This Cyton firmware / SDK page shows the times supported. So beyond 4 hours, it also supports 12 and 24 hours:

When I open the Control System Panel to connect the cyton with the dongle, under the heading 'Write to SD card' it doesn't let me select the time beyond 4 hours. Does anyone of you know why I can't re

I suggest you email to (contact at openbci.com) to get in touch with customer support. They should be able to suggest further tests. I still recommend trying other cards for comparison. Are you able t

Giordana, did you read some of the previous comments? There are many clone / fake sd cards being sold in online venues. First suggestion would be to try different known-good cards that work in other c

Hello! I would like to record audio output from a computer being played through a speaker. This audio is the stimulus for an experiment, I record 8 EEG channels with the Cyton. In addition, I would li

The last three columns in the SD card hex file, are the "Aux channels". By default these carry the Accelerometer x,y,z values. But they can instead be configured (using "board mode"

The last three columns in the SD card hex file, are the "Aux channels". By default these carry the Accelerometer x,y,z values. But they can instead be configured (using "board mode"

We are thinking of using 16-channel Cyton+Daisy with the SD card for a higher sampling rate. However, we are having problem with inserting a marker with the python script.

Referring to the wifishield here. We've also observed higher % of packet loss when we run Cyton + wifishield like what other posts have mentioned. Our proposal here is to store data to the SD card whi

2. Would using saving the data to a SD card while using Cyton+wifishield help with the packet loss issue?

Apparently the fault was that a 64G SD card, which the openbci can't handle. I was told the documentation will be adapted.

It's possible the SD card reader/writer hardware is glitched.

the card is fine, I bought it in local, reliable store over here (FNAC, big company) and was using it before on my raspberry pi 4.

Addendum: there are MANY fake name brand SD cards being sold online.

When did you purchase this Cyton? Has it ever worked correctly? The SD card file you attached is corrupted with many garbage characters. I suggest you email customer support at contact at openbci.com.

* Brainflow (with serial command to start recording on SD)

1. How do you configurate the board to save EEG/ECG data and the external marker (e.g., AUX channel) on the SD card through the Brainflow API in Python?

We are using Brainflow API in Python to stream the data, given the need of adding external marker to the recordings. Our board is the 16-channel Cyton+Daisy. In other related posts, we've noticed that

However it did always work best and correctly with the Ganglion. Additionally the SD card slot on the Ganglion was never supported, because of timing issues with the Simblee processor. This is clarifi

I have tried to use CYTON board plus WIFISHIELD board, communicate with CYTON board through ARDUINO IDE and use the CYTON board SDK you gave, change the sample rate to 4000HZ, and format the SD card,