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dlarrick / pykumo

Python library to interact with Mitsubishi KumoCloud devices via their local API
MIT License
35 stars 12 forks source link

Use without cloud service #33

Closed joshourisman closed 1 year ago

joshourisman commented 1 year ago

Sorry for misusing issues for this, but I didn’t see a better option.

Is a Kumo Cloud account actually necessary to control a unit locally? If I simply bought and installed the WiFi adapter for my unit, but didn’t set it up with the cloud service, would I be able to use Pykumo (and by extension, the Homebridge or Home Assisstant integrations) to control my Mitsubishi unit?

dlarrick commented 1 year ago

Cloud account is necessary for initial setup. There are credentials details ("password" and "cryptoSerial") used in talking to the device locally that are either generated by the service or algorithmically generated in some way that hasn't been reverse-engineered. Once you have these there's no reason to talk to the cloud service again. See what's done in pykumo-demo.py.

If you're using Home Assistant, if you enable the "prefer_cache" option on setup and your IP addresses don't change (highly recommended) it doesn't talk to the service again after that point.

The official app is also the only way (aside from begging your installer) to get into the "installer tools" to do things like set failover groups, min/max allowed setpoints, etc.

joshourisman commented 1 year ago

Ok, thought that might be the case. Thanks!

So I guess I have to decide if I want to pay for Kumo Cloud in order to get an installer out so I can do this, or if I want to try setting up a raspberry pi to control it directly…

cjkrolak commented 1 year ago

Ok, thought that might be the case. Thanks!

So I guess I have to decide if I want to pay for Kumo Cloud in order to get an installer out so I can do this, or if I want to try setting up a raspberry pi to control it directly…

Kumocloud doesn't cost anything, you can set it up yourself.

joshourisman commented 1 year ago

Oh! That's good to know. Their website definitely does not make that clear… Still have to pay for the hardware, though I guess that probably ends up not being too bad compared to rolling my own with a Raspberry Pi and reverse-engineered UART protocol…

cjkrolak commented 1 year ago

Plug n play wifi module is $150 to $200

joshourisman commented 1 year ago

Oh, sweet. And it sounds like I can just plug it in myself and set up the app? The iOS app seems to think I need a professional installer with a Mitsubishi-issues PIN to configure anything.

cjkrolak commented 1 year ago

the installer pin is 9999, it's documented in the installer manual.

joshourisman commented 1 year ago

Awesome, I guess they just really want you to think you need to hire an installer. Thanks for the help!

dlarrick commented 1 year ago

Closing this ~issue~ discussion.