Hey Habr! I decided to participate in the testing of products from the Dajet assortment again, and here you have a story about the Honeywell HAQ air quality monitor.
The device package includes: a package, a box, instructions, the device itself, shock absorbers for transportation, a Micro USB cable (it’s not clear why it is, not Type-C, after all).
First of all, my hands itched to drive the device through lsusb, and nothing. It can only be powered from USB. But with the "computer of the upper level", as the classics say, it can be connected. Only differently.
View from two sides:
Also, “class 1 laser product” is not an incandescent lamp for you, as in .
After charging from a power supply unit with a load capacity of at least 1 A, the device operates from a built-in battery. At the same time, a very quiet fan constantly rotates in it. There is nothing to cool inside, but the sensors work more efficiently if air is forced through them.
The display of the device organically combines two technologies: one from the beginning of the 331s - PMOLED (it flickers strongly, but the viewing angle is huge), the other is modern: a capacitive sensor (most likely not a matrix sensor, but from areas in those places on the screen, touches to which must be detected). When shooting, flicker is imperceptible. Above the display is a two-crystal LED (like ALSXNUMXA).
Six measured parameters are divided into two screens, between which you can switch by pressing the flashing "turn signals". On each of the screens, you can click on the parameter icon and its value will be displayed.
Particulate matter less than 2,5 microns in diameter:
Formaldehyde:
Temperature, below in small print - humidity:
Carbon dioxide:
Volatile organic compounds:
The generalized value, about it - further:
If any of the values takes on an undesirable value, the corresponding icon flashes. If the user is idle for a long time (he does not press either the top button or the screen), the selected value is displayed in a more concise form:
In this mode, when an exclamation mark appears in a circle at the bottom, you can press the top button and see which of the icons blinks.
We turn to the most interesting - pairing with a mobile device. We will install an application for Android or iOS. To do this, scan the QR code on the back of the box, or simply find a program called Honeywell IAQ (the device is HAQ, and the application is IAQ).
Application welcome screen:
Date:
Password setting:
Login with username and password:
Add a device - click on the plus:
Next, you need to do what is shown in the following screenshot:
The device will become an access point, but there is no point in connecting to it and trying to go to 192.168.0.1 or 192.168.1.1. You need to go to the next screen:
From an access point, the device will turn into a slave and connect to your router (2,4 GHz only). Now the smartphone or tablet communicates with it via the cloud, and the application will continue to work when connected via a cellular network or other access point. If the manufacturer ever stops supporting the device as obsolete, nothing terrible will happen - it will not stop displaying parameters on the built-in display, it will simply no longer be so “sociable”.
After pairing, the WiFi icon looks like this:
It seems that the connection is established, but the data does not go. What's happened?
Force quit the application and start again. Happened:
The graphs are still empty - the device did not work for long:
Click here on the question mark next to the name of the parameter, you can learn more about it:
A small glitch: you can’t leave this screen with the “back” button. You have to restart the application again.
There are a lot of settings:
I really liked the ability to independently set the thresholds for switching colors of a two-crystal LED:
The display brightness is not adjustable, so if it interferes at night, you can set the time interval during which it will be turned off:
The device can be used as an alarm clock:
Just do not turn off the router at night in this case:
Another feature is a stylish watch:
It looks like this:
The application includes instructions, and in it, in particular, a list of types of measured quantities:
And their measurement ranges:
And a separate screen is dedicated to the story of what kind of generalized value it is:
Any competent blogger can still participate in testing products from the range of Dajet. With the Honey promo code, you can purchase a device with a 10% discount by going to .
Source: habr.com