air quality history

[thncode]

I am trying hard to add air quality (ppm) history with fakegato - but no luck yet. the accessory always reports "not data". is there anywhere a good example or where can I find the specific conditions for this? contactSensor and temp/humidity works for me, but not air quality. PLEASE HELP!

[simont77]

Did you add the custom Eve characteristic for air quality? You should emulate Eve Room (have a look at the wiki)

[simont77]

it's characteristic E863F10B-079E-48FF-8F27-9C2605A29F52

[thncode]

yes I did - this is within setUpServies:

this.fakeGatoHistoryService = new FakeGatoHistoryService("room", this, { storage: 'fs' });

var CustomCharacteristic = {};

CustomCharacteristic.AirQuality = function () {
    Characteristic.call(this, 'Air Quality PM25', 'E863F10B-079E-48FF-8F27-9C2605A29F52');
    this.setProps({
        format: Characteristic.Formats.UINT16,
        unit: "ppm",
        maxValue: 99999,
        minValue: 2,
        minStep: 1,
        perms: [Characteristic.Perms.READ, Characteristic.Perms.NOTIFY]
    });
    this.value = this.getDefaultValue();
};
CustomCharacteristic.AirQuality.uuid = 'E863F10B-079E-48FF-8F27-9C2605A29F52';
inherits(CustomCharacteristic.AirQuality, Characteristic);

CustomCharacteristic.EveAirQuality = function () {
    Characteristic.call(this, 'Eve Air Quality', 'E863F11B-079E-48FF-8F27-9C2605A29F52');
    this.setProps({
        format: Characteristic.Formats.FLOAT,
        unit: "ppm",
        maxValue: 5000,
        minValue: 0,
        minStep: 1,
        perms: [Characteristic.Perms.READ, Characteristic.Perms.NOTIFY]
    });
    this.value = this.getDefaultValue();
};
CustomCharacteristic.EveAirQuality.UUID = 'E863F11B-079E-48FF-8F27-9C2605A29F52';
inherits(CustomCharacteristic.EveAirQuality, Characteristic);

// AirQuality sensor
airQualitySensor = function (displayName, subtype) {
let uuid = UUIDGen.generate('airQualitySensor');
Service.call(this, displayName, uuid, subtype);

    this.addCharacteristic(Characteristic.AirQuality);
    this.addCharacteristic(CustomCharacteristic.EveAirQuality);
};
inherits(airQualitySensor, Service);
//airQualitySensor.UUID = uuid;

this.airQualityService = new Service.AirQualitySensor('Luftqualität');

this.airQualityService.getCharacteristic(Characteristic.StatusLowBattery)
.on('get', this.getStatusLowBattery.bind(this));
this.airQualityService.getCharacteristic(Characteristic.StatusActive)
.on('get', this.getStatusActive.bind(this));

this.airQualityService
.setCharacteristic(Characteristic.AirParticulateSize, '2.5um');

this.airQualityService.getCharacteristic(Characteristic.AirQuality)
.on('get', this.getAirQuality.bind(this));
this.airQualityService.getCharacteristic(CustomCharacteristic.EveAirQuality)
.on('get', this.getEveAirQuality.bind(this));
this.airQualityService.getCharacteristic(Characteristic.PM2_5Density)
.on('get', this.getPM2_5Density.bind(this));
this.airQualityService.getCharacteristic(Characteristic.PM10Density)
.on('get', this.getPM10Density.bind(this));

[simont77]

did you try adding all 3 services to the accessory (temperature, humidity, airquality)? Also, add the E863F132-079E-48FF-8F27-9C2605A29F52 characteristic to the airquality service. The idea is to replicate as much as possible the Eve structure.

[simont77]

Check your UUID: EveQualityPPM is E863F10B, but you are adding to your accessory E863F11B

[simont77]

Try opening this with HomekitAccessorySimulator and copy the structure.

FakeRoom.hasaccessory.zip

[thncode]

I am one big step further: I am getting a history but no graphics. All history entries do say "UNKNOWN (xx ppm) - where is the quality assignment to measurement readings coming from???

[simont77]

Try to remove the history from Eve deleting all the entries for temp, hum, and ppm. Can you post an image of what you see in the history?

[thncode]

[simont77]

Have you tried with some higher value? A real Eve room upon reset starts from 450ppm, and it's already Excellent. Maybe 450 is the floor.

[thncode]

yes you are right. I mixed up ug/m3 (which my device is measuring) with PPM - my only problem now (and this is not fakegato related) is that I cannot find a conversion for those units...

[simont77]

I don't know if there is direct conversion. Eve Room measures VOC (this is the sensor https://ams.com/documents/20143/36005/AS-MLV-P2_FS000137_2-00.pdf), and they are only expressed in ppm, while from what I see you are measuring particulate.

[simont77]

Is it ok now? can I close the issue?

[thncode]

THX - works now!