this post was submitted on 25 Oct 2023
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Home Automation
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Home automation is the residential extension of building automation.
It is automation of the home, housework or household activity.
Home automation may include centralized control of lighting, HVAC (heating, ventilation and air conditioning), appliances, security locks of gates and doors and other systems, to provide improved convenience, comfort, energy efficiency and security.
Warning: Working with electricity can result in injury, property damage, or even death if it is not done properly. Please keep this in mind while assisting others. If you are not sure about what you are doing, hire a licensed professional.
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If you feel like taking on a project I’d say go with making your own adapters and bring it into something like home assistant https://github.com/SwiCago/HeatPump cost me around $150 to get these set up for my 8 splits.
Working on this myself at the moment.
Mitsubishi2mqtt and Esphome-mitsubishiheatpump are what I am trying with Home Assistant . Leaning toward the esphome integration.
Op should checkout Hacking a Mitsubishi heat pump for more details but be warned that the latest Wemos D1 Mini's don't seem to communicate with the Mitsubishi (at least I couldn't get them to).
Have some esp01s coming which I hope will work.
Actually that was my route. I learned the hard way that the D1 minis don’t work lol
The D1 minis or any esp8266 based device will work, you just need to use a bidirectional logic level converter. The units communicate on 5v levels and all esp based devices use 3.3v levels. Some ESP devices might be more tolerant of using 5v on their GPIO pins but none of them really support it.
I went this way, as well (though I didn't spend anywhere near $150 - it came to under $5 per mini-split ordered from AliExpress, plus $11.50 for the programming tool from Amazon [including shipping and taxes]). It works really well. I can even use the remotes, if I want to, but the remote won't be updated with the state of the mini-split if I use Home Assistant to adjust settings. Home Assistant will get an update of the state of the mini-split if I adjust settings via the remote.
More accurately, I'm using this repo that supports ESPHome and Home Assistant.
The only issue I have is it doesn't seem to let me control the horizontal vane, but I may have an issue with the config somewhere.
Well I didn’t have any of the required tools at all and to be honest that $150 probably includes some of the wrong pieces that I ordered lol and never returned lol
You might also need to add the additional fan speed options. My testing showed I was missing "diffuse" and "middle". You can figure it out by seeing what the esp logs show when you set the fan speed of the remote to each level.
You could try doing the same with the horizontal vane, I haven't tested that yet.
I hadn't tried checking the logs while using the remote. Thanks for the suggestion. Unfortunately, when I press "Wide Vane" on my remote, I don't get an update in the logs about it. I do see updates when I change the mode or fan speed, as well as the vertical swing setting.