I agree to Sundberg84
I'm a happy user, Domotics have a large community and most what you need, someone already have spend some time with it, to make it work one way or another...

@moskovskiy82
I took 5v from the heatpump, mine is an IVT, I took it from the Ir receive, soldered 2wires, one GND and on for 5V and drilled a hole on the plastic casing, and then I had power for the Wemos D1 Mini Pro module.
Then 100 Ohm resister in series with the Irda LED 940nm Ir LED, connected to GPio16/D0 on the Wemos module.

Downlaod the ESPEASYT files + download Tonis heatpump /P115 lib and put it in same Arduino IDE, compile it all together

http://www.domoticz.com/wiki/AC_/_heatpumpIR

@gohan
Please use the github for heatpump to ask you question, as I assume that Toni mostly is checking that. It seems that there 2 different Daikin heatpumps supported

https://github.com/ToniA/arduino-heatpumpir

@moskovskiy82
hi, I'm not using the MQTT with mysensors
I think you should direct your questions to a HomeAssistant forum.
My setup uses Wemos D1 Mini Pro and Domoticz

I have at some point also been using a ping with sr-hc04, I dont have the actual code here, but as I remember, I ping until i get 3 results in a row which are identical. Instead of ping 3 times and make an average.

@markcame

Hi you should provide your heatpump info to Toni at the below link. check manufacturer + model + relevant data from your remote control and also your protocol info. then other persons using your heatpump can benefit from your work

https://github.com/ToniA/arduino-heatpumpir

PS. I am for my heatpump not using arduino/mysensors, as it was actually much easier to use/integrate Wemos D1 Pro mini + ESPEASy + P_115 heatpumpir into my Domoticz.
https://www.domoticz.com/wiki/AC_/_heatpumpIR#Check_heatpumpIR

@scalz said in Your workshop :

corexy

I think many guys envy your 2 lab:-)

I also vote for Wemos D1 Mini Pro
But I have no intention to use those for battery operation, As the other guys states, only option for low power battery operation is Arduino+ NRF24L01+
Actually a fairly little nice device:
https://www.wemos.cc/product/d1-mini-pro.html

@enlo
I would assume to drill a hole in the metal chimney that is between the wood boiler and the brick chimney.
then depending of the K-type thermocouple
then there is a nut so you can secure this like this:
https://www.aliexpress.com/item/Newest-High-Temperature-100-To-1250-Degree-Thermocouple-K-Type-100mm-Stainless-Steel-Probe-Sensors/32786956791.html?spm=2114.40010308.4.1.LxioyK

Or else you can sealed with special heat resistant seal:
https://www.amazon.co.uk/Heat-Resistant-Sealant-1250-300ml/dp/B0046450C4

Newest High Temperature 400 Degree Thermocouple K Type 100mm Stainless Steel Probe Sensors

$2.96

Heat Resistant Sealant 1250 C - 300ml

£5.08

6 available

@korttoma
Glad that you found the rootcause + published your analysis