If anyone is interested, I'm actually in the process of launching a similar board. Much lower noise (by about 5x, custom AFE), tuned for load cells, 4 simultaneous-sampling channels.
phoronixrly 3 hours ago [-]
Cool. What are useful aaplications of diy EEG?
kreelman 51 minutes ago [-]
In Africa, clever locals built a humidy crib from car parts. It ended up not working as a product, but a great idea. In the link below, its celebrated as a failure to learn from.
I think EEGs (Electro EncepheloGraph) can produce a far more detailed, brain related view of what an ECG (Electro CardioGraphs) can produce. An EEG can of course look into many other brain related issues.
Creating a low cost version of an EEG will hopefully at least provide some thoughts to the engineers of commercial EEGs.
Commercial devices are tied down to providing
- Full checks of the software and hardware design,
- backwards compatibility for devices over their lifespan
- A full medically based software/hardware quality check,
- Providing very detailed documentation,
- doing a full test cycle around the device
- Interacting with doctors and health experts to fully characterise the domain and typical device use.
glaslong 1 hours ago [-]
Could do more accurate but less comfortable sleep tracking
Part of what you're paying for with the ADS1299 is simultaneous sampling, which you can get by without. You could use a single-channel 24-bit ADC and multiplex it yourself with generic analog switch ICs. That gives you a much larger array of part-selection options.
Or try the newer ADS122S14.
Rendered at 04:19:19 GMT+0000 (Coordinated Universal Time) with Vercel.
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.
Thanks for pointing this out.
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)
https://www.bbc.com/future/article/20140430-why-bad-inventio...
There's another affordable humidy crib here, https://www.theguardian.com/global-development/2014/dec/25/i...
I think EEGs (Electro EncepheloGraph) can produce a far more detailed, brain related view of what an ECG (Electro CardioGraphs) can produce. An EEG can of course look into many other brain related issues.
Creating a low cost version of an EEG will hopefully at least provide some thoughts to the engineers of commercial EEGs.
Commercial devices are tied down to providing
- Full checks of the software and hardware design,
- backwards compatibility for devices over their lifespan
- A full medically based software/hardware quality check,
- Providing very detailed documentation,
- doing a full test cycle around the device
- Interacting with doctors and health experts to fully characterise the domain and typical device use.
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...
Or try the newer ADS122S14.