Any way to receive event notifications? Like when a bulb is on?

[ryancastro]

This isn't so much a 'feature request' but more of a discussion.

I'd like to be able to subscribe to an event or something when a light is flipped on, or off... or whatever. Do the switches broadcast events or anything? any way to subscribe to them? any interesting way to do it interfacing with the device directly?

I have a bunch of HS210's (3 way smart switch) that I have installed, mostly in single-pole configurations. I'd love to be able to know when a switch is turned on so I can keep track of run time myself, or do cool things like flip another switch when one switch is triggered.

Thoughts? Creative ways to do it?

[rytilahti]

These devices do not broadcast their state, at least not locally, so the only solution is to poll them for state changes.

Many use homeassistant to perform automations like you are describing, so you might want to check it out.

[shaolo1]

Using the polling solution would that all be done over the local network? Are there any throttling issues or suggestions? To get near real time result is polling once a second too much for the api? I wouldn't want to bang away on some server like that, but it it is direct communication over local network then there is no harm?

[rytilahti]

Yes, all polling is done locally. I don't know if the devices will try to send their state to the cloud if the devices are connected to the Internet. Different devices behave differently when it comes to how fast they can be queried (bulbs being slower than plugs in my experience), but I doubt one a second would be an issue if not tear & wear on internal memory?

You can see some discussion about performance in #110 (comment) and the test script inside devtools/ directory on the project root if you want to test how responsive your devices are.