As kdoelling1919 notes in this github issue, sending multiple serial port triggers in the same routine fails on all but the first trigger. I am confirming this is also the case for the parallel port (I’m using Parallel port PCIe card). In that issue, TEParsons notes that the new Device Manager shou…

Hello @stanley101 yes I did see your post originally – it helped me get the parallel port communication working. Thank you! For posterity, not long after posting my previous message, I realized I could not actually reproduce the issue with parallel ports – so, false alarm there. However the serial…

How to add parallel or serial port to Device Manager

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stanley1O1 January 28, 2026, 1:07am 2

Dear Mikeopy,

Have you tried this, I spent a LONG time figuring out the issues with parallel ports and psychopy. In windows 10 and earlier, the same steps need to be taken.

I am currently running parallel ports triggers in a routine, multiple times with no issues using psychopy 2024.2.4 and 2025.2.3.

Issac

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How to add parallel or serial port to Device Manager

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