Notification when phone is idle

Would it be possible to get a notification when the android phone is in idle, like it does when receiving an SMS; with a “bzzz” and signal?

EDIT: I just noticed that push messages worked this way, but would it also be possible to get this functionality for other functions too? (Like LED, Vpins and so on)

I’m not sure what you mean, can you explain a use-case for this? Would you like to get messages when a Vpin turns on or something else?

Well, you could do this by Blynk.notify() in any place in code you want. The only restriction is notifications are limited with 1 message per minute. But for local server you could easily change it.