Xiaomi PM2.5 sensor about miio HOT 24 CLOSED

I actually received one of those a few days ago. Haven't had the chance to do anything special with it though. But support for it is definitely coming. Hopefully it will be in the next few weeks.

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Ok great ! that just a sensor reader, maybe you can read sensor value and batterie, but nothing special to do with this.

Count on me to test it

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made some test:

he allow auto token :

Device ID: 47584928
Model info: Unknown
Address: 192.168.0.xxx
Token: 90a5db2xxxxfd56a13beed58611dc8bc via auto-token

But no way to get packet from bluestack and Wireshark on my side.

from miio.

FYI

pi@raspberrypi:~ $ miio --inspect 47584928
 INFO  Attempting to inspect 47584928

Device ID: 47584928
Model info: zhimi.airmonitor.v1 (generic)
Address: 192.168.0.xxx
Token: 90a5db2af60fd56a13bxxx58611dc8bc via auto-token
Support: At least basic

Firmware version: 1.2.9_8030
Hardware version: MW300

WiFi: myssid (14:0C:76:FB:xx:xx) RSSI: -66
WiFi firmware version: SD878x-14.76.36.p84-702.1.0-WM

Remote access (Mi Home App): UDP

from miio.

So your token is 90a5db2af60fd56a13beed58611dc8bc for device 47584928. you censored different sections each time.

from miio.

@Bluebie don't know if token is security sensible or not...

from miio.

Is there any progress yet?

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I figure out use below command will get some result,
miio --control 192.168.xxx.xxx --method get_prop --params '["aqi","power","battery","usb_state"]'

INFO Attempting to control 192.168.xxx.xxx

INFO Got result:
[
34,
"on",
0,
"on"
]

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@hamwong Thanks man, tried it and it works. Have you managed to find power on/off call? Since i would like to power it on and off via sw (domoticz). I have realized when you power it off via physical button, wifi is still on (pingable), and device sends last param result.

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no I didn't, in fact I leave it open 24 hours and track the result in grafana

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I have this device too and have been triying to configure it trough the commandline interface since it's not supported on my current region in the app.

The miiio --discover command won't show it on the list even if connected to the configuration access point the device has.

I have found it's network address and tried configuring it as follows: miio --configure 192.168.13.1 --ssid [removed] --passwd [removed]

192.168.13.1 is the device address within the wifi network.
192.168.13.2 is the ip the sensor assigns to you via dhcp.

i'm out of ideas on this subject, is it possible than this library is not capable of configuring uninitialized devices (resetted)? If so it's a shame you need to depend on the app to initialize the devices, specially since it has region restrictions and i would like to fully get rid of it.

I'm a programmer and i would like to help on anything i can, since this library seems pretty useful.

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@animalillo I am not sure you can use miio lib to setup device. In the mi home app you should change region to mainland china so you can add device (later you can change it back). Then use miio lib to control device. I am trying to add PM 2.5 detector to Domoticz for better logs and further automation. Trying to find a way to turn it on/off (well it's more like standby on off) via miio.

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So far with the tests i've been able to perform i have not been able to setup the device to connect to the wifi network and work.

I have tried to set the device to model: 'zhimi.airpurifier.m1' and i can turn it on and off, also with device.on('propertyChanged', e => console.log(e.property, e.oldValue, e.value)); i get the useTime value, nothing more from it so far, setting it up from the app is really annoying as i have to set up the air purifier i have on the app all over again by resetting it and the app does not allow to add the device on my region only the purifier .

Also i've noticed this thing displays some date and time, i guess that from mainland china, would be nice to change that to my current datetime.

Any ideas on how to help to add this features and get the sensor value?

from miio.

Oh i have noticed that the value of aqi changes, I'm too tired at this time and didn't notice it hadn't changed from the sensor. Sorry for that.

So you can get the aqi value just as if from the air purifier.

Only thing left would be to be able to set the date and time i think? Does this thing has more capabilities? Maybe synchronize it with the air purifier as the app allows but idk about how that part would work.

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@animalillo thats why i am saying change region in mi home app temporary just to add device to your wifi network. As for time/clock, yeah i noticed it's in chinese time zone, but i do not intend to use it as a clock anyways, so i ain't bothered to find a way to fix it.

aqi value as hamwong discovered via miio is miio --control 192.168.xxx.xxx --method get_prop --params '["aqi"]'

you can also pull additional parameter values from it "power", "battery" and "usb_state"

from miio.

Weird, i have upgraded firmware on it (via mi home app), now when i turn it off via physical button, it's not alive anymore (no ping reply) as it was before. Damn, now there is no option to turn it on again remotely. I guess i now have to find a way to downgrade firmware or leave it as always on device.

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I have upgraded firmware too and it allows control via software if you turn it off and then on again trough software (hadn't tried hardware key)

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really? I can't turn it off via sw. Eg. if device is on, i can turn it off with cmd:

miio --control 192.168.0.xxx --method set_power --params '["off"]'

what cmd you use to turn it on? How can you turn it on when it's not connected to wifi?

miio --control 192.168.0.xxx --method set_power --params '["on"]' doesn't works

to what fw version you have upgraded? I am on 1.2.9_8038

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My bad, i have unplugged by accident usb power cable. If the usb power is on, device is till active even when turned off on physical button, when it's off while on battey you can't turn it on via sw.

Do you use it in domoticz or some other sw?

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Can someone help. I use miio --control 192.168.1.10 --method get_prop --params '["aqi"]'

Returns: (node:3268) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection Id: 1): SyntaxError: Unexpected token ' in JSON at position 0

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@gharland you use PM 2.5 detector standalone or Xiaomi Purifier 2 pro? Purifier uses tokens, while standalone detector doesn't (as i know).

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It is the standalone. I have written a script instead which works (sorry, first attempt at node.js). This will give a reading every ~30 seconds, anyone know how to give more frequent readings?

const miio = require('miio');
const moment = require('moment');
const fs = require('fs');
const logger = fs.createWriteStream('log.txt', { flags: 'a' });
const devices = miio.devices({ cacheTime: 30 });
devices.on('available', reg => {
    const device = reg.device;
    if (!device) {
        console.log(reg.id, 'could not connect');
        return;
    }
    if (device.model == 'zhimi.airmonitor.v1') {
        console.log('Connected to pm2.5 monitor device at', device.address);
        device.defineProperty('aqi');
        device.on('propertyChanged', e => {
            var output = moment().format('YYYYMMDD hh:mm:ss,') + e.value + ',';
            console.log(output);
            logger.write(output + "\r\n");
        });
        device.monitor();
    }
});

from miio.

Nevermind, for anyone else who would like to know it's device.monitor([polling interval in milliseconds]);. The listener will trigger if oldValue != newValue.

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Proper support for the air monitor is available since 0.15.0. Please note that 0.15.0 has a lot of API changes so code written for 0.14.0 will not work without rewrites.

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