generate TTL signal on Macbook pro 10.8

1

Dear all,

I'm searching for a way to connect the parallel port to the Macbook pro with 10.8 OS/X, and send TTL triggers to the EEG system.

I checked the forum regarding this topic, and seems to me that the cheapest and easy way is to use UBW32 setup.

Pardon my ignorance, however, I was not sure how the UBW32 works. How would you connect the parallel connector to the UBW32? Or is this possible at all? Would this work well on a Mac as well? Also, what additional code will I have to write in my main experiment script so that it sends the TTL signals accurately and reliably to the EEG system?

Thank you.

Best regards,
Hweeling

2
Hi Hweeling,

It looks like the UBW32 board could do the trick, provided you're savvy enough to solder a parallel connector to it; that being said, if it is not properly done, it might impact on robustness and accuracy of the system.

A few weeks ago, someone was asking if using a USB-1208FS-Plus multifunction DAQ device to send TTL from a macbook would work, and we had concluded that it would. It looks like it might be less work using the USB-1208FS-Plus, even though might be a tad more expensive. I reproduce the thread of info below.

Hope that helps.


For completeness:

http://psychtoolbox.org/wikka.php?wakka=FaqTTLTrigger

links to
http://psychtoolbox.org/FaqTTLTriggerOSXLinux

which links to
http://docs.psychtoolbox.org/Daq

that says "The USB-1208FS is the size of a wallet and is powered
through its USB cable. We have complete control of it from within Matlab or, Octave via the PsychHID extension."

.. so, yes, it works.

Etienne



On 8 Apr 2013, at 09:52, Hwee Ling Lee <hweeling.lee@...> wrote:

Dear all,

I'm searching for a way to connect the parallel port to the Macbook pro with 10.8 OS/X, and send TTL triggers to the EEG system.

I checked the forum regarding this topic, and seems to me that the cheapest and easy way is to use UBW32 setup.

Pardon my ignorance, however, I was not sure how the UBW32 works. How would you connect the parallel connector to the UBW32? Or is this possible at all? Would this work well on a Mac as well? Also, what additional code will I have to write in my main experiment script so that it sends the TTL signals accurately and reliably to the EEG system?

Thank you.

Best regards,
Hweeling