pedals

Tue Oct 29 20:55:56 UTC 2013

Thanks David for your precious support.

Like you, my main concern about MaKey MaKey is the timing.

For my experiment, I think I will ended up using the pedal from PST.
It is not cheap, but (hopefully) I won't have problems interfacing it with
E-prime through the SRBox.

My lab has ordered one today. According to PST, it should take just a few
days to be shipped.

I will keep you updated on how it works.

Thanks!

On Tue, Oct 29, 2013 at 2:04 PM, David McFarlane <mcfarla9 at msu.edu> wrote:

> Just to clarify that last point, even patching a foot pedal directly into
> the keyboard does not give you the best timing performance, because
> keyboards generally provide only mediocre performance (but see
> http://www.empirisoft.com/**directinkb.aspx<http://www.empirisoft.com/directinkb.aspx>).  If you want millisecond-quality performance, you need to incorporate
> something like an SRBox, or a high-speed I/O device (e.g., old-fashioned
> parallel port).
>
> -- David McFarlane
>
>
>
> At 10/29/2013 03:57 PM Tuesday, David McFarlane wrote:
>
>> John, Very cool!  For US$50 (plus US$5 s/h within USA, US$15 elsewhere)
>> the MaKey MaKey gizmo acts like a basic external digital input board
>> through USB, converting any switch closure into an ordinary key press,
>> mouse button press, or mouse movement useable by any software that
>> recognizes a USB keyboard or mouse.  I want one of these, could come in
>> handy!
>>
>> Francesco, As it turns out, one of our labs has recently purchased USB
>> foot pedals that act like key presses, and they use that with E-Prime.  See
>> http://www.tomtop.com/usb-**foot-control-keyboard-mouse-**
>> action-three-switch-pedal-hid-**c954.html<http://www.tomtop.com/usb-foot-control-keyboard-mouse-action-three-switch-pedal-hid-c954.html>.  Cost is US$34 (plus s/h I suppose).
>>
>> Both the MaKey MaKey and USB foot pedals should work fine if you do not
>> need absolute millisecond timing performance (note in particular that the
>> MaKey MaKey page says that they use a moving window averager to lowpass
>> switch noise in software, I imagine that might add a bit of delay; goodness
>> knows how the USB foot pedals behave).  Otherwise users should test input
>> timing characteristics for themselves (use an oscilloscope, or a Black Box
>> Toolkit).
>>
>> I would love to know what you end up with, please write back and let us
>> know.
>>
>> -----
>> David McFarlane
>> E-Prime training online:  http://psychology.msu.edu/**
>> Workshops_Courses/eprime.aspx<http://psychology.msu.edu/Workshops_Courses/eprime.aspx>
>> Twitter:  @EPrimeMaster (https://twitter.com/**EPrimeMaster<https://twitter.com/EPrimeMaster>)
>>
>> /----
>> Stock reminder:  1) I do not work for PST.  2) PST's trained staff take
>> any and all questions at https://support.pstnet.com , and they strive to
>> respond to all requests in 24-48 hours, so make full use of it.  3) In
>> addition, PST offers several instructional videos on their YouTube channel (
>> http://www.youtube.com/user/**PSTNET <http://www.youtube.com/user/PSTNET>).  4) If you do get an answer from PST staff, please extend the courtesy
>> of posting their reply back here for the sake of others.
>> \----
>>
>>
>> At 10/27/2013 03:16 AM Sunday, john at johnallen.it wrote:
>>
>>  Francesco
>>>
>>> David's answers are all great, as slways, however if u dont want to
>>> spend good money on a response box snd if you'e happy using USB rather than
>>> serial port input, then you might like to consider this <
>>> http://www.makeymakey.com/>ht**tp://www.makeymakey.com/<http://www.makeymakey.com/>
>>> On first appearance it may appear like a toy but I think you should be
>>> able to get it to work for your purpose.
>>>
>>> John
>>> On 25 Oct 2013 18:24, "David McFarlane" <<mailto:mcfarla9 at msu.edu>mcfa**
>>> rla9 at msu.edu <mcfarla9 at msu.edu>> wrote:
>>> Francesco,
>>>
>>> Been working on this repsonse for the past couple days...
>>>
>>> You will need to get a soldering iron and a multimeter, and have the
>>> skills to use them, or find & team up with a local electronics technician,
>>> as this is a bit of a do-it-yourself project.  The first time I did this in
>>> the 1990s, we had keyboards that still had individual mechanical switches
