Send event marker through Labjack U3-LV to Biopac

[Michael]

print(Channel)
print(type(Channel))

As the function works when you hard code it with an integer 1, what is the chance that your variable is somehow made up of strings?

@katsuragiai

It does turn on the channel after “EventOnset”, but does not turn off the channel after “EventOffset”. There’s no error message. I could not tell from the code what’s wrong.

Your code is fighting against itself: if the time of EventOffset has passed, so has the time of EventOnset, so both signals will be sent on every screen refresh once the EventOffset time has elapsed.

You should probably maintain some flags like onset_signal_sent and offset_signal_sent that are initialised to False at the start of the trial, and then used to decide whether to send their respective signals (only i.e. send the signal if the time has elapsed and the value is False, and then set them to be True, so the sending happens only once).

Also:

Please surround python code with backticks

When you include python code on this forum please put triple “backticks” like this ``` on the line before and the line after your code. If you’ve done it correctly then your code will appear in a grey box with correct indentation like this (check the preview of your post on the right hand side before posting it) and other people will be better able to work out what might be right/wrong with your code. if myVal==True: break If you’ve already posted something that didn’t follow this rule th…