pedals
142 views
Skip to first unread message
francesco biondi
Oct 22, 2013, 4:38:02 PM10/22/13
to e-p...@googlegroups.com
Hi All,
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
David McFarlane
Oct 22, 2013, 6:08:59 PM10/22/13
to e-p...@googlegroups.com
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 , or see the Casio model at
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
Twitter: @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 ). 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.
\----
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 , or see the Casio model at
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
Twitter: @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 ). 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.
\----
francesco biondi
Oct 22, 2013, 6:28:50 PM10/22/13
to e-p...@googlegroups.com
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.
David McFarlane
Oct 25, 2013, 1:24:10 PM10/25/13
to e-p...@googlegroups.com
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 and
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 ). 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.
>
>.
>
>Twitter: @EPrimeMaster
>(<https://twitter.com/EPrimeMaster>https://twitter.com/EPrimeMaster )
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 and
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 ). 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
>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
>, 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
>.
>
>At that time we just patched them directly into the keyboard so that
>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.
>
>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
>David McFarlane
>E-Prime training
>online:
>
>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>https://support.pstnet.com , and they
>/----
>Stock reminder: 1) I do not work for PST. 2) PST's trained staff
>take any and all questions at
>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
>it. 3) In addition, PST offers several instructional videos on their
>YouTube channel
jacant...@gmail.com
Oct 27, 2013, 3:16:09 AM10/27/13
to e-p...@googlegroups.com
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
--
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@googlegroups.com.
To post to this group, send email to e-p...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/e-prime/526aa93d.8570320a.7ddc.3164SMTPIN_ADDED_MISSING%40gmr-mx.google.com.
For more options, visit https://groups.google.com/groups/opt_out.
David McFarlane
Oct 29, 2013, 3:57:30 PM10/29/13
to e-p...@googlegroups.com
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
. 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
Twitter: @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
>and
><http://pcbheaven.com/wikipages/How_Key_Matrices_Works/>http://pcbheaven.com/wikipages/How_Key_Matrices_Works/
>
>Twitter: @EPrimeMaster
>(<<https://twitter.com/EPrimeMaster>https://twitter.com/EPrimeMaster>https://twitter.com/EPrimeMaster
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
. 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
/----
Stock reminder: 1) I do not work for PST. 2) PST's trained staff
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 ). 4) If you do
it. 3) In addition, PST offers several instructional videos on their
get an answer from PST staff, please extend the courtesy of posting
their reply back here for the sake of others.
\----
their reply back here for the sake of others.
\----
At 10/27/2013 03:16 AM Sunday, jo...@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/>http://www.makeymakey.com/
>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
>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"
>be able to get it to work for your purpose.
>
>John
>On 25 Oct 2013 18:24, "David McFarlane"
><<mailto:mcfa...@msu.edu>mcfa...@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
>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,
>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
>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
>). 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
>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
>, 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
>.
>
>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
>
>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:
>
>Twitter: @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>https://support.pstnet.com>https://support.pstnet.com
>
>/----
>Stock reminder: 1) I do not work for PST. 2) PST's trained staff
>take any and all questions at
>, 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
>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
David McFarlane
Oct 29, 2013, 4:04:06 PM10/29/13
to e-p...@googlegroups.com
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 ). 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
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 ). 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
francesc...@ymail.com
Oct 29, 2013, 4:55:56 PM10/29/13
to e-p...@googlegroups.com
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 <mcfa...@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 ). 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 . 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
Twitter: @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 ). 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, jo...@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/>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
--
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.
To unsubscribe from this group and all its topics, send an email to e-prime+unsubscribe@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.
- - - - - - - - - - - - - - - - - - - - - - - - - -
Francesco Biondi
PhD student in Cognitive Science
Reply all
Reply to author
Forward
0 new messages