There is likely something wrong with your Reference connection to SRB2. Are you using the pin closest to the board? Are you saying the RAILED condition goes away with the cup electrodes? 70 uV still s

I use the 8 channel OpenBCI board, and everything goes well until I wear my headset. Suddenly, 8 channel turned into  "near railed"  then "railed". And all channel share the same w

I also tried using one channel only, Ch9, and connecting it to the Daisy. But the GUI said everything was Railed or Near Railed. Could this mean I soldiered the Daisy incorrectly or I have defective D

Ok. Thanks. I think I was able to it figure it out. The GUI shows activity for most of the electrodes when I'm wearing the Ultracortex only if I do not have the 2 ear clip electrodes on. But whenever

Its either the daisy module or the board. When I connect the reference (SRB2) in the daisy module, i get correct EEG readings for the channels connected in the daisy, and railed for the main board, an

When I tried to performe the test, all channels were not responding, the only thing that I could see in my screen was ¨Railed". After that, I tried to generate a signal by touching the electrodes

I try to use them the signal appears ¨Railed¨ in all channels and there

Hello guys... I tried to power up my board with an external battery (not the x4 AA battery pack) because I need to feed an analog sensor too. The first trial the D9 diode break down! And I was worried

Thanks, I was able to get the board reflashed, but am I still not able to read any data using my script ( same UnicodeDecodeError), and all channels appear as RAILED in OpenBCI_GUI.

This is Chip @chipaudette 's code. I believe dark red is indicating RAILED or out of range. And the working electrodes are "averaged" into a kind of "heat map" using a color scale

What is going on with the channels marked as RAILED? Can you turn off unused channels?

How come this picture is so much different than the last ones? If the electrode leads were not suspect, then you'd assume the GUI graphs would look the same? Everything is railed here.

You can disable the unused channels so that they are not showing "Railed".

The GUI shows "Railed" when microvolt magnitudes for the channels are off the top end of the scale. In other words, generally it means something wrong with the differential voltage measured

Yes, the daisy board has always railed.

Has the daisy board at any time ever worked correctly, or has it always railed? I see you had some comments on a previous thread,

I was hoping that when I switched from a velcro headset to an Ultracortex3 that my railing issues would end.Channels 9 through 16 are railed or near railed.

Cool! When it's not railed, the signal looks quite good, actually.I'm not sure what is happening when it freaks out like that. Is it possible to check the Processing serial terminal and check for any

* By connecting multimeter positive to SRB1 and negative to N1 I get the signal to "RAILED"

Greetings all,