I have tested two nights and the files I get from the SD always stop recording after 250 seconds.

I was not able to get seamless data out of the SD card.(even 250Hz) The problem is somewhere in implementation of SD stack. Every so often the SD card takes ~0.3 sec to record the data, which leads to

After recently upgrading my computer I had similar problems with the GUI failing to launch and showing a blank screen, even with up to date Open GL and graphics card drivers. However, I was able to so

http://openbci.com/forum/index.php?p=/discussion/1276/current-consumption-of-cyton-sd-card

Thanks a lot, William. I'm doing EEG, and I need the sampling rate to be at least 500 Hz. So after I have he Wifi shield, how do I increase the sampling rate of SD card recordings? I have read the com

Yes you can sample faster to the SD card. And to initiate this, apparently the Wifi Shield is required. I know that sounds like a misfeature. My impression is that it is. But that is the state of the

According to the OpenBCI website, Cyton board samples data at 250 Hz. So is it possible to increase the sampling rate of Cyton to the SD card? If so, how can I do that? What is its maximum sampling ra

Han, I answered your same question on NeuroTechX Slack channel. Cyton has an SD card you can record to.

The Daisy sample averaging does happen with the live stream; due to limitations of the Bluetooth LE radio channel bandwidth. But when stored on the SD card, the session samples are not averaged.

1) These are due to packets being dropped because of a weak power supply and/or weak RF output power setting. These spikes show up any time your WiFi Shield D2 LED blinks, with a corresponding println

In the past, when users of the GUI see a blank screen, it has been the case that their graphics card / chip drivers need updating. The GUI uses Processing language which depends on up to date OpenGL d

2- The RFduino in turn will make the ChipKit MC start recording from the desired channels with the desired sampling frequency and write directly to the SD card without sending anything to the RFduino.

So, i'm not going to send the recorded data in the time of recording to the android device, Instead i'm going to write the data on the SD card and send back the file to the android device after the re

I saw that some pins are not used on the CYTON (D11, D12, D13, D17, D18). The CYTON is Arduino compatible, so it should be possible to create  serial connexion between the CYTOn and an Arduino card. 

http://192.168.4.1/F      /*set SDcard */

Thank you write back to me. I got it. I still hope you can release a SD only firmware for V3, I feel if we only record the data to SD card, no WIFI shield, close the serial transfer data to PC, use 4

If you want to try altering the firmware, that is currently released, those Github links are in previous post. There may be limitations on how fast the SDcard hardware can respond. Thus you may have t

I don`t want to use WIFI for getting the high same rate data, I want to get the high sample rate data by SDcard only, only record SD card, can you give me a good solution? I had tried the WIFI to get

In addition, when I use the script User.py, it appers to work, but when I try to use the pluggins commands, it didnt work and appear to have an error asociated to a SD card. I must have this card in o

2 - Can i connect the MCP3912 in a microcontroller like an arduino without the sd card reader and the rfd_77101? I'd like to connect this directly to a microcontroller.