Strikeroot
Strikeroot
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William, I have only tried Wifi direct mode.
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Ah, thanks William. All this wave analysis stuff is a very distant college EE course for me. So there is no way to devote the 250Hz sample rate to a 50Hz range limit. That's not how FFT works (I think I'm getting confused with some other paradigm li…
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Thanks everyone. The second video is Cyton+Dongle. William, so you are not saying that the FFT between 60Hz and 120Hz is electrical artifact from the boards themselves. Rather, that the signals in that range are indeed real biosignals but are pre…
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I appreciate your recommendation about the sampling rate and so on @wjcroft. And I will look at my requirement specs again in light of it. But then why is anyone on these forums looking for sample rates beyond 250Hz? Moreover, that debate is not so …
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Hey @retiutut, I'm just grateful to see that thread so I know I'm not going crazy. Unfortunately, Cyton+Dongle isn't getting me the sample rates I need. Hence the promise of the WiFi shield. I guess I will resort to Ganglion. This serious incompa…
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Holy smokes. What a saga. @retiutut, when you say: To reiterate, I have tried two WiFi shields with Cyton, Cyton+Daisy, and two Ganglions, and this problem only occurs with increased number of channels when using Cyton or Cyton+Daisy with t…
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Happy to report that OTA update worked like a charm.
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Just after posting I found: https://docs.openbci.com/docs/05ThirdParty/03-WiFiShield/WiFiProgam I'll be giving it a try now.
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@dancingdarwin said: I highly recommend switching to the WiFi shield now. I've been getting <0.5% dropped packets at 1 kHz sampling rates with very little configuration. Please tell me @dancingdarwin, is this paired with Cyton or Gangl…
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I understand the sample rate on the Cyton is fixed and reliable. Sorry if I'm not phrasing this well. I mean the end-user sample rate, or the rate at which the OpenBCI_GUI receives the data or that one can access the raw data on the PC / client side…
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Hey @retiutut — Thanks for all the updates to OpenBCI_GUI. If you read this thread, you'll see we found the end-user sample rate very inconsistent. Did you do anything specifically (with Hub or the Py libraries) to improve the ultimate sample-rate t…
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Did you end up getting your wired connection working @geraldo ?
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@retiutut Thanks for getting that disclaimer up there. I only wish I had taken it more seriously! I definitely need the data as reliable, consistent, and real-time as possible. And though I'm guessing you tried everything before falling back to the …
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Argh... thanks @wjcroft — but jeez, again I have been misled by following the OpenBCI website! Can someone please update https://openbci.com/index.php/downloads to point to the new pyOpenBCI? Right now it directs readers like myself to the deprecat…
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Indeed @wjcroft — in the last few minutes we discovered that... python user.py -p /dev/tty.usbserial-DM01HZ0H --add streamer_osc yielded low and variable sample rates from 146-200 python user.py -p /dev/tty.usbserial-DM01HZ0H --add streame…
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Hey @wjcroft — not seeing stead sample rates even using python SDK on OSX. --- at t: 730.195457862 --- elapsed_time: 10.000505103000023 nb_samples_out: 1751 sampling rate: 175.09115609317797 --- at t: 740.196993717 --- elapsed_time: 10.0015358550…
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I checked out OpenViBE but it doesn't currently work on Mac. Using the Cyton libraries might be our best bet for getting the data more directly.
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Could we more simply streamline things by ditching the OpenBCI GUI and runn Hub by itself? So far we've been using the bundled version for Mac.
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Ah... let's assume the Cyton is capturing and transmitting steadily, and that the irregularity is introduced elsewhere. How can we cut out the irregularity? Is there a way to access the received packets as soon as they come in, and bypass the GUI en…
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Instead of guiding us to plug in only one battery to the WiFi Shield, I recommend the getting started guide for WiFi Shield be updated to say: "Connect one or more batteries to one or both boards until it starts working."
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I understand William. Thanks for the efforts. Yes, latest firmware. So... I it just started w/ UDPx3... why? I have no idea. I guess I just didn't try to start it over and over, which seems to keep yielding different behavior. This thing seems quite…
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I have not, as that advice seemed geared toward a packet loss issue — not UDPx3 / UDP failing to transmit a single packet, as is the issue I'm experiencing.
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Wow, he certainly has! Thanks for the heads up @wjcroft. I read the links you sent. Reliability and avoiding packet loss is one thing, while I don't seem to be getting any data whatsoever out of UDP/UDP3 after initiating a session. Have you seen any…
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Yes. I tried that first. Funny how the most reliable setting doesn't work at all for me, while TCP/IP does. What's the trick to getting UDPx3 to work? Do I need to plug in a third battery maybe? (j/k).
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Whoa. I just plugged in a fresh battery (LiPo) and for the first time ever, the 'OPENBCI BOARD' query returns 'Cyton'. Whereas previous attempts it returned 'none'. Alas, when I hit 'Start Session' I still got the red error message at the bottom of …
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