Stellarpowers tests about Chinese OpenBCI modules:

https://openbci.com/forum/index.php?p=/discussion/comment/18697#Comment_18697

Jeneson issues with the connector between Cyton and Wifi shield:

Hardware developer Jenelson with many years of experience had issues with with the communication between his OpenBCI module and his WIFI shield, how can he solve this?

Alwayswearhats hardware modification for the Wifi shield:

https://openbci.com/forum/index.php?p=/discussion/2108/measured-shield-regulated-3-3v-supply-has-6v-dip-at-1-second-intervals-with-resonant-ringing

The instruction for the cable version:

https://github.com/WinslowStrong/OpenBCI_Wired_USB

We do not know of independent users who would have confirmed that the Bluetooth version of the Chinese OpenBCI modules would work:

The connectivity of OpenBCI modules sold on eBay & Aliexpress

Alternatives from biosignalsplux have bcome expensive as well

• 4-Channel biosignalsplux Kit

• €1.950,00

4-Channel biosignalsplux Kit

• 8-Channel biosignalsplux Kit

€3.950,00

8-Channel biosignalsplux Kit

It seems that the issues could be resolved in principle. But it is time consuming. And we do not know of no community which would have taken over these solution. It seems as if these projects where given up at the point described here.