mirobo vacuum sound volume control

[alexdom]

For Mi Robo Vacuum; is it possible to control a sound volume or turn it off? Is there an implementation for that with using of raw command option? Is it possible to know the list of raw commands?

[rytilahti]

I wasn't able to find out how exactly it is supposed to work, but one can pass a parameter '[number]' or 'number' to get_sound_volume. There seems to be no set_sound_volume.

Getting to know the raw commands is not so straightforward, it requires either capturing the traffic from the app to the robot like described here https://github.com/aholstenson/miio/blob/master/docs/protocol.md or reverse engineering the application/robot itself.

[alexdom]

I tried set_sound_volume, no luck. Then I tried sound_volume, and it seems to go through, but the volume is not changed:
$ mirobo raw_command sound_volume 5
Sending cmd sound_volume with params 5
0
$ mirobo raw_command get_sound_volume
Sending cmd get_sound_volume with params []
[90]
$ mirobo raw_command sound_volume 20
Sending cmd sound_volume with params 20
0
$ mirobo raw_command get_sound_volume
Sending cmd get_sound_volume with params []
[90]