a signal at all, and having all the inputs railed. It's not completely clear to me what railing actually means, but I am assuming the DC bias is measured as being too high, and the amplifier comes in

the rest of the pins. The GUI shows that it is railed most of the time, and on the occasion that it un-rails, it displays a much higher % than the other Cyton pins. Hardware problem?

re: railed. It sounds like your REF connection is poor. When all signals have similar noise, the REF connection is shared between all channels. I still recommend you watch the video link given. It sho

Data when not railed: Seems to all be the same even though they are connected to different sensors?

pins. Seven daisy boards yield flat signals (Not Railed 0.01% 0.10 uVrms), but one shows spike from time to time, cf. the attachment. I am not sure if this is an expected behavior because I cannot ge

Here is a thread (more devoted to Ultracortex) discussing solutions to railed conditions.

I would expect eeg signals that should not be railed opposing what I saw (see figure below). Could somebody please suggest me what could be possible reasons? Thank you in advance.

Have you looked over some of the 'railed' threads?

I am using Cyton-Daisy but the 12 channel always have 0 input.

https://www.google.com/search?as_q=railed&as_sitesearch=openbci.com

I just hooked up our cyton board to start training a new student on it and channels 7 and 8 show as railed (on any scale including auto). Channel 7 will occasionally respond to input but Channel 8 do

If you want to examine the GUI source code, you can find where the 'railed' status is calculated.

Is there any python code available that derives the railed logic from data?

The 'railed' categorization is done purely by the OpenBCI_GUI. There is no detection of this in the ADS1299 hardware / firmware, via special 'bits' or status indications. But do note that the ADS1299

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

By injecting current into a channel to measure impedance, it interferes with the actual signals that can be picked up from the electrode. Also, this can only be done on one electrode at a time, since

* https://openbci.com/forum/index.php?p=/discussion/2174/data-stream-wont-start-resolved-railed

No matter how I re-calibrate the Gain under "Hardware Settings", by reducing gain from x 24 to x 1, Channel 7 & 8 go into Railed mode after running for about 5-10 minutes. Further to

or Python to pre-check signal quality. 'Railed' indication in the GUI just means your signal amplitude is exceeding the maximum value for the scale you are using. There are separate threads suggestin

if I am right the railed percentage info on the GUI represents the quality of contact with the scalp. So I would like to know if there is any similar info either in the deprecated python API or the br