Eve characteristic AirQualityPPM

[tobekas]

Hi,
can you add Eve's characteristic "AirQualityPPM" to EveHomeKitTypes.js?

UID is E863F10B-079E-48FF-8F27-9C2605A29F52 and props are

{
    format: this.formats.FLOAT,
    unit: "ppm",
    maxValue: 5000,
    minValue: 0,
    minStep: 1,
    perms: [this.perms.READ, this.perms.NOTIFY]
};

see also: https://github.com/simont77/fakegato-history/wiki/Services-and-characteristics-for-Elgato-Eve-devices

[ebaauw]

Added in v4.0.11. I named it AirParticulateDensity for consistency. There is a standard HomeKit AirParticulateDensity characteristic with these properties. There's also a standard AirQuality characteristic, which takes an int value from a predefined list (for Excellent, Good, etc) - more like the stars for the new Eve Room (with display).

See https://github.com/KhaosT/HAP-NodeJS/blob/0840ce52cc8015dd75fb21c098bf38cf9611ea4a/lib/gen/HomeKitTypes.js#L70 and https://github.com/KhaosT/HAP-NodeJS/blob/0840ce52cc8015dd75fb21c098bf38cf9611ea4a/lib/gen/HomeKitTypes.js#L114.

Do you know if the the new (with display) and old (without display) Eve Room are still using the custom characteristic? Eve tends to switch to standard characteristics, once they became available.

[tobekas]

Thanks a lot! It's working!
I'm using the custom AirParticulateDensity characteristic (E863F10B) in combination with the standard AirQuality characteristic. If I used the standard AirParticulateDensity instead, the history graph is not working anymore.

I have no real "Eve Room" and can't help. But most likely there will be differences. On some screenshots you can see that stars appear even in the Eve app instead of the quality terms.

[tobekas]

... and the units are different:
Custom: ppm (max. 5000)
Standard: µg/m^3 (max. 1000)

It is also surprising that the standard AirParticulateDensity is not an optional characteristic for service AirQualitySensor.

Anyway, this issue is solved. Thank you!