External trigger interfere the EEG signal with optoisolation
I used optoisolation and series resistors to divide the voltage.I connected as per the picture. Whether reading the signal from pin D11 in analog mode or reading the signal from pin D17 in digital mode, the trigger signal will interfere with the EEG signal.
I was wondering if anyone in the forum has encountered a similar issue or has any experience they could share. I greatly appreciate any help or suggestions that anyone can provide. Your expertise and insights are immensely valuable to me. Thank you all!
Comments
Hi Leeroy,
Your diagram does not appear to be the same as on this page,
https://docs.openbci.com/Cyton/CytonExternal/#optoisolation
Have you tried wiring the external trigger as suggested? Here is the datasheet:
https://www.vishay.com/docs/83606/cny17.pdf
William