Measure at a higher sampling rate

stuffdeveloperstuffdeveloper Indianapolis, IN
in Cyton

Is it possible to sample the EEG channels at high rates like 4 kHz?

Comments

  • wjcroftwjcroft Mount Shasta, CA

    Not currently. That ability was intended to be available with the Wifi Shield, which has been paused for engineering revisions.

  • stuffdeveloperstuffdeveloper Indianapolis, IN

    The board itself is capable of doing this right? The issue is transmitting the data? If I connected the board directly to the dongle or saved the data on a SD card, there should be no issue?

  • wjcroftwjcroft Mount Shasta, CA

    Yes the ADS1299 ADC chip is capable of higher sample rates.

    Without the Wifi Shield feature, the firmware does not support 'direct' connections or storing at higher rates to sd card. Additionally with the sd card buffering must be considered and can constrain the sample rate.

    I believe if you do some forum searches you can find previous suggestions for faster sd card storage, but those were done on much earlier firmware revisions. Thus not recommended.

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