chipaudette
chipaudette
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From my perspective, the choice between the 8-bit board and the 32-bit board matters only if you are ever going to change the software running on the OpenBCI board itself. Alternatively, if you are only ever going to use OpenBCI to stream data to t…
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I have not tried V1.0.X. Since the OpenBCI docs for the dongle say to use one of the Arduino BETA IDE's (ie, V1.5.x), V1.5.8 is the only version on my computer now.
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Note that I was using the RFDuino USB dongle thing (which you show at the end of your docs: http://docs.openbci.com/tutorials/03-Upload_Code_to_OpenBCI_Dongle). I have not tried it with the OpenBCI dongle.
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As another viewpoint, the OpenBCI 8-bit board is an Arduino Uno on the inside. You can reprogram the OpenBCI board using the Arduino IDE just like any other Arduino board. For more information, see here: http://docs.openbci.com/tutorials/02-Uplo…
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Joel, I just tried the new repo. I also used the latest Arduino IDE (V1.5.8). I got the same error as before...it wants the g++ compiler, which apparently is not part of the Arduino IDE anymore. The workaround above (swapping in the gcc compiler)…
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It turns out that my first post above isn't quite accurate. With V1.5.8, I had to put the line "#define __PROG_TYPES_COMPAT__" not in SDCard.ino...that doesn't seem to work now...instead, I had to put it in the OpeNBCI_8bit_SD.ino file. It needs t…
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I just tried Arduino V1.5.8. Same error. I just posted the issue on GitHub: https://github.com/OpenBCI/OpenBCI_8bit/issues/3 Chip
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I recently reprogrammed my 32-bit boards (it was a 16-channel version, but the main board is the same). After I got over an issue with the compiler (see post here), I also saw the same "fail...fail...fail..." error. As Joel said, you have to make…
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I concur with William's reply. To reinforce his statement, the packets cannot come out-of-order. This is not like TCP/IP over WiFi, this is a serial link replacement via bluetooth -- bytes come out in exactly the same order as they went it. Co…
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@XS2Mind, Is there any way that you can share the full data file with me? Dropbox, google drive, github, somewhere? I'd love to take a look at the full file to see what your problem might be... Chip
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Hello William, That's more a question for Joel. All I know is that the channel is currently set via the Arduino code, which means that it is set at compile time. Sorry I don't know more on this topic. Chip
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I have some collaborators who've been doing combined EEG-NIRS as well... http://engineering.dartmouth.edu/multimodal/giacoweb.html With papers such as: http://neurophotonics.spiedigitallibrary.org/article.aspx?articleid=1902300 http://b…
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Nice work. I always love seeing different approaches to headgear.
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Whoa, this is cool! I didn't even know that there was a Serial API for Chrome. While I dislike javascript, it is a really cool idea to be able to step away from Processing and do everything in a browser. Really cool. Chip
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Another option to getting higher channel counts would be to use multiple OpenBCI units configured to different RFDuino channels. The current bandwidth limitation is for a single RFDuino on a single channel. By using multiple OpenBCI boards, you'd …
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I've not tried the latest latest latest OpenBCI GUI, but the version that I've been using (6 weeks old?) worked fine on 64-bit V2.2.1 on 64-bit Win7. hip
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ayushmh , I do not know if the GSM shield is compatible...I have never used the GSM shield. The OpenBCI board is not shaped like a standard Arduino, so the GSM shield won't plug into the board directly...it will need wires. Sorry I don't know mo…
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Hi Dhruv, Regarding the "libraries" path in "My Documents", it gets created by Processing the first time that you run Processing. It is not created when you unzip the downloadable ZIP file, so that's probably why you didn't see it. As for the…
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dhruvsakalley , which platform are you on? Mac or PC? On my Win7 PC, the 64-bit versions of 2.0.3 and 2.1 wouldn't work, but the 64-bit version of Processing V2.2.1 does seem to work fine. Chip
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Hi Marcus, In the OpenBCI_GUI, the switch for 50/60Hz is for filtering that is done on the computer, not on the OpenBCI hardware itself. The OpenBCI hardware has no filtering specific to 50/60Hz line noise...it's ability to reject (or tolerate) t…
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I collected some data from the accelerometer for the first time. If you're interested, you can see some data at: http://eeghacker.blogspot.com/2014/12/openbci-accelerometer-data.html Looks pretty good! Chip
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If you want the best time-alignment between your EEG data and any markers, you could use the Analog Input pins on the OpenBCI board. You'd have to modify the OpenBCI software, but if you have the OpenBCI board look at the Analog Input pin with ever…
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William is correct...the DC offsets are normal. Every ADS1299 system that I've worked with has exhibited this kind of substantial DC offset, but I've never tried to validate this part of the chip's behavior.
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Oh, and the updated GUI with the 50 Hz notch filter has bee accepted and is now part of the master on the OpenBCI Github... https://github.com/OpenBCI/OpenBCI_Processing Chip
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P300, Can you post the entire function? Or, better yet, do you have a Git where you keep your code? Then you can point to your git and we can offer edits directly! The reason I need to see your code is that the snippet that you provided look…
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I've got the Processing GUI revised to include a user-switchable notch filter...as soon as the software revision is discussed by the software team and accepted, you'll be able to switch between 60 Hz, 50 Hz, and none. I'm sorry that we North Ameri…
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Discussing the accelerometer is kinda straying from the OP, but I'm OK with that... Depending upon when P300 grabbed his version of the Processing_GUI (or depending upon when P300's OpenBCI board was flashed) the accelerometer data stream might no…
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It appears that the second column of your table is the packet counter created by the OpenBCI board. You'll note that it increments smoothly...70, 71, 72, 73, 74, 75...through your highlighted region. So, no data was lost, which is good. That won…
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Thanks for finding my error! I'm so sorry for any confusion! I went back and edited the post that you referenced.
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Regarding SRB1 and SRB2, they are (as William said) connected to different internal buses within the ADS1299 EEG chip. These buses allow you to route EEG signals in really interesting ways...primarily with regards to what you do for a reference ele…