>>> for each key, I just opened the keyboard case and soldered a pair of wires
>>> (from two-conductor speaker cable) directly to the desired key switch.  I
>>> left about a foot (~0.5 m) hanging outside the keyboard and added an inline
>>> 3.5mm monophone jack to the end.  The foot pedal either came with a 3.5mm
>>> monophone plug, or I cut off whatever it came with and replaced it with a
>>> 3.5mm plug myself.
>>>
>>> Of course, you will not likely come across those keyboards anymore.  But
>>> no problem, it just means that you open up the keyboard again and patch
>>> directly into the keyboard matrix controller, which is what I did for a
>>> later project (and that time, I drilled a hole in the case and mounted a
>>> jack right on the keyboard case, very neat).  Back then I got some
>>> insructions from a web page, but I cannot find that right now so you might
>>> have to Google around yourself -- I found the following that introduce some
>>> of the principles, <http://www.howstuffworks.com/**keyboard.htm<http://www.howstuffworks.com/keyboard.htm>
>>> >http://www.**howstuffworks.com/keyboard.htm<http://www.howstuffworks.com/keyboard.htm>and
>>> <http://pcbheaven.com/**wikipages/How_Key_Matrices_**Works/<http://pcbheaven.com/wikipages/How_Key_Matrices_Works/>
>>> >http://pcbheaven.com/**wikipages/How_Key_Matrices_**Works/<http://pcbheaven.com/wikipages/How_Key_Matrices_Works/>-- if you cannot figure out how to do this based on these principles, then
>>> you should not try this project.
>>>
>>> Anyway, once you you have a switch wired into the keyboard, it
>>> effectively *is* a keypress, so no need for any drivers or Devices or ports
>>> or anything else.
>>>
>>>
>>> But really, you would be better off using a PST SRBox.  The SRBox has an
>>> expansion connector inside that allows you to easily add external devices
>>> that will then act just as if you pressed buttons on the SRBox.  In that
>>> case, you will only need to connect two wires from the pedal to a mating
>>> connector -- the SRBox should come with a manual that explains the
>>> priciples involved (I have the manual right here), or you can purchase
>>> PST's SRBox Custom Expansion Kit...  Well, I just looked this up now, and
>>> for a total of US$640, you can get the SRBox (US$450), the Custom Expansion
>>> Kit (US$150), *and* a foot pedal (US$40), so there you go!  Yes, that is a
>>> bit of money, but you will find the SRBox handy for many reasons, including
>>> better timing performance (see PST's measurements at <
>>> http://www.pstnet.com/**eprimedevice.cfm<http://www.pstnet.com/eprimedevice.cfm>
>>> >http://www.**pstnet.com/eprimedevice.cfm<http://www.pstnet.com/eprimedevice.cfm>).  But if you want to save $150, you can do without the Custom Expansion
>>> Kit and just get the interfacing components you need from an electronics
>>> supplier.
>>>
>>> I think that should cover it.
>>>
>>> -- David McFarlane
>>>
>>>
>>> At 10/22/2013 06:28 PM Tuesday, francesco biondi wrote:
>>> Thanks David for the quick reply!
>>>
>>> It seems to me that the Casio option in quite convenient.
>>>
>>> At that time we just patched them directly into the keyboard so that
>>> foot presses looked like a key press, e.g., {F12}.
>>>
>>>
>>> Can you please give me a more detailed explanation?
>>>
>>> Since it has a Jack plug, which port should i use? do i need to get an
>>> adapter?
>>> (apologizes, but I am not familiar with this topic at all)
>>>
>>> In eprime, which device should i select from AddDevice window?
>>>
>>> Thanks,
>>>
>>> and still apologizes whether my questions sound stupid.
>>>
>>> On Tuesday, October 22, 2013 4:08:59 PM UTC-6, McFarlane, David wrote:
>>> Francesco,
>>>
>>> Years ago we did an experiment using foot pedals, we just used simple
>>> on-off foot switch pedals from Radio Shack, they do not seem to carry
>>> them anymore but you can get a glimpse of what I mean at
>>> <<http://www.eham.net/reviews/**detail/4801<http://www.eham.net/reviews/detail/4801>
>>> >http://www.eham.**net/reviews/detail/4801<http://www.eham.net/reviews/detail/4801>
>>> >http:/**/www.eham.net/reviews/detail/**4801<http://www.eham.net/reviews/detail/4801>, or see the Casio model at
>>> <<http://www.bestbuy.com/site/**casio-sp3-keyboard-sustain-**
