It seems to be that ~4GB is the max file size for SD card recording. Is that because of 32-bit int indexing or FAT32 formatting for the SD card? Is there any way to overcome that and allocate a larger

I'm wondering if there's a way to write a timestamp (like datetime) to the SD card at the beginning of a recording. For context, I need to do a study in which subjects will be wearing the device conti

When I attempt to write to sd card (have tried many) with WIFI shield/16channels/1khz--- it instantly corrupts it

I'm having this same problem with two different Cyton boards, a new one and one that I previously was able to connect to the GUI and get data (a month or so ago). Autoscan works fine for both, but I g

Yes the recorded SD card data is completely reliable and sampled at the full 250 Hz rate on all channels.

We use SanDisk microSD read160m/s write 90m/s 128G, and format it according to the document, and then get the hexadecimal raw data through experiments; Then use the unhex () function to decode the dat

I am currently using a 2000mAh LiPo battery and getting a battery life of just about ~24 hours with recording to SD card.

Sorry to hear this is happening. Not sure what is causing the unusual file names. For example, were the unusual names created first on the Cyton mainboard firmware / SD card hardware? Or did the unusu

* While getting logs from one of the SD Card after a data recording using OpenBCI Cyton + Daisy, we saw strange behavior in file name, which we are unable to rename, nor copy or open it in any editor.

https://openbci.com/forum/index.php?p=/discussion/3235/sd-card-logging-interval-asked-for-not-reflected-in-recording

Where are you purchasing your SD cards? What country? I assume you saw the previous search link, showing that SanDisk cards are faked in certain marketplaces, even some Amazon sellers. I've found that

Did some more tests... everything was working fine for 5 minute recordings, but when I increase to 10 minute recordings, it worked the first time on the 8GB SD card and successive times the recordings

[Lower left corner, SD card box] The reader sits on the SPI bus, along with both ADS1299 (ADC) chips, the Accelerometer, and the PIC32 microcontroller. If the SPI bus logic levels (MISO, MOSI and SCLK

https://openbci.com/forum/index.php?p=/discussion/3369/sd-card-keeps-becoming-unformatted#latest

I ran all the recommended diagnostics on the card (filled it up to max capacity, ran H2testw, etc.) and it passed all checks. Today, it no longer unformats itself, but it does stop recording premature

No, we haven't received any suggestion from the team regarding failing SD Card reader module.

Is it possible you simply have a marginal / intermittent SD card?

I'm using the Cyton board and recording to a SanDisk 32GB SD card (formatted FAT32, Class 10 etc.) with ambulatory recording. It was working fine yesterday, but today, a few minutes after I start reco

Did they also suggest that you may have a failing SD card reader module?

1. To follow the SD card formatting steps mentioned on the documentation page.