pedals

Sun Oct 27 07:16:09 UTC 2013

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/
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" <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>and
> 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>).  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>, 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>.
>>
>> 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>
>> Twitter:  @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>ht**
>> tps://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>).  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
>>
>
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