And after the tolerance of often getting railed signal and never get all 8 channel online the ThinkPulse™ Active Electrode just came out and fits my needs. However without AVDD and AVSS I don't know i

I have checked with the OpenBCI GUI to make sure all the electrodes are ok and not railed or anything. But when I used brainflow this is what happens.

2. the Not railed displaced?

set the gains properly and my signals are again railed. I haven't dived in to the brainflow source yet, but is there a reasonable workaround for this? (Running the OpenBCI gui and serving the data ov

electrodes, it might happen that the signal is railed and that the gain of this particular channel should be reduced. According to my understanding, this gain is just a magnification of the signal t

any streaming starts, I get signal that aren't railed. The signals are still much noisier and larger amplitude, even with gain at 1x, than I'm used to looking at with the eeg cap wet electrodes but I

thanks William for your suggestion: Daniel contacted us indeed using the form on our website, I replied with a few basic tests. High gain is probably the reason why it's railed: when using ThinkPulse

are connected to the ears, the signals are all railed. If they aren't, the signal values are huge (100s- to 1000s of uV), noisy, and do not seem to reflect brain waves (not surprising, but demonstrat

My issue is that when I plug it in to the Cyton (VDD to +, Ground to GND, Pins in 13 and 18 ), and start to Stream Data in the GUI, I get all >98% RAILED readings on the channels (I've been usi

You always want to use your mains notch filter. So the screenshots you posted are a bit hard to interpret. But it does look like you were not seeing any RAILED conditions; which were showing up on you

1. Yes, our channels get railed very easily. We swapped the bias and ground, it made no difference. However for some reason today we are not railed, but the last week of trying the device, we were. We

pressed the 'ohm' button on. But instead you see RAILED.

On my Mac, from what I see so far, I am able to compile and upload the modified code successfully either via FTDI or OTA. However, when I test my Ganglion with OpenBCI GUI, the impedance values are wi

It reacts of course as I touch electrodes (note "railed" and "not railed" appear somewhat random, when the session starts).

As seen on the screenshots, there are no RAILED channels and impedance measure looks decent. Aside from a 50Hz artifact, the rest looks col to me. It is T3/T4 bipolar montage with a ground at Fp2.

Railed means the wire has a very large DC offset, one too large to allow it to be shown on the graph given its units. See:

Will skim through the "Railed" threads, William.

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

What RAILED means, anyway?

I would be suspect of the 0K impedance number. Might indicate something miss-wired. You cannot get impedance that low from skin. The fact the other channels show RAILED is also odd. Are you using the