15-05-2016, 04:40
(14-05-2016, 16:40)laulau Wrote: There was electrical activity with strokes not very far. Can my problem come from that ?
It's almost sure that it is. I never saw spikes in the rain gauge, but have already saw large spikes in the anemometer readings, when there are very close thunderstorms. No problem with that because the anti-spike routines take care of it, but unfortunately there isn't any anti-spike routines implemented for the rain gauge (this behaviour was never reported before).
One thing that can help is use a shielded cable, and connecting the shield to earth in just one end of the cable.