Public announcements on different hours

[rpwong (Russ)]

That is one weird scenario. I think these two threads might help you:

Simulate presence by randomly switching lights - any rules existing?

All, I am looking for a rule to randomly switch lights in the evenings to simulate presence. In the timeframe between sunset and e.g. 11 pm check a random value and in case of … switch on a light for n minutes, with n between 10 to 30 minutes randomly. And repeat that again and again until 11 pm. Any idea or rule already available ? Thanks in advance

Duty Cycle Randomizer

I have a similar use case as this humidifier but for a diffuser. I don’t plan on using an environmental sensor input (e.g., humidity) to determine when to start/stop. I do have a tank empty sensor that allows me to turn off the unit in that case. I don’t have an accurate time to empty so I will rely only on the empty sensor. I probably will add a presence sensor eventually. I can handle the rules logic for these kinds of inputs. I would like to randomize a duty cycle for the device. For example…