1. OpenBCI EEG (up to 16 EEG channels):

«No OpenBCI products are capable of 32 or 64 channels, even with “external trigger” idea. The master clock must be aligned exactly for all ADS1299 chips.Such an expandable product IS on our TODO list.»

https://openbci.com/forum/index.php?p=/discussion/174/24-32-channel

2. Bitalino EEG (up to 18 EEG channels):

“Per BITalino main board (aka BITalino Core) it is possible to acquire up to 6 channels, 4 with 10-bit resolution (A1-A4) and 2 with 6-bit resolution (A5 & A6). Up to three BITalino Cores can be used, for a total of 18 channels.”

https://forum.bitalino.com/viewtopic.php?f=13&t=417

3. ADS1299 EEGFE-PDK (up to 32 EEG channels):

https://www.researchgate.net/publication/337896178_EEG_data_acquisition_system_32_channels_based_on_Raspberry_Pi_with_relative_power_ratio_and_brain_symmetry_index_features

4.

16 / 32 Channel EEG Ads1299 EEG Acquisition Modules

5. Is it possible to integrate multiple EEG devices with InfluxDB up to 256 channels?

Rasperri PI with Influx DB, Grafana

6. Projects by Andreas Spiess and Enric Sala:

Andreas Spiess :

https://www.youtube.com/c/AndreasSpiess/about

did a similar project with his wheather station. Enric Sala, Software Engineer and PhD in Applied Data Science for the improvement of the Energy Efficiency of HVAC systems in Smart Buildings, did a project with house sensors and wrote the Matlab client for InfluxDB:

https://github.com/EnricSala

19.1.22

William Croft from OpenBCI commented to the topic Influx Database and OpenBCI:

“The ‘external trigger’ approach will STILL not work. ALL CHANNELS need to sample at exactly the same moment in time. Otherwise many metrics such as phase, coherence, P300 sample averaging, etc., are meaningless.

larger number of channels ? — OpenBCI Forum

20.1.22

Are the metrics, phase, coherence, P300 sample averaging necessary for all applications?

20.1.22

Can these parameters not be calculated in a different way?