Oh great, the next Hackerbox dropped (https://hackerboxes.com/collections/past-hackerboxes/products/hackerbox-0122-ouroboros) and it has me thinking back to
@lcamtuflcamtuf
's posts on trans-conductance amplifiers. In high school I tried to build an EEG, and then downgraded to a EKG because I couldn't work with signals that were as small as brainwaves.
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