(1) are you getting the 8000 hz samples ok on your SD card? Correct, the RFduinos cannot stream that fast. Yet may still stream at 250 hz.

Thank your reply, I still have three questions, one is I use SD card

is GUI for ganglion writing on SD card now ?

I'm trying to stream data from live Cyton to python but startStreaming doesn't work and error reads as below. Is it referring to an SD card? I'm running on a laptop why would a SD card be needed?

If you need to amplify the output from the modified sound card, check out some of these links,

[modify sound card to bypass output capacitors, turning it into a DC-coupled output]

https://www.sweetwater.com/forums/showthread.php?44519-Xtra-Low-Frequency-Response-Soundcard

need National instruments data acquisition card, the cost is too high, can I have good solution to get my experiment design, I had tried to send the eeg date to sound card, then connect Audio amplifi

I would like someone to tell me if the filtering functions that appear in Networking actually work. I have a Ganglion card for several months and I have never been able to receive the data respectivel

For each data line, the SD card write and serial port write may be written one after the other via what is coded as a single-threaded loop, so perhaps a delay in one delays the next.

When playing back SD card recorded session, I noticed that the Band Power widget values matched the OSC values in max while still using the data smoothing algorithm set to 0.01.

Ahhh! Thank you so much! Do you have got a clue of why the voltage values were the same in the data file from the SD-card since there should be no latency there right?

card, but worry that convert software will lead to signal distortion, so I want

didn't know what kind of better way, so the thought of using sound card output,

from the GUI to the datafile written to the SD-card which looks the same we realised this can't be the case. We can't figure out why this is and how to solve it. Someone else that have encountered th

The SDcard supports higher sample rates with the V3 firmware,

I have some problems with the stability of the bluetooth connection, especially if the participant is moving more than 3 or 4 metres away from the dongle. I know, I could use the WiFi Shield instead.

I am new one, how to send the openbci data to speaker(audio card) by matlab software, I want to output the openbci crginal data by the audio card of the PC, then I will get the signal to my other set.

One of the many reasons I purchased this OpenBCI equipment was so that I could attempt to find stray signals in the brain generated by external sources. I am attempting to do so using my UltraCortex M

Your setup is good. I had trouble following the "step 2". I'm a visual learner so send a diagram if you want! Maybe use an SD card as well so you can ensure that you don't loose any data in-