maybe the message was retained. You can remove a retained message from mosquitto by publishing a retained zero-length message with that topic.
E.g. mosquitto_pub -t domoticz/in -n -r

Seems to be a monologue, but I think the issue was found - my sensors might send >100% RH values. It's been raining and I just looked more carefully into the data. There was 102% values for long time (for the two sensors that keep disappearing). This likely confuses Domoticz. I added a 100% limit to ...

I was earlier testing RS485 node via normal USB serial, so assuming I understood what you want I think you can do it in two ways: 1) make the Mega a serial MYS GW and connect it via USB to RPi. Domoticz can directly use it as serial GW (at /dev/ttyUSB0 or similar). GW should also be able to have ...

Happened again last night, weather sensor stopped updating. This time I might (?) have a clue of what's happening - weather sensor seems to do this mostly. It is far away and I have seen occasional dropped updates. It sends 5-7 values and sometimes one or two of those get lost. Has not been an issue ...

This topic was touched under another one, but I think this needs new topic: I' m using latest dev branch on RPi (now 3.9139). Have multiple Mysensors nodes some of which have temp+hum, one has temp+hum+baro. My nodes report using separate child IDs for each sensor. One uses temp 2 hum 3, another ...