Peter Gamma (Physiologist & Director) Meditation Research Institute Switzerland (MRIS)

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Is it possible to build 32 channel EEG devices based on the ADS1299 revisited?

Posted bypg@petergamma.org

Last Updated on September 22, 2024 by pg@petergamma.org

The OpenBCI architecture allows only devices up to 16 channels. But the ADS1299 chip allows for instance with daisy chain up to 97 chips in one chain. We have shortly reviewed several 32 channel devices, based on developments of Indonesian scientists, HackEEG and BEATS, a demo device from Chinese developers shown here in this picture:

But none of these 32 channel EEG devices is on the market. The only 32 channel EEG devices we know which are on the market are those from mBrainTrain and g.tec, which are expensive.

The community of people interested in such devices is small. The OpenBCI architecture comes to a limit with 16 channels, but not the ADS1299 chip. We came to the conclusion that the ADS1299 chip is not an outdated concept in the year 2024, altough many new devices also on the low cost segment are based on InfluxDB, as for instance Home Assistant. But of you are interested on the long term in low-cost high-quality physiological sensor devices, and building such devices is not your main goal in life, it is worth keeping an eye on the ADS1299 chip from Texas Instruments. The many new demo device which appeared in recent years but did not come onto the market is a sign that building devices based on the ADS1299 is not very difficult, as compared to building devices based on InfluxDB, which is still time consuming. Some years ago, Peter Gamma from www.petergamma.org started reviewing ww.openbci.com products. And he came to the conclusion, that these are device people want to make money out of it, altough it seems to be difficult. And sometimes they keep silent about their issues. And now we are at the same point with 32 channel EEG devices. the BEATS device looks interesting, but is not on the market. And we do not know why. A hypothesis is that the reason could be noise caused by the Raspberry Pi. The Raspberry Pi is a rather powerful SBC. And EEG devices do not need very powerful SBCs. A less powerful SBC or microcontroller could be the solution.

Information for product sellers who do stock market speculation and scalping with products mentioned by Peter Gamma on www.petergamma.org

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According to the little experience of Peter Gamma from www.petergamma.org, many of the products listed here are still full of issues which need to be resolved. If you do stock market speculation and scalping with those, you will loose Peter Gamma from www.petergamma.org as a buyer of these products and as a reviewer. Is this not risky? Will you not loose a majority of your costumers as well?

And is it not so, that society in general does not accept stock market speculation and scalping with products as those which are listed here? And will you not be politically incapable of finding a majority of the voters if you do stock market speculation and scalping with these products?

And as a consequence will you not be condemned and punished by a political referendum soon? Especially if you do this to a Swiss, since are not majority of Swiss against stock market speculations and scalping with people on a budget? And people in Switzerland are known for a lot of political referendums, since we have direct democracy in this country.

And Peter Gamma from www.petergamma.org will fight up to the European Court of Human Rights against people who do stock market speculation and scalping with the products which are mentioned on www.petergamma.org. And if they do not have yet the legal basis there to do so, he will fight for it.

What is a scalping?

Scalping is a trading strategy in which an investor buys and sells a single asset multiple times throughout the day. The goal of a scalper is to make a small profit over a large number of small trades, rather than a huge profit on each individual trade.

What is a scalper?

A scalper is someone who buys something and resells it at a price far above the initial cost. For instance some says: “He got theater tickets through a scalper”: Someone who buys tickets to an event in order to resell them at a profit. And is it not also scalping if you take reviews from this site to make out of it a new product offer, and sell it for a higher price? We doubt that you will be successful with it. Since Peter Gamma will review your product and will user not come back to www.petergamma.org after that?