@ottorino: we normally don’t provide support for DIY kits, especially for hardware related issues, because the issues could be due to soldering. Regarding the rain sensor log, it’s very likely due to a time change at the start vs end time of the rain sensor action. This is because 49710 days is roughly 49710*86400 = 4.2 billion seconds, and that number is about 2^32 — the only reason it would be that large is the end time happens to appear ‘earlier’ than the start time (due to time change), resulting in a negative duration. But since all negative values of duration will be converted to positive numbers, it results in a number close to 2^32.