just a proof of concept and scripts backup for playing with my Dyson Pure Cool Link
to setup the Dyson, you have first to connect on its own Wi-Fi APi. The Fan will broadcast on Bonjour a service of type _dyson_mqtt._tcp listening on port 1883 (and in my case on address 192.168.1.1). You have to init the fan by sending SSID and passphrase of your local Wi-Fi. after than you can ask the dyson do disable its AP and it will connect to your local Wi-Fi. From this point, the fan will try to connect to Dyson/Amazon server to send data.
some trial in Dyson-init.py
took some example from http://aakira.hatenablog.com/entry/2016/08/12/012654
After this initialization, you'll have to use the hashed password to connect to the fan. The hashed password is a base64 encoded of the sha512 of the password written on manual and on the fan label
Using a modified version of irvined1982/MQTT2RRD as this one expect one sensor value per topic. Here the Dyson send a json with several sensor or state packed altogether the script now use paho and python 3
mqtt2rrd.py with mqtt2rrd.conf.example
that will create a lot of rrd files
If not doing anything, the Fan does not send data to subscriber, you need to publish some command at fixed interval (here every 30 seconds as the pure link app does)
I'm currently using Dyson-requester.py in a screen
to create graph, I'm using rrd.cgi
http://haroon.sis.utoronto.ca/rrd/scripts/
with the conf rrd.cfg
some graphs can be removed as they are redundant
| name | meaning | possible values |
|---|---|---|
| ercd | ? | NONE , or some hexa values |
| filf | Filter life remaining (hour) | 0000 - 4300 |
| fmod | Mode | FAN , AUTO |
| fnsp | Fan speed | 0001 - 0010, AUTO |
| fnst | Fan Status | ON , OFF |
| nmod | Night mode | ON , OFF |
| oson | Oscillation | ON , OFF |
| qtar | Air Quality target | 0001 , 0003... |
| rhtm | Collect Data ? | OFF... |
| wacd | ? | NONE... |
| name | meaning | possible values |
|---|---|---|
| dstv | ? | 0001... |
| srsc | ? | 7c68... |
| tzid | timezone? | 0001... |
| name | meaning | possible values |
|---|---|---|
| hact | Humidity (%) | 0000 - 0100 |
| pact | Dust | 0000 - 0009 |
| sltm | Sleep Timer | OFF... 9999 |
| tact | Temperature in Kelvin | 0000 - 5000 |
| vact | volatil organic compounds | 0001 - 0009 |
Redundent values ?
| name | meaning | possible values |
|---|---|---|
| pal0 - pal9 | number of second spend in this level of dust since the begining of hour | 0000 - 3600 |
| palm | seems to be a median value of palX | |
| vol0 - vol9 | number of second spend in this level of voc since the begining of hour | 0000 - 3600 |
| volm | seems to be a median value of volX | |
| aql0 - aql9 | number of second spend in this level of air quality | max (pal, vol)) since the begining of hour |
| aqlm | seems to be a median value of aqlX | |
| fafs | seems to be a number of seconds spend in a specific time | 0000 - 3600 |
| faos | seems to be a number of seconds spend in a specific time | 0000 - 3600 |
| fofs | seems to be a number of seconds spend in a specific time | 0000 - 3600 |
| fons | seems to be a number of seconds spend in a specific time | 0000 - 3600 |
| humm | humidity ? (%) | 0000 - 0100 |
| tmpm | temperature in kelvin ? | 0000 - 5000 |