b Touching the screen is a right mouse button (default left)

Chris

Thanks in advance

Ross

Hello Ross,

look @ HP:

www.noax.com … this was a Product for you.

Thanks

Ross Brantner wrote:

I am developing a software system on QNX4 and Photon that requires only a
touchscreen for input. We are looking at different makes and models and I
was wondering if anyone had any recommendations. I am not experienced at
writing drivers so the easier the better. Our requirements are 800x600
resolution and and LCD display.

Thanks in advance

Ross

We are using an Elographics resistive screen, using the Smartset protocol,
on a Sharp LCD display, at 800x600. The display looks great, and the
controller works pretty well with Photon 1.13, under QNX4.24. We have found
that the touch membrane wears out prematurely; however, we are using it for
an extrememely touch-intensive application (toll collection). The
manufacturer has an improved version which we have in beta test, and it
appears to be more durable. We also had a “run” of units where the touch
membrane had dead spots, right out of the box, which this beta version is
supposed to fix as well. One final problem was that the membrane often
delaminated from the glass; this did not appear to directly affect
performance, but whether it was associated with the other problems is hard
to say.

Elo now has Surface Acoustice Wave touchscreens available; these do not have
any membrane, and so should solve the durability problems. They also use the
Smartset protocol, and so should work with Photon. We are waiting for a
prototype for our system to test.

Ross Brantner <brantner@innernet.net> wrote in message
news:8svtk6$h2g$1@inn.qnx.com

I am developing a software system on QNX4 and Photon that requires only a
touchscreen for input. We are looking at different makes and models and I
was wondering if anyone had any recommendations. I am not experienced at
writing drivers so the easier the better. Our requirements are 800x600
resolution and and LCD display.

Thanks in advance

Ross

Hi

We are getting good results using the native QNX touchscreen drivers.
One point to watch out for is that in the version we are using the calibrate
program writes the offset file with the axes reversed so we have to edit it
afterwards to get things to work.

Steve

In qdn.public.qnx4.devtools Stephen F Terrell <stephen@trsystem.demon.co.uk> wrote:

Hi

We are getting good results using the native QNX touchscreen drivers.
One point to watch out for is that in the version we are using the calibrate
program writes the offset file with the axes reversed so we have to edit it
afterwards to get things to work.

Can you contact heather@qnx.com about this. You may be using a mismatched
input driver and calibration utility.