touch screen

[khan2]

How to use touch screens with lab view ?

[becktho]

Hi

I think you definitely have to ask a question more precisely, otherwise you won't get helpful answers.

Now I would just answer "the same way as a normal screen - look at it and see what happens".

Thomas

[tst]

If your touch screen has windows XP or a supported version of Linux, then you just need to make your buttons large enough and not have a need to use the keyboard.

If it uses windows CE, you need the LabVIEW PDA module.

If it's something else, then you're out of luck.

[Conseils]

Selecting a completely random example from the web, yielded the following instruction manual: -

http://www.cdynamics.com/support/manuals/atouch/Atouch15.pdf

If you check this out you will discover that the unit uses an RS232 interface to obtain the position of the touch. Commands are sent and recieved in various combinations to determine where a touch was on the screen.

Good luck, let us know how you get on.

[AnalogKid2DigitalMan]

Use of a touchscreen for  LabView applications within Windows is fairly 'transparent'. They interface to the PC with a serial or USB connection. You then load the driver and perform some calibration routines. From there your finger acts as a mouse- you can drag/drop, click and double click by tapping your finger, etc. Your standard PC mouse will still be active. Movements are not as precise as what is obtained using the mouse. There are different touchscreen technologies that each have pros/cons.

For a LabView application, as tst stated, make your buttons large and also give sufficient separation between them.