Got my Pro-Stick Plus and OrangePi PC back up on the roof, just in time for their first winter outside. They’ve been running for just over a week, and in the past 24 hours the outdoor temperature has plummeted. As I write this, the outdoor temperature is -16C and is expected to drop to -26C tonight.
While 24 hours of nasty cold is too short a period to reach any definite conclusions, it appears that as the temperature drops, the noise level drops (-37.8db Avg) and the message rate climbs.
One interesting tidbit is that after the core temperature of the Orange Pi PC drops below 0C, it no longer reports a temperature at all. Using Armbian, where the login screen normally shows the core temperature, the Temperature line is now completely absent, and even armbianmonitor just reports 0.
As the outdoor temperature approached 0C, the core temperature remained around 10C and gradually slid down to 0C as the colder weather moved in.
It will be interesting to see how this setup will behave when it gets REALLY cold out here.