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I have a Midea duct HVAC that has only the option of wired thermostat remote and it's not smart.

I want to build something smart so I can turn on / off the AC or the heating remotely, but I don't know where to start from and if I can build something or it's something internal that only Midea can do it.

Here is the picture with the wires diagram enter image description here

The remote does not have any infrared. I don't know what is that infrared pipe of wires A and B.

The 5 wires are:

  • A-B = infrared pipe
  • C = +5v
  • D = GND
  • E = RUN

Model of the remote control: kjr-10b/dp(t)-5b

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    Sorry but there's just not enough info in your diagram. These are just assembly instructions, the manual tells nothing about the compatibility with devices which are not shipped with the HVAC. – Dmitry Grigoryev Jul 3 at 12:02
  • @DmitryGrigoryev I am thinking talking to Midea maybe they can provide some details. What info should I get from them in order to be able to create something custom? Also I have added the remote model to the question if helps. Thanks. – Daniel Dudas Jul 3 at 13:00
  • Maybe asking them for details will work. My point is, unless you know what you need to do electrically, asking on the RPi site will not bring you much. When you know that you must e.g. toggle RUN between 0 and 12V, you could ask how to do that. – Dmitry Grigoryev Jul 3 at 13:03

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