A g.tec medical multi-purpose headset with 32 channels plus accessoires costs 50 000 USD. The 32 channel amplifier alone is 20 000 USD. Devices from mBrainTrain where not interesting enough for us personally to request a quote, but we estimate a 32 channel EEG device from mBrainTrain costs $5,267.52. Since Peter Gamma from www.petergamma.org started reviewing several low cost 32 channel devices where developed based on the ADS1299:

Indonesian scientists wrote several papers using the ADS1299 demo kit from Texas Instruments with 32 channel and daisy chain.
Adam Feuer showed a demo based on the Arduino Due with 32 channels using the ADS1299
There is the «BEATS» device from China with 32 channels which uses the ADS1299 and daisy chain.

But none of these three devices are on the market. We found that it is relatively easy to build new devices based on the ADS1299. If you make a google picture search for it, you can find several devices. What is currently on the market is OpenBCI modules sold on eBay and Aliexpress. And if you are skilled enough you can repair those. And PiEEG is currently on the market as well. You can test PiEEG with all the Raspberry Pi models, inclusive solder a Raspberry Pi RP2040 on it, to see if you get a device which is free from noise.

The 32 channel EEG devices based on the ADS1299 seem currently to be abandoned. You can try to find out what is wrong with the «BEATS» device. Hobbists can try to build their own 32 channel EEG device based on the ADS1299, and then let it develop with PCBWAY. But we do not know if PCBWAY belongs to Texas Instruments as well, and if you build an affordable 32 channel device based on the ADS1299 and want to sell it, you never know if PCBWAY adapts the prices for manufacturing your device to $5,267.52.

Such a price adaption happened with a 32 channel EEG board based on the using the ADS1299 which started selling on Aliexpress for around 700 USD, and is now $5,267.52:

https://www.aliexpress.com/i/3256802367049230.html?gatewayAdapt=4itemAdapt

Aren t demos and products with the ADS1299 from Texas Instruments are full of intransparancies and unclarities? Why for instance has the «BEATS» device been abandoned? Did it has issues and was it not worth it to repair it? And which issues did it have? Hobbyists can try to build their a 32 channel EEG device based on the ADS1299. But the risk is there that the price to manufacture their device is adapted to $5,267.52.

For Peter Gamma from www.petergamma.org it is worth reviewing devices based on the ADS1299. It has become a bit better since we started reviewing. But we see still no straightforward solution to ground our project on the ADS1299. That is why also hobbists should keep an eye on developments based on InfluxDB. The hardware costs of a 32 channel EEG devices is around 700 USD, or has even dropped slightly. And the more we understand about InfluxDB devices, the easier is it to build those.

For Peter Gamma from www.petergamma.org it is eventually worth to buy OpenBCI modules on eBay and Aliexpress and to see if he can repair those. OpenBCI has a 10 year history of development behind it and many software options. We think it is possible in theory to build devices based on the ADS1299 with more than 16 channels, which are also affordable. But we has physiologists see currently no option to do this which is worth doing for us personally. If you are an electronic engineer this might be different. But we personally are not looking for another device which costs $5,267.52 as a device from mBrainTrain developed by the next electronic engineer.

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

**************************************************************************************

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?