Would like to see the schematic and layout of the frontend board and a discussion on different design choices and tradeoffs. I designed something similar years

Would like to see the schematic and layout of the frontend board and a discussion on different design choices and tradeoffs. I designed something similar years ago (for Electrooculography, but it's the same principle) and getting a clean signal was by far the most challenging and interesting part of the project [0]. I'm not familiar enough with EEG to know whether the author's results are good enough to use it as a BCI, but it seems like they got it to work (with dry electrodes nonetheless). That's a win! https://fellerts.no/projects/eog.php https://fellerts.no/projects/eog.php