If you build from PiEEG a device with 32 EEG channels as described here: https://forums.raspberrypi.com/viewtopic.php?p=2208393#p2208393 which can compete with a gtec medical multi purpose headset with 32 channels which costs 50 000 USD: There is a risk that the PiEEG costs will increase from 350 USD as it currently is: https://www.elecrow.com/pieeg.html to 12 500 USD. …