observer/subject input

[franklind123]

I am trying to build something where I can click a button and have someone observe an object moving at various speeds. Any ideas on how I could use a button on the computer control the stop and start of an object? Are there an VI's out there for this?

[LVbum42]

There are plenty of VIs that are designed to send and receive data and/or digital signals.  LabVIEW includes several example VIs on how to communicate with hardware.  You may want to look at this other forum thread that has examples and a description of the hardware set up.

How to find moving object/target displacement (how much X, how much Y) using a USB camera in an acquired set of images?:  http://forums.ni.com/t5/Machine-Vision/How-to-find-moving-object-target-displacement-how-much-X-how/...

Regards,

Isaac S