Using the exact same setup but with the board that has never been used in any of the impedance measurement test:

I have in my possession two Cyton boards (let's call them Cyton A and Cyton B ). As reported in another post here https://openbci.com/forum/index.php?p=/discussion/3726/electrode-impedance-test-using-

Richard @retiutut and @philip_pitts, I'm not trying to argue with any one or examine source code differences. The fact is, these two users have proven that the impedance algorithm is busted. Something

BoardCyton class for sending the command to start checking impedance:

Richard @retiutut and @philip_pitts, both these users have already found that the resistors they connect to Cyton, do NOT read correctly in the impedance widget. So something must be causing this issu

The real source of truth for talking about ADS1299 and injected current impedance measurement is the official Data Sheet.

When looking at Chip's blog (https://openbci.com/community/openbci-measuring-electrode-impedance/) it seems like he advises using the BIAS electrode. However when looking every other documentation onl

https://openbci-stream.readthedocs.io/en/latest/notebooks/A2-electrodes_impedance.html

The original version of the impedance check in the old GUI (prior to the widget) used to work properly. So this is likely some issue that surfaced when the code was refactored. I'm guessing that a Git

One other test you could make is with an older version of the GUI, BEFORE the Impedance Widget was introduced. In that era, the impedance measuring was turned on with the little 'ohm' button on each l

JLG, thanks for your comments and confirmation. The original version of the impedance check in the old GUI (prior to the widget) used to work properly. So this is likely some issue that surfaced when

high peaks at many frequencies and sometimes the impedance values just decrease over time and the ADS ends up railed.

One other test you could make is with an older version of the GUI, BEFORE the Impedance Widget was introduced. In that era, the impedance measuring was turned on with the little 'ohm' button on each l

https://openbci.com/forum/index.php?p=/discussion/3726/electrode-impedance-test-using-the-gui-widget#latest

https://openbci-stream.readthedocs.io/en/latest/notebooks/A2-electrodes_impedance.html

I am measuring Electrode impedance by the method as below, here I am not using RLD (since not testign with head).

Is there a way to measure Skin contact impedance or Electrode tissue contact Impedance?

* Impedance: less than 10k

If you are seeing the same impedance on every channel, suspect your Reference electrode connection. Because with EEG, this is shared as the paired differential pin with each EEG channel. So inspect al

I´m struggling with my ganglion board because when I make the impedance test, It shows impedance levels of 10737.7k on every channel I´m using. Because of that, I can´t take any measurement, so I wond