Great project. Put up a small issue on Github for a couple of the links in the article.
https://github.com/Cerelog-ESP-EEG/ESP-EEG/issues/1
A quick look over the other links looks like they're okay, follow them instead for the moment.
If anyone is interested, I'm actually in the process of launching a similar board. Much lower noise (by about 5x, custom AFE) but 4 simultaneous-sampling channels.
Related:
Show HN: Open-Source 8-Ch BCI Board (ESP32 and ADS1299 and OpenBCI GUI) - https://news.ycombinator.com/item?id=46502051 - Jan 2026 (21 comments)
Cool. What are useful aaplications of diy EEG?
Could do more accurate but less comfortable sleep tracking
tl;dr it uses
Texas Instruments ADS1299 (24-bit, 8-channel) analog-digital converter
There is no way to do what that chip does for less, maybe 7$ less but then not as good. They have priced it perfectly and I hate them for it.
https://www.digikey.com/en/products/detail/texas-instruments...
Great project. Put up a small issue on Github for a couple of the links in the article.
https://github.com/Cerelog-ESP-EEG/ESP-EEG/issues/1
A quick look over the other links looks like they're okay, follow them instead for the moment.
If anyone is interested, I'm actually in the process of launching a similar board. Much lower noise (by about 5x, custom AFE) but 4 simultaneous-sampling channels.
Related:
Show HN: Open-Source 8-Ch BCI Board (ESP32 and ADS1299 and OpenBCI GUI) - https://news.ycombinator.com/item?id=46502051 - Jan 2026 (21 comments)
Cool. What are useful aaplications of diy EEG?
Could do more accurate but less comfortable sleep tracking
tl;dr it uses
Texas Instruments ADS1299 (24-bit, 8-channel) analog-digital converter
There is no way to do what that chip does for less, maybe 7$ less but then not as good. They have priced it perfectly and I hate them for it.
https://www.digikey.com/en/products/detail/texas-instruments...