3 simultaneous boards for BSPM

GraceGrace
edited December 2015 in Software
Now I design the BSPM using 3 openBCI (with Daisy module) to get EKG signal.
So I have two questions.

First, how can I get the signal using Proccessing program. Is there any different with learning?
openBCI can't get the signal.

Second, how can I use 3 openBCI at the same time.
Should I use 3 dongle? 
Can I use Arduino uno or Breadboard?

Comments

  • wjcroftwjcroft Mount Shasta, CA
    Grace, hi.

    I was not familiar with the term BSPM. Just looked it up, I believe it stands for Body Surface Potential Mapping, correct? A form of high density ECG, using between 32 and 300 electrodes. Wow.


    If you have 3 boards with daisy, it sounds like you may want to use all these 48 channels for BSPM.

    Each OpenBCI board (with dongle) is represented by sample data coming in on a serial port. However note that these 3 sampled data streams are not synchronized. So your samples could be skewed or offset on the 3 ports by one or more sample times (125 sps with the daisy). If you are doing some sort of tomographic 3D source localization, this may be difficult.

    As long as your 3 boards are on separate channel numbers (see the packaging each board came in), the dongles should be able to all operate simultaneously.

    re: Processing language example. I would look at our OpenBCI_GUI source on the Github, and try to model your code after what that is doing.


    William

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