but to actually analyze the data from the SD card. I'm a bit bummed that it looks like you have to reset the board every time you connect to it via serial (which means that data would stop being coll

(2) When collecting 16 channels of data, what is the sampling rate of the data recorded on the SD card (I'm pretty sure this is 250Hz)? 250Hz

The SD card does record directly at 250 Hz. When streaming however, the over-the-air samples are (essentially) averaged / alternated 8 channels at a time, downsampled to 125 Hz. It's possible to avoid

(2) When collecting 16 channels of data, what is the sampling rate of the data recorded on the SD card (I'm pretty sure this is 250Hz)?

I found one other bug in the software. In the SD card file conversion algorithm (convertSDFile), it's assumed that you're not using a Daisy board. If you are collecting 16 channels it only converts th

Also, I noticed that you were working on a way to connect to the board without resetting it so that you don't interrupt writing data to the SD card. Is that something that still might be coming? It wo

I've been working with a friend to develop a small enclosure for my OpenBCI 16 channel system and I think it came out pretty nicely. I have space for a 3400mAh Li Ion battery, a Powerboost 500C chargi

Still, obsessed with stirring my BTLE card to life, I turned to linux. Spent another couple of hours reading forum and change note tea leaves to guess how my laptop might respond to various distros. I

I have uploaded yj-xxxiii code to oBCI and it worked. Then I reuploaded the default v1 firmware, but SD card functionality is gone. The createContiguous function under SD library returns a false appar

I bought a SanDisk card thats on the Tutorial Page and its working now. Very interesting. Using the other card totally wrecks the recorded data and saved data format. I have no idea why.

Could this be the cause of not successfully writing to SD card?

Ok, I'll try getting another SD Card. Do you remember which cards worked other than the two on the tutorial page? This is the txt file generated http://www.filedropper.com/showdownload.php/obci19 if y

If you do not have zeros (at least 256)  at the end , it might be a SD card problem.

I've tried overwriting the SD card with SD Formatter software, but nothing has changed. The resulting files do not make any sense. The sizes of the generated files hold. a -> 256kB A ->

SD Card I'm using should be this

Pushtheworld is right,   first of all,   ensure yourself that your SD card  works.

What type of SD card are you using? Is the SD the right format? Are you able to stream to the GUI?

I understand what you mean. In @biomurph 's github, I found a HEX converter (https://github.com/biomurph/OBCI_HEX_SD_File_Converter) to convert the .TXT files to CSV with decimal data. In that repo th

results. Moreover NO data is being stored in the sdcard as well. This toolkit I am using is 2 years old, and been used for data acquisition before as well, but suddenly it is not working. I am trying

can I modify what is stored in the card, from SD_Card_Stuff.ino? How do I visualize the stored data in the SD Card?