MHI-AC-Ctrl

Reads and writes data (e.g. power, mode, fan status etc.) from/to a Mitsubishi Heavy Industries (MHI) air conditioner (AC) via SPI controlled by MQTT (by absalom-muc)

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better MHI-AC-Ctrl alternative or higher similarity.

MHI-AC-Ctrl discussion

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MHI-AC-Ctrl reviews and mentions

Posts with mentions or reviews of MHI-AC-Ctrl. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-08-28.
  • Air Con: $1697 for an on/off switch
    10 projects | news.ycombinator.com | 28 Aug 2024
    The nice thing about my Mitsubishi Heavy Industry units is I've got a bunch of MHI-AC-Ctrl[1] modules tucked into them talking to the service interface with Home Assistant. The neat thing is it doesn't just control it, it also makes all the internal sensors and codes available.

    What I think we really need to do though is make publishing these control standards mandatory under right-to-repair laws - no one should need to be reverse engineering them, you bring a product to market you have to provide the complete spec for it's software interface and data.

    Do that, and I bet we'd find in a few years every new appliance would support a common serial port standard and come with a code page in the manual for it (ironically the prevalence of Tuya-smart stuff has come very close to making this happen, but they go to absurd lengths to lock you out of the wi-fi microcontrollers).

    [1] https://github.com/absalom-muc/MHI-AC-Ctrl

  • Home Assistant 2023.11
    11 projects | news.ycombinator.com | 2 Nov 2023
    Yep, I'm relatively new to Home Assistant but love it. Combined with ESPHome, I've got most of the lights in my house controlled (via switch changes, not smart bulbs), and my all my air conditioners via the MHI-AC-Ctrl project[1,2] (which is fantastic - ordered the boards from JLC-PCB, parts from Ali-Express, told ESPHome to program everything and plugged them into the ports and...it all just worked!).

    Just got a Mitsubishi Electric (which is different to MHI) and a Daikin at my parents house to get online - but code for both exists and I suspect the MHI boards can be reprogrammed to fulfill the role without any hardware changes.

    It's incredible that the future we wanted in like, 2010 can be had and had without selling your soul to the cloud: I can leave the house, and turn off all my lights and AC's while walking out the door, or get notified if I've left my garage open - without a single cloud provider dependency, all open-source.

    [1] https://github.com/absalom-muc/MHI-AC-Ctrl/

    [2] https://github.com/ginkage/MHI-AC-Ctrl-ESPHome

  • My mini splits run ESPhome now!
    5 projects | /r/homeautomation | 12 Jan 2023
    https://github.com/absalom-muc/MHI-AC-Ctrl Although Mitsubishi HI (heavy industries) is a different company to Mitsubishi so may not work
  • A note from our sponsor - SaaSHub
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    SaaSHub helps you find the best software and product alternatives Learn more →

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