I just ordered a second rf controller to build this. Just to be sure: you only use the power supply that is connected to the wemos? So the battery in the rf controller is not needed right?
I think I will use esphome to flash the wemos. No coding required at all 
Correct, I use a NodeMCU, basically the same setup. ESPHome would indeed simplify this method even more
I also have a Buva Qstream (hygro version) which has inputs but not the 0-10V connection. Does anyone have an idea how to connect this to HomeAssistant. https://www.buva.nl/uploads/knowledge/q-stream-installatiehandleiding-2017-06.pdf
Hi everyone!
This is a slightly older Thread, but still relevant.
I have a Vaillant Recovair system and can control it via the Quobino. The Hardware part works well and the slider in the app (HA) now controls the ventilation.
Now the tricky partā¦
I want to have this automated based on sensor readings. My first attempt is to read humidity in the bedroom and have the ventilation automatically adjust within a certain range if certain thresholds are reached. Sadly I have no clue how to do this.
I managed to set up an automation that should increase the ābrightnessā of the Dimmer when the humidity exceeds 50% but I have no control over how much it increases or anything like that.
Also, so far it seems like the automation doesnāt trigger even if the value is reachedā¦
Any pointers?
Thanks!
Hi I recently started with ha and I found this. Did you do jou have a working system. I ordered everything and made the connection to the remote. I programed the wemos with Arduino. But no succes. I can see the board in my wifi netwerk but if I type the IP adres the I get no response. You say in your reply that you Program the wemos thru esphome is there any documentation how to do that or can you help me?
Hey folks, i know this is an old thread, but if anyone succeed, Iād love to understand how, because i am slightly stuck. To demonstrate i did my home work 
:
i went for the ESP8266 (Wemos D1 mini) route with PWM, based on this thread:
Aansturing Mechanische ventiatie via KNX RF - Duurzame energie en installaties - GoT
However, in contrast to @Antoine_Evertze, I have an even older version of the BUVA Q Stream, which has the 0-10v control input and 12v out (0.3amp):
However, while my Wemos is working fine. Its powered via USB and i have this PWM DC converter between the BUVA 0-10v and PWM ping on Wemos: PWM naar spanningsomzettermodule 0%-100% tot 0-10V voor PLC MCU Digitaal naar analoog signaal PWM verstelbare converter voedingsmodule - AliExpress 502
The PWM Converter is active, but the Wemos is not registering any RPM:
[20:51:43][D][sensor:093]: āFan RPMā: Sending state 0.00000 RPM with 2 decimals of accuracy
[20:51:44][D][pulse_counter:181]: āFan RPMā: Retrieved counter: 0.00 pulses/min
[20:51:44][D][sensor:093]: āFan RPMā: Sending state 0.00000 RPM with 2 decimals of accuracy
[20:51:45][D][pulse_counter:181]: āFan RPMā: Retrieved counter: 0.00 pulses/min
[20:51:43][D][sensor:093]: āFan RPMā: Sending state 0.00000 RPM with 2 decimals of accuracy
[20:51:44][D][pulse_counter:181]: āFan RPMā: Retrieved counter: 0.00 pulses/min
[20:51:44][D][sensor:093]: āFan RPMā: Sending state 0.00000 RPM with 2 decimals of accuracy
[20:51:45][D][pulse_counter:181]: āFan RPMā: Retrieved counter: 0.00 pulses/min
My ESPHome yaml: [esphome/ventilation.yaml at main Ā· henkkie055/esphome]](esphome/ventilation.yaml at a9dd5d9efb91da9f0194710466c698888f6424ce Ā· l1vb2/esphome Ā· GitHub)
Any suggestions?
For any future users: I didnt manage to find a solution and in the end reverted to leveraging a 0-10v Zigbee dimmer. Even the old Q-Stream boards have an extra 0-10v port, so you can still use HA to control your Q-STream
Iām currently facing this same issue and Iāve decided to approach it in a different way.
The communication between the BUVA controllers and the mechanical ventilation unit operates over radio frequencies. Using my Flipper Zero, I was able to confirm that the signal uses the 868 MHz band ā however, I havenāt been able to identify the exact frequency or decode the signal itself yet, so unfortunately I canāt clone it at this point.
Iāve been advised that an RTL-SDR dongle would allow me to analyze and reverse-engineer the RF signal. Once I have the RTL-SDR, I plan to capture and decode the signal, then clone it using my Flipper Zero.
These cloned signals will be stored on the Flipper and made accessible through Home Assistant. My end goal is to use a Shelly Wall Display X2 to control my mechanical ventilation system through Home Assistant by triggering the cloned RF signals.
