Hi @jtseng
Yes, I am using the same parallel port for sending triggers and receiving inputs. I will brief this as you mentioned. I am starting to think that there is a problem in interfacing. The parallel port of the PsychoPy system is connected ONLY to the stimulus output interface box (in the image, box in the right) of the trigger interface unit (please see image below) through a DB25 male to DB25 female cable.
On the trigger interface unit, 14 and 15 light up (in the image, box in the left) when we press the right and left response pads. There is no BNC cable attached to 14 and 15 of the input triggers from the response pads. I think there is something wrong in the way its interfaced. STIM 2 software uses StimTracker (Cedrus) to send the triggers. However, STIM 2 is not getting any input from the response pads either (Only the MEG acquisition system gets it). Do you think I should connect the 25 pin parallel port to the DB37 port (left box in the image)?
The read/send bit of the control register is low, i.e., 0
ctrl_port.setPin(7,1) # sets it high, i.e., 1
I am wondering, if it is always the pin 7 though.
Thank you!
Nithin