Yes we are sending triggers to a parallel port via a USB port. I thought we were using a biosemi cable like this. But apparently this is a custom cable we made a few years ago that operates similarly. That is why I thought I could replicate the design in this post.
I did initially try using parallel port i/o. I tried it with port address 0x0378 and 0x03BC. Start data was set to 1 and stop data was set to 0. I received the following error:
Error message of : psychopy.parallel has been imported but no parallel port driver found. Install either inpout32, inpoutx64, or dlportio
I also get this error message when I tried to send a trigger via the setData() function like this post.
This error message makes it sound like a just need to update the driver like this. But this is a solution for a parallel port not a usb to parallel port, so it probably won’t work and I’m afraid it’ll break my computer. I think we’ll order the official biosemi cable and try again.
If you have any suggestions I’d be happy to hear your opinion.