Incorrect water level of air humidifiers

[OleksandrBerchenko]

The water level of air humidifiers is incorrect (assuming that the value in Mi Home is correct).

You have the following code (https://github.com/rytilahti/python-miio/blob/master/miio/airhumidifier_miot.py#L135):

return int(self.data["water_level"] / 1.25)

1.25 here should be changed to 1.2. But you are right, 125 still means the full (actually, overflowing) tank.

UPDATE: The model of my air humidifiers is zhimi.humidifier.ca1.

[rytilahti]

Ping @bieniu

[bieniu]

1.25 here should be changed to 1.2

Why? Do we have any specification for this?

[OleksandrBerchenko]

We have the Mi Home application. If you change 1.25 to 1.2, you will get the identical value.

[bieniu]

Not on my humidifier, I have 98-96% when depth is 120.

[OleksandrBerchenko]

Oh, really? What model do you have? I have two zhimi.humidifier.ca1 with the latest firmware. They worked that way from the very beginning.

[bieniu]

Really, my zhimi.humidifier.ca1 works that way.

[OleksandrBerchenko]

Right now, I have the following values:
Humidifer 1: MI Home: 84%, python-miio: 81%
Humidifer 2: MI Home: 75%, python-miio: 72%

[bieniu]

What are the depth values for these percentages?

[OleksandrBerchenko]

What is the easiest way to print raw depth values? I'm using this library through Home Assistant.

[bieniu]

Add this to the configuration.yaml file:

logger:
  default: warning
  logs:
    homeassistant.components.xiaomi_miio: debug

With this, the log will show full humidifier states, look for lines with text "Got new state".

[OleksandrBerchenko]

Thanks, that works.

humidifier 1: depth: 68, water level: 54, mi home: 56
humidifier 2: depth: 95, water level: 76, mi home: 79

[bieniu]

For your humidifiers 1.2 gives much better results. I'm curious why for mine 1.25 is better. I'll try to make some research in this case but I don't know when. There was an attempt to break into my apartment, so my world is turned upside down now.

[OleksandrBerchenko]

Oh, I'm really sorry to hear that. That sounds awful!

No rush: I have already workarounded this issue by a correction formula in HA.

[OleksandrBerchenko]

Just in case, one more observation:

When the tank is full, depth is 120 and Mi Home displays 100%. But if you continue to add water, suddenly depth jumps to 125, but Mi Home continues to display 100%. In HA I just translated 125 to 101% that means "overflow". And BTW, if you open the cover, depth becomes something like 127 (as far as I remember).