Get Heavy Noise with A0~A5 pin

BongwooBakBongwooBak
in Cyton
Hi I'm Bongwoo Bak.

I have some problem with my OpenBCI 8-bit board.

I adjust the C++ and INO source code in order to get raw signal with A0~A5 pins.

But in the act of streaming data, I put a wire in A0 (I set A0 as an OUTPUT pin) and the noise get intensify.

How can I do?

Comments

  • BongwooBakBongwooBak
    For reference I had to solder it.
  • biomurphbiomurph Brooklyn, NY
    Did you solder a wire to the pin?
    Or did you solder the female header connectors we sent with the board?

    Are you still having trouble?
  • wjcroftwjcroft Mount Shasta, CA
    Bongwoo, hi.

    Let me try to clarify what you are saying. You are using A0 as a digital output pin. And when you stream output data to that pin from your Arduino program, you are seeing a lot of incoming noise, from the analog input pins A1 through A5? Or are you referring to noise you see on the EEG input channels?

    Is it possible you have some kind of ground loops or issues with the grounding of your signals getting intermingled? When you do not output on A0 does the noise stop?

    William
  • BongwooBakBongwooBak
    biomurph// I solder the female header connector. Still have a problem.

    William// I see on the EEG input  channel. And I check the ground, so I think there are no ground loops. And the noise stop when I disconnect the wire with arduino board.

    Thanks!
  • biomurphbiomurph Brooklyn, NY
    Please include more information so that we can help troubleshoot this better.
    Attach a photo of your setup, and also the code that you are using (github?)

    There is likely a simple reason for the problem
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