Multiple Ganglion boards
I am running 2 Ganglion boards in different rooms, albeit within 10 meters. I have found that sometimes I am not connecting to the board I intend to for each room. This is making me think there may be interference, even when it appears that I have each one connected to the appropriate computer.
Is there a way to control which ganglion connects to which pc? Like managing the radio frequency? Or, is there an option to hardwire through USB instead of using BLE? I am hoping I can continue to run them simultaneously.
Comments
No mention of how you are connecting to the boards?
With the Bluetooth dongles
We have recently introduced a new collaboration called Brainflow, which has the potential to accommodate for multi-board setups, of which I am a huge advocate. I am highly interested in facilitating multi-board setups for myself and others.
I am running them on BioEra, so separate rooms and separate PCs is essential. Is there a way to hardwire them?
This can be done easily with the OpenBCI_GUI v4.2.0 running on two computers by clicking the correct Ganglion from a list.
Maybe someone more familiar with BioEra can offer some advice?
Blake, hi.
Does your BioEra offer a unique name or identifier for each Ganglion? Or does it just connect to whatever Ganglion it finds first? As Richard mentioned, the OpenBCI_GUI lets you select the specific Ganglion by it's identifier. Even if there are multiple Ganglions turned on in the area.
If BioEra does not present such a list (for your selection of device), then that is an issue with the BioEra Ganglion device support. And could be answered / corrected with an upgrade release of BioEra by Jarek Foltynski, the developer.
Regards, William
Thanks for the responses to both of you. I am going to reach out to Jarek about this.
Do you see unique identifiers in the BioEra device selection window / properties pane, for each Ganglion?
I don't see that in the settings.
OK, then I would expect Jarek might be able to fix that quickly. He is remarkably fast on such things.
SOLVED
Hey everyone, just an update. There is a field to enter the MAC address. I had to download
nRF Connect on my Android to discover the MAC address for each Ganglion, but once I put the MAC address in the settings ( without all the : : : ) they now pair only with the selected Ganglion
httpss://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp
@Blake GUI v5.0.0(work-in-progress) will also print Ganglion MAC address to the Console Log.
Glad you got it to work out!
So, with the brainflow update, is it possible now to link multiple boards? I saw the ganglion was on sale and know some people who might purchase them if this is possible.
https://docs.openbci.com/GettingStarted/Boards/GanglionGS/#connect-the-gui-to-your-ganglion-board
@wjcroft ahh ok but you can't link up the ganglions to the same GUI or stream the channels from multiple ganglions to the same time series data?
If you used two different computers, it would probably be hard to sync the data accurately.
Correct, the solution Richard mentions in the current GUI only does a one to one connection, GUI to Ganglion.
In general, for example with EEG, you cannot really using multiple boards on the same person. Because the sample times are not synchronized. Realize that with Cyton, when used with a Daisy expansion, all 16 channels are sampled at the same instant.