To stack PiEEG shields or to build a Pi cluster with PiEEG shields: what is the better solution?

PiEEG shields can stack: https://www.crowdsupply.com/hackerbci/pieeg So in theory we only need one Raspberry Pi and then we can stack multiple PiEEG shields. But does this not make data analysis difficult? To build an OpenBCI setup which consists of OpenBCI and InfluxDB a hardware modification would be necessary so that all the EEG channels sample at …