The issue caused noise in the EEG signal. The OpenBCI WIFI shield is not available anymore from www.OpenBCI.com . The following Ebay store offers an OpenBCI Cyton with Wifi shield, and in the description it says that the mentioned issue has been resolved: https://www.ebay.com/itm/284876280716 The Ebay store which sells this module is topcyberday and it …