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I added a non-wi-fi Mitsubishi AC to Home Assistant

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Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#51

Post by bluGill »

dwedge wrote: post #45
madaxe_again wrote: post #29

I did similar with our coffee machine a year ago - I was bored of getting home from the school run to a cold pot of coffee because the machine automatically turns off the hot plate after 30 minutes, and it seems there is no such thing as a WiFi connected drip coffee machine. Kettles, yes, coffee machines, no. Dead simple. Cracked it open, chucked an ESP32 in there connected to the soft power button, and to the “machi…

> Now, she opens her bedroom door, I get “kid is awake” alert on my phone, and the machine brews the coffee. Out of all of the smart home threads and articles I've read over the years this is the only sentence that made me wish I had it. It's genius

Until the kid uses the bathroom in the middle of the night and goes back to bed. Though the GP seems to not mind stale coffee so perhaps he won't care.

Exceptions like the above make automations hard.

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#52

Post by doug_life »

akifbayram wrote: post #2

I’ve been working on a similar setup using the M5Stack NanoC6 and AtomS3 Lite, and put together a parts list and wiring guide on my site: https://serin-labs.com/parts.html . I also built a web flasher with firmware configured for those boards, so you can install directly from your browser without any fiddling or configuring. The ESPHome option uses the same echavet/MitsubishiCN105ESPHome project mentioned in the arti…

Thanks. I’ve been looking for a clean ots solution and somehow managed to not come across your company yet. Just purchased pre-assembled module!

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#53

Post by wangxin199 »

akifbayram wrote: post #2

I’ve been working on a similar setup using the M5Stack NanoC6 and AtomS3 Lite, and put together a parts list and wiring guide on my site: https://serin-labs.com/parts.html . I also built a web flasher with firmware configured for those boards, so you can install directly from your browser without any fiddling or configuring. The ESPHome option uses the same echavet/MitsubishiCN105ESPHome project mentioned in the arti…

[flagged]

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#54

Post by kotaKat »

bluGill wrote: post #51
dwedge wrote: post #45

Earlier quoted context omitted.

> Now, she opens her bedroom door, I get “kid is awake” alert on my phone, and the machine brews the coffee. Out of all of the smart home threads and articles I've read over the years this is the only sentence that made me wish I had it. It's genius

Until the kid uses the bathroom in the middle of the night and goes back to bed. Though the GP seems to not mind stale coffee so perhaps he won't care. Exceptions like the above make automations hard.

DR stands for "didn't realize"; the first time it happens you just run back to the drawing board and add some safety boundaries on it.

So... just make sure the automation only becomes available from ~6 AM to 8 AM. ;)

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#55

Post by a012 »

This is kinda unrelated but I learned while researching for my new AC that there are two Mitsubishi brands/companies, one is Mitsubishi Electric and the other is Mitsubishi Heavy Industrial. And their ACs are not the same, so just saying Mitsubishi AC probably could lead to problem. The one OP has is Mitsubishi Electric by the first photo.

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#56

Post by akifbayram »

hanrelan wrote: post #32
akifbayram wrote: post #2

I’ve been working on a similar setup using the M5Stack NanoC6 and AtomS3 Lite, and put together a parts list and wiring guide on my site: https://serin-labs.com/parts.html . I also built a web flasher with firmware configured for those boards, so you can install directly from your browser without any fiddling or configuring. The ESPHome option uses the same echavet/MitsubishiCN105ESPHome project mentioned in the arti…

HN is awesome sometimes, I actually just installed 3 of your devices in my ACs to get them all wifi enabled. Worked perfectly, thank you! Is it possible to flash them from Google home firmware to esphome without USB? I might move away from Google home soon but I'd hate to have to reopen up my ACs again.

Awesome. I'm glad to hear that.

It's not possible to cross-flash a different firmware track over the air but since you're already using the Matter-compatible firmware, you can pair it directly with Home Assistant, fully local. It won't be as configurable as the ESPHome firmware, but it'll get you the controls you need.

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#57

Post by gruez »

bob1029 wrote: post #30
HeavenFox wrote: post #13

Earlier quoted context omitted.

FYI this kind of thermostat is actually better. American style thermostat put your HVAC system in either on or off state (basically PWM), whereas this kind of communicating thermostat can tell the system what the temperature is, so they adjust power accordingly. I do wish they have standardized protocol though.

Single stage hvac systems tend to have better performance in the max capacity cooling cases (Texas) and last significantly longer than units that rely on non-linear electronic devices. The difference can be as extreme as 10+ years of service life. There are residential systems that were installed in the 80s and 90s that are still running fine today. The hermetically sealed scroll compressor is an engineering marvel.…

>Single stage hvac systems tend to have better performance in the max capacity cooling cases (Texas) and last significantly longer than units that rely on non-linear electronic devices.

Why?

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#59

Post by bluGill »

gruez wrote: post #57
bob1029 wrote: post #30

Earlier quoted context omitted.

Single stage hvac systems tend to have better performance in the max capacity cooling cases (Texas) and last significantly longer than units that rely on non-linear electronic devices. The difference can be as extreme as 10+ years of service life. There are residential systems that were installed in the 80s and 90s that are still running fine today. The hermetically sealed scroll compressor is an engineering marvel.…

>Single stage hvac systems tend to have better performance in the max capacity cooling cases (Texas) and last significantly longer than units that rely on non-linear electronic devices. Why?

Because all too often the electronics are what fail and replacement parts are not available so the whole thing is scrap even though the compressor is still good.

Re: I added a non-wi-fi Mitsubishi AC to Home Assistant

#60

Post by bluGill »

deelayman wrote: post #35
HeavenFox wrote: post #13

Earlier quoted context omitted.

FYI this kind of thermostat is actually better. American style thermostat put your HVAC system in either on or off state (basically PWM), whereas this kind of communicating thermostat can tell the system what the temperature is, so they adjust power accordingly. I do wish they have standardized protocol though.

The thermostat is better only because it takes advantage of the inverter modulation capabilities in the heat pump. I don't have the sense that inverter modulation is the norm for most home ducted systems, even new builds in North America. I've only observed ductless systems like this in retrofitted, older homes in Canada. And at that point they're usually not integrated with the home's existing heating system / therm…

It is starting to happen in the US as well.
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