William Croft wrote in the www.openbci.com forum on June 9, 2025 : 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/p1 @PBarrows, no, the Wifi Shield is no longer supported. The larger capacitor was ‘thought’ to be a temporary workaround for this Cyton-Shield issue. But in fact the root cause is in the variant of the Wifi Shield firmware that talks to Cyton. …