Ganglion count-up of "Sample Index" values
ftaro
Japan
Hello.
I would like to know about the data recorded by the OpenBCI GUI.
I have confirmed that the "Sample Index" counts up from 0-100, and then starts counting again from 0.
However, the count up is increasing by two, 1,1,2,2,2,3,3,3,4,4.
I tried moving the dongle closer to the board, but it didn't change.
Do you know the cause?
Comments
Hi Ftaro,
This is normal. If you view the radio packet structure of Ganglion, you can see that the sample rate is 200 Hz. But two samples are sent per packet. So the packet rate is only 100 Hz.
https://docs.openbci.com/Ganglion/GanglionDataFormat/
Regards,
William
Hi William,
Thank you for your answer.
I see that the behavior is specific to Ganglion board.
I have solved the problem.
ftaro