Joystick direction as response & RT

[Nick]

Hi David,

Thanks for the interesting suggestion.  I think we're kinda locked
into trying to figure something out with the existing joysticks we
have before buying other equipment though. Also, I am not so sure that
I could pull off the the custom cable and connections in the near
future having never done anything like that before.  The frustrating
thing is that my colleague and I have our procedure ready to go except
for this data recording issue. Would you have any suggestion of in-
line script that might be able to accomplish the recording of first
direction & RT by any chance?

On Feb 1, 3:21 pm, David McFarlane <mcfar... at msu.edu> wrote:
> This old geezer cannot quite resist chiming in with some useless
> thoughts.  If I only wanted to detect when a subject pushed a
> joystick forward or backward (and not how far or fast), then I would
> go to eBay and purchase a simple old four- or eight-position Atari or
> Commodore style joystick, or even better, an arcade game joystick
> that used good quality micro switches.  These gave simple off-on
> switch closures when the user pushed the stick to a side or
> corner.  Then I would build a custom cable to go from the appropriate
> switches directly to an old parallel printer port or an added digital
> I/O card.  Then in E-Prime I would use the Port device, or the
> ReadPort function from script.
>
> Ah for the days when the electronics were laid bare and the operating
> system got out of our way...
>
> -- David McFarlane, Professional Faultfinder
>
>
>
> >I can certainly forgive it, but unfortunately that's not the problem.
> >I can get E-Prime to recognize the joystick and record certain
> >responses (e.g. button click and concomitant RT), but I can't get it
> >to record the direction of first movement and the RT of that response.
>
> >On Feb 1, 11:00 am, liwenna <liwe... at gmail.com> wrote:
> > > I hope you can forgive me if this is is a really silly question but:
> > > did you add a 'joystick' to the devices in the experiment properties?
> > > (e-prime logo at the top of your experiment tree).
>
> > > On Feb 1, 5:15 pm, Nick <ndla... at gmail.com> wrote:
>
> > > > Hi everybody,
>
> > > > I am trying to interface a Logitech Attack3 joystick with E-Prime. So
> > > > far I have only had limited success although I think it should be
> > > > pretty simple to do what I need.
>
> > > > On each trial, the participants will have to respond to the final
> > > > slide with a forward or backward movement of the joystick (depending
> > > > on the trial type). All I need is 1) for E-Prime to record the
> > > > Reaction Time of when the the push or pull of the joystick is
> > > > initiated (in correspondence to the onset of the final slide for each
> > > > trial) and 2) for the direction (up or down) of the first joystick
> > > > movement to be recorded to the data file.
>
> > > > It seems like this should be pretty standard, but I can't find any
> > > > code that addresses it. Is there some code you might know of to do
> > > > this type of thing?
>
> > > > Also, I did read through previous posts attempting to solve this
> > > > problem with continuous sampling of the joystick X-Y coordinates, but
> > > > I couldn't get the posted code to work out.  Although I don't like
> > > > this solution quite as much for my purposes, any help with how to
> > > > continuously sample the X-Y coordinates would also be very
> > > > appreciated.
>
> > > > Thanks!
> > > > Nick

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