Is a working SD Card (still) on the Ganglion roadmap?

gubbeengubbeen Calgary, AB
in Ganglion
I gather that a working SD card was considered early in the Ganglion project and hardware is obviously onboard, but firm/software hasn't materialized.

An earlier discussion
didn't come to a clear conclusion.

I see some SD-related bits and pieces in the Ganglion github section, which is hopeful (or maybe a red herring for somebody who knows next to nothing about programming). 

I purchased the Ganglion with the intention of implementing a 'headless' sleep EEG recorder, but read too much into the development discussions and componentry and didn't really notice that 'SD Card' is missing from the sales-oriented specs.

Is SD functionality still on the Ganglion roadmap, or has it fallen by the wayside?

Comments

  • gsorgsor CA, USA
    I'm wondering this too. We've purchased the Ganglion with SD storing in mind but it doesn't seem to work. We have ran a few recordings with an SD card inserted into the slot, but the data continues to be stored on the computer and the SD card is found to be empty. 

    Moreover, unlike recording with "Cyton", the OpenBCI GUI doesn't give the option to write into an SD card when setting up the system. 

    Will this be addressed in a future software update or is the Ganglion not meant to store into an SD card?
  • biomurphbiomurph Brooklyn, NY
    edited March 2017
    The Ganglion will support and will record data to a microSD card. You can follow the same general guidelines here
    to make sure you have the right quality SD card and format it correctly etc.

    Currently, the SD card writing is not revealed in the GUI. We are working on a new release of the GUI to be available within a week or so, and it will either have the SDcard setup tool panel, or it will allow users to use keyboard commands to set up the card, etc.

    There is a known issue when writing to the SD card on Ganglion. The maximum speed of the SPI clock is 4MHz. This limitation is baked into the metal that the Simblee is made from. Writing at 4MHz is slow, and it causes noise in the signal. The power level of the noise is not that high, and so it might be acceptable for some users. This definitely requires more data and testing.
  • kuisikuisi

    I already bought the two boards (ganglion and cyton) . Next week I want to do sleep EEG recording tests on SD card and compare results. When will the GUI be available to be able to record on the SD card? 

     Thank you
  • mimodarmimodar Melbourne, AU
    SD card writing is still not revealed in the GUI for Ganglion.

    Is there any workaround to record to SD while we wait for the GUI update?

    Some signal noise might be acceptable for my intended use (EMG to track PLMS).
  • xdrouotxdrouot
    Hi all,

    is GUI for ganglion writing on SD card now ?

    What is your solution to perform sleep recordings and record sleep on a card ? cyton ?

    thanks for you help !

    Xavier
  • wjcroftwjcroft Mount Shasta, CA
    I don't see the issue logged on the GUI issues page here,


    Can one of you open an issue for the Ganglion specific problem, and also ask if there is a workaround involving "keyboard commands", as Joel suggested?


    The GUI developers can't really address issues until they are logged.

    Regards,

    William

  • wjcroftwjcroft Mount Shasta, CA
    More details here,

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