To add on, we tried multiple FAT32 formatted SD cards and firmware 3.1.2 was reflashed.

Can you send an email to contact at openbci.com to converse with tech support? Is it possible that the capacity / size of the Sandisk card, might be a factor? Smaller is generally better. But that doe

A fresh Sandisk SD card was formatted using 'SD formatter software' as suggested by OpenBCI (overwrite format). Another open-source software was used to ensure the FAT32 format partition.

I was wondering if there is a way to record data of the 16 channels to the SD card without having to connect/initiate it via the dongle to the GUI.

As Richard pointed out, you can record to SD card, Cyton + Daisy at the full 250 Hz, including the 3 Aux channels. But the Bluetooth streaming protocol limits you to 125 Hz when using Daisy.

We just updated this Doc in the last week based on very recent investigation from our Software Team. We are currently developing fixes for Cyton SD card functionality and the WiFi shield (finally!). W

Yet, on the OpenBCI Shop website, it states "However, if you select the "save data to microSD card" option in the OpenBCI GUI, you can take advantage of the 250 Hz sampling rate."

The 'real-time' streaming from the Cyton is limited to 250 Hz because of the radio packet bandwidth. It may be possible to increase the sample rate when recording to SD card. However there have been s

Are there other viable alternatives for the wifi shield at this time? I'm also looking for the higher sampling rate it provides but SD card is not an option. I saw some 3rd party WiFi shields but I'm

While playing back the logs from SD Card log in OpenBCI GUI, we could see that the stream showed railed and not railed information too, but we could not see any bit which is related for railed informa

I'm trying to check if a file name exist on the SD card so that I won't overwrite it. From what I saw, the Sdfile class doesn't have the exists() method - so is there a different way to check for this

If you have found a firmware fix that works, then that would seem to solve your issue, does it not? Most likely the section of firmware that estimates SD card file size, just needs updating. Your curr

i will bring this cyton SD card streaming/recording data issue to the attention of the engineers tomorrow morning.

I want the music to play wirelessly from my laptop to my earphones and that is why I want to make a subcircuit for the audio. If the EEG is in the desired frequency band then a 'trigger' will be sent

It seems likely that if the dongle is sufficiently close to the Cyton, that packet loss would be zero. Providing that there are not other interfering wireless sources in the area. If this is the case

It seems likely that if the dongle is sufficiently close to the Cyton, that packet loss would be zero. Providing that there are not other interfering wireless sources in the area. If this is the case

There were packet loss initially so we went ahead with SD Card log, but with proper alignment of dongle (Dongle's antenna) with Cyton board, even the system logs had 0 % packet loss. But still sometim

i will bring this cyton SD card streaming/recording data issue to the attention of the engineers tomorrow morning.

Probably does not matter much since SD cards are so large anyway. [shrug emoji]

William, no, the multiplication is only for defining the block write size of SD Card. We have not touched anything related to 8 channels.