>>> pedal/6733588.p<http://www.bestbuy.com/site/casio-sp3-keyboard-sustain-pedal/6733588.p>
>>> >http://www.**bestbuy.com/site/casio-sp3-**keyboard-sustain-pedal/**
>>> 6733588.p<http://www.bestbuy.com/site/casio-sp3-keyboard-sustain-pedal/6733588.p>
>>> >http://www.bestbuy.**com/site/casio-sp3-keyboard-**
>>> sustain-pedal/6733588.p<http://www.bestbuy.com/site/casio-sp3-keyboard-sustain-pedal/6733588.p>.
>>>
>>> At that time we just patched them directly into the keyboard so that
>>> foot presses looked like a key press, e.g., {F12}.  Alternatively,
>>> you could just patch these into a PST SRBox and go from there.
>>>
>>> -----
>>> David McFarlane
>>> E-Prime training
>>> online: <<http://psychology.msu.edu/**Workshops_Courses/eprime.aspx<http://psychology.msu.edu/Workshops_Courses/eprime.aspx>
>>> >**http://psychology.msu.edu/**Workshops_Courses/eprime.aspx<http://psychology.msu.edu/Workshops_Courses/eprime.aspx>
>>> >**http://psychology.msu.edu/**Workshops_Courses/eprime.aspx<http://psychology.msu.edu/Workshops_Courses/eprime.aspx>
>>> Twitter:  @EPrimeMaster (<<https://twitter.com/**EPrimeMaster<https://twitter.com/EPrimeMaster>
>>> >https://twitter.**com/EPrimeMaster <https://twitter.com/EPrimeMaster>>
>>> https://**twitter.com/EPrimeMaster <https://twitter.com/EPrimeMaster> )
>>>
>>> /----
>>> Stock reminder:  1) I do not work for PST.  2) PST's trained staff
>>> take any and all questions at <<https://support.pstnet.com>h**
>>> ttps://support.pstnet.com <https://support.pstnet.com>>http**
>>> s://support.pstnet.com <https://support.pstnet.com> , and they
>>> strive to respond to all requests in 24-48 hours, so make full use of
>>> it.  3) In addition, PST offers several instructional videos on their
>>> YouTube channel (<<http://www.youtube.com/**user/PSTNET<http://www.youtube.com/user/PSTNET>
>>> >http://www.**youtube.com/user/PSTNET<http://www.youtube.com/user/PSTNET>
>>> >http:/**/www.youtube.com/user/PSTNET<http://www.youtube.com/user/PSTNET>).  4) If you do
>>> get an answer from PST staff, please extend the courtesy of posting
>>> their reply back here for the sake of others.
>>> \----
>>>
>>>
>>> At 10/22/2013 04:38 PM Tuesday, francesco biondi wrote:
>>> >I am about to run an experiment in which I collect foot responses.
>>> >I have V3 Interact pedals, Windows 7 and no drivers to install the
>>> pedals.
>>> >I could not find any drivers to get the V3 pedals working on my pc.
>>> >
>>> >I think I will be purchasing new pedals then.
>>> >
>>> >Do you know about / Have any of you already used pedals to run
>>> >experiments in eprime?
>>> >
>>> >If so, can you suggest me a particular brand?
>>> >
>>> >Thanks,
>>> >
>>> >Francesco
>>>
>>
> --
> You received this message because you are subscribed to a topic in the
> Google Groups "E-Prime" group.
> To unsubscribe from this topic, visit https://groups.google.com/d/**
> topic/e-prime/f7w5T680PZU/**unsubscribe<https://groups.google.com/d/topic/e-prime/f7w5T680PZU/unsubscribe>
> .
> To unsubscribe from this group and all its topics, send an email to
> e-prime+unsubscribe@**googlegroups.com<e-prime%2Bunsubscribe at googlegroups.com>
> .
> To post to this group, send email to e-prime at googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/**
> msgid/e-prime/527014bd.**8570320a.4d63.28bbSMTPIN_**
> ADDED_MISSING%40gmr-mx.google.**com<https://groups.google.com/d/msgid/e-prime/527014bd.8570320a.4d63.28bbSMTPIN_ADDED_MISSING%40gmr-mx.google.com>
> .
>
> For more options, visit https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>
> .
>

-- 
*- - - - - - - - - - - - - - - - - - - - - - - - - - *
*Francesco Biondi*
*PhD student in Cognitive Science*
http://colab.psy.unipd.it/people-detail.php?ID=3650

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To unsubscribe from this group and stop receiving emails from it, send an email to e-prime+unsubscribe at googlegroups.com.
To post to this group, send email to e-prime at googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/e-prime/CAFNoCas8%3DzEZpU%3D15nqNA9OdokWW2u9X3w5zKySiuFyx%3DC%3D8yg%40mail.gmail.com.
For more options, visit https://groups.google.com/groups/opt_out.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listserv.linguistlist.org/pipermail/eprime/attachments/20131029/776b3eca/attachment.htm>