Description of the experiment: Our MRI experiment requires the use of the blue and yellow buttons of the cedrus button box (LS-PAIR) to have a slider component move up and down. This is done in order to continuously rate pain over the experiment.
Description of the problem: When polling for a response from the button box nothing is added to the response queue. As below:
print(len(buttonBox.response_queue)) <- - - this prints 0 (even when pressing the button box)
evt = buttonBox.get_next_response()
no; I never had issues with my Cedrus-box but given that it is mine everything is enabled. There were two bug fixes (2017, 2019) which “should” be installed depending on how you control the box. 2021 there was a fix to how a delay was measured.
I had never problems with firmware update on the Cedrus-box. But that doesn’t help you when you are not allowed to update. I see a lot of labs that do not update their soft- and hardware because everything is running. Well, at the same time they might be missing a lot of new features. Given that there are three boxes you might convince them to update one box.
Did you try the sample code provided by Cedrus? Their approach looks different than the one you used.
How do others address the Cedrus-box? Do they use PsychoPy as well or another software?