touch screen monitor

[dphan128]

Has anyone used touch screen monitor for LabVIEW application. If you have used them before, please let me know which brand and model works for you. And what else do I need to buy beside the monitor?

Thanks for your help

dphan128

[AnalogKid2DigitalMan]

I have used Elo Touchsystems monitors in the past (5 years ago). The one I used connected to the serial port (nowadays, probably USB too) and comes with a driver you install and then go through a calibarion process. It is pretty transparent to LabVIEW and all Windows applications, it just acts as another pointing device and you can still use the mouse too. Nothing else to buy, just make sure you have the proper port available.

GUI design should take into account buttons that are larger than normal and with enough space between controls to allow finger placement.

[Enrique]

You may want to look at this:

Create an HMI with NI LabVIEW and Touch Panel Devices
http://www.ni.com/labview/hmi

Regards;
Enrique

[pallen]

We use touchscreens on just about all of our applications lately it seems. 

So far we've only used whatever Dell's flavor of the month was.  Aside from the occasional unit that arrives DOA, we've had good luck with them. 

[RavensFan]

I've been using Planar brand model # PT191MU.  It was about $1100.  So far I've been happy with it.

One key thing with it is making sure on screen buttons are enlarged to make them easy to click with your finger.

[Stephen82]

When use Elo Touchsystems monitors how LabView proccess buttons and other object on the screen?Because LabView did not support OPC drivers for ELO Touchsystems monitors?My question is about Labview proccessing of touch screen object?  

[AnalogKid2DigitalMan]

The ELO had a driver that came with it to allow it to act as a mouse, it was all transparent on the LabVIEW end of things.

[MIG]

I've also used ELO touchscreens in the past. The only issue I had with LabVIEW was getting a double-click to be detected properly.

Normally when you double-click with a mouse, you hold the mouse still, and click twice on the same spot. Using a finger on a touchscreen, it's hard to click twice on exactly the same pixel.

The ELO came with a setup utility where you could set the target size (eg 50x50 pixels) that would be used for detecting a double-click.This worked fine for every other Windows application except for LabVIEW.

I was using an event structure to try to detect a double-click on a listbox, and couldn't get it to work reliably, no matter what target size I set in the ELO setup utility.  I ended up programming my own double-click detector by using the event structure to detect two single clicks, and then deciding if they were close enough together in time and space to be considered a double-click.This worked fine.

Cheers,

Mark.

[AnalogKid2DigitalMan]

I should probably add that my touchscreen application was dated before Event structures, involved no double-clicks, and the controls on the GUI were oversized to ergonomically assit the operators. The ELO also had the calibration utility to map screen location and touch sensitivity.

-AK2DM

[Stephen82]

What you mean about transparent?When connect Elo touch screen to your computer, LabView how process and how connect to screen to detect user action?Do you work with TCP/IP,UDP connection or OPC Server. Please give me some help.