Last Updated on February 6, 2022 by pg@petergamma.org

A maximum of eight MCC HATs can be stacked onto one Raspberry Pi, providing up to 64 channels of data:

Is it possible to build a 64 channel EEG device out of these?

Wich data acquisition software which runs on the Rasperri PI can be used with the data acquisition hat for Raspberry Pi?

Is it possible to make out of the data acquisition hat for Raspberry Pi a mobile data acquisition system, a Rasperri PI alternative to BIOPAC BioNomadix?

BIOPAC BioNomadix:

BIOPAC BioNomadics has up to 16 channels, the stackable data acquisition hat for Raspberry Pi would allow up to 64 channels.

added 6.2.22

Single TGAM module on Aliexpress 25 USD:

https://www.aliexpress.com/item/1005001988472871.html?spm=a2g0o.productlist.0.0.11aed89a7LDXFM&algo_pvid=60a85b61-7a9b-42fa-a576-bfbadb7099fb&algo_exp_id=60a85b61-7a9b-42fa-a576-bfbadb7099fb-55&pdp_ext_f=%7B%22sku_id%22%3A%2212000024035283806%22%7D&pdp_pi=-1%3B23.85%3B-1%3B-1%40salePrice%3BCHF%3Bsearch-mainSearch

8 individual channels 200 USD. Cost are not far from an OpenBCI board on Aliexress:

https://www.aliexpress.com/item/1005001774918442.html?spm=a2g0o.productlist.0.0.32a46c6aIvTt6e&algo_pvid=824754e8-04b1-45b0-9138-18446fa0d982&algo_exp_id=824754e8-04b1-45b0-9138-18446fa0d982-11&pdp_ext_f=%7B%22sku_id%22%3A%2212000017521877873%22%7D&pdp_pi=-1%3B201.4%3B-1%3B-1%40salePrice%3BUSD%3Bsearch-mainSearch

Cost seems to be linked to each other. Choose the option which fits best for your needs. I suppose it is possible to build your own DIY EEG system with up to 64 channels with this system. Costs will be far below a commercially available EEG system for a scientific lab, and the flexibility is bigger. But you need to develop and test the hard and software for this system yourself.

A Biosignalsplus Solo 16 bit kit is 322,50 €:

The stackable Rasperri PI HAT with 16 bit and 8 channel is 200 USD, plus costs for Rasperri PI. But you have to test and develop the hard- and software yourself.