No EEG signal (.1 uV only), on new board

elizondo93elizondo93
edited November 2015 in Cyton
Hi everyone,

I'm having a problem with the initial setup of my openBCI board. I'm using a 8 channel 32 bit board and Mac OS X. I got to the point where you sync the dongle to the board by using the software. The only problem is that I can't get any data after that. Initially, all eight channels show some readings and after a second, they all settle to 0.10 uVrms +- 0.02 uVrms.

Things I've tried:
The way that I can get it to show a signal is by using a multimeter on Diode Test mode:
  • By connecting multimeter positive to SRB1 and negative to N1 I get the signal to "RAILED"
  • By connecting multimeter negative to the Bias and tapping the positive to N1 I get timagehe signal up to 200 uVrms before going back to normal 
I'm I doing something wrong? Any suggestions?

* OpenBCI dashboard image reference: 
image

Thanks,
Eddie

Comments

  • tonyftonyf Boston
    edited November 2015
    I'm seeing exactly the same. Just received a new board last week.
  • biomurphbiomurph Brooklyn, NY
    edited November 2015
    I spoke with @tonyf today. Really unsure as to what the issue is. He will be sending back the board that he has for us to debug here in the lab. 

    @elizondo93, could you do a test for me on your end? Please re-program the board, following the instructions here
    and let us know if that changes anything.



  • biomurphbiomurph Brooklyn, NY
    @elizondo @tonyf

    In diagnosing this problem, could you both tell me what radio channel you have? It is noted on the static baggie sticker 'Channel n"

    Thanks
  • tonyftonyf Boston
    Mine is in the post. You should have it tomorrow. I did successfully re-program the board, but in my case made no difference. Thanks, Tony
  • biomurphbiomurph Brooklyn, NY
    Thanks @tonyf ;
    I'm going to visit our fulfillment center to examine the hardware we have in stock to see if I can replicate the problem.
  • elizondo93elizondo93
    @biomurph

    Sorry for the late response! I just did a re-programming of the board with the same results. I get the same initial burst of data, that settles to .1 uV after a second (like in my picture). I have a video of it too, if you want it, I can upload it to youtube.

    My board is Channel 5.

    I also took the liberty of sending back the board (with the dongle, daisy, and battery pack - I kept the rest) to the fulfillment center. I would really appreciate if you guys can take a look at it! 

    Thanks for your quick response,
    Eddie
  • elizondo93elizondo93
    @biomurph

    Forgot to add: The board should be there within two business days and it's under my name: "Eduardo Elizondo"
  • biomurphbiomurph Brooklyn, NY
    Hi,

    We have identified the problem, and the way to fix it. We will be sending out working tech to you next week, since the holiday is now upon us all.

    Thanks for your patience!
  • elizondo93elizondo93
    @biomurph, perfect! I'll be waiting for it.
  • biomurphbiomurph Brooklyn, NY
    edited November 2015
    Shout out to the rest of the forum:

    If you are having this problem, please hold on to your tech!

    We will be shipping out replacement systems with return labels very soon.

    OpenBCI Team
  • tonyftonyf Boston
    Received the new board and all is working well! Thanks for the quick turnaround. 
  • Lua_bLua_b
    Unfortunately it seems, that I have same problem. I just should be waiting for replacement and then send my board back to you, right? Is Daisy module affected or is it just board iself? Is there any way to fix it at home, since shipping to and from Russia is expensive in terms of time and money.
  • jsuh715jsuh715
    edited November 2015
    Hello, 

    I seem to have the same exact problem. Nice to here that the issue is resolved.

    Would you guys ship out the system with return labels automatically? How should we get the replacement systems?

    Just like the post above by Lua_b, is there any way to fix here? 

    How long would it take for the replacement system to arrive to Austin, TX?

    Sincerely,
    Jihoon
  • biomurphbiomurph Brooklyn, NY
    @Lua_b

    You should have received an email from me requesting your reply so that we can get the tech turned around for you. 
    Please reply here if you DID NOT receive the email.

  • biomurphbiomurph Brooklyn, NY
    @tonyf


    Rock!
  • Lua_bLua_b
    @biomurph
    I did not receive an email. Checked spam folder as well.
  • gpeschkegpeschke
    I have such a board, and also did not receive an email.
  • biomurphbiomurph Brooklyn, NY
    @Lua_b, @gpeschke,

    Please email me joel-at-openbci-dot-com to follow up on this.


  • zj2050zj2050
    unfortunate, I have such a board ,
    No EEG signal (.1 uV only), on new board

    I have upload new firmware, but it's still no signal

    does any way to fix it ?

    my email : [email protected]
  • wjcroftwjcroft Mount Shasta, CA
    edited June 2016
    @zj2050, hi. I see you have resolved your earlier issue of not being able to connect with the OpenBCI_GUI.

    Was this board purchased recently from the OpenBCI store? (Or was it used; as another of your earlier posts was looking for used equipment.) My impression is that this .1 uV problem was only happening briefly during November / December 2015. And was then corrected. None of the currently shipping boards should behave like this.

    Do you see any larger signals when you have electrodes connected to say SRB2 (pin closest to board) and one of the channels (pins closest to board). For example holding the two leads in opposite hands should pickup some noise and ECG.

  • zj2050zj2050
    @wjcroft yes ,thanks reply, my board is shipped on : 11/20/2015, and the sales form printed 11/20/2015 13:48,
    is from 1121 industrial parkway brick township NJ 08724
  • zj2050zj2050
    the order number : 1735
  • zj2050zj2050
    no larger signals when you have electrodes connected to say SRB2, and also no signal when running fingers along the electrode pins
  • zj2050zj2050
    @wjcroft Hi,wjcroft , How can i do next step ?
  • biomurphbiomurph Brooklyn, NY
    @zj2050
    I will email you on the address that you specify above to resolve this issue.
  • zj2050zj2050
    biomurph  thanks , please send it to my email : [email protected]
       and i have fellowed this bug more than 10 days, but no one give any efficient message， please focus

  • swapswap Bekeley
    I just bought a brand new board and am having this issue. please advise. 

  • wjcroftwjcroft Mount Shasta, CA
    @swap, hi. Send an email to contact at openbci.com and reference this thread.

    Have you tried reflashing the firmware on the board?

    http://docs.openbci.com/tutorials/02-Upload_Code_to_OpenBCI_Board

  • swapswap Bekeley
    edited July 2016
    Ok, I have sent the email. 
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