If you get some really small ferrie core blocks then these might reduce interference over USB-cable. Not much space to fit them though.
Also, if possible, clock-down the RPi CPU. It might help (unless it is the USB-circuit that causes it) -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
