I have a multisplit unit with four indoor units, made some years ago and it hasn't option to mount any WiFi kit.
But I would like to control each indoor unit within Home Assistant.
My goal is to use a Wemos D1 Mini with Tasmota firmware with IR transmitter to control them. The problem is that the hub can't know the actual state of the units if controlled by their remote controllers.
So I googled a bit and found the electric schema of the unit and I had an idea. Can I attach my esp8266 to the pins of the onboard IR receiver of the unit?
I attached the block diagram and electric data of the receiver and my hypothetical circuit where in black is the actual circuit and in red is my circuit.
I'm asking help because I'm mainly a software developer. Can it work? I don't know if it is needed the diode and I added a transistor to avoid loopback when my unit is transmitting.
The transistor is normally conducting so the esp8266 is always listening for incoming IR codes but if receive a command to be transmitted it close the input line, transmit the code then reopen the input line.
I'll saved the IR codes from remote controller using another tasmota device with IR receiver.
What do you think?
But I would like to control each indoor unit within Home Assistant.
My goal is to use a Wemos D1 Mini with Tasmota firmware with IR transmitter to control them. The problem is that the hub can't know the actual state of the units if controlled by their remote controllers.
So I googled a bit and found the electric schema of the unit and I had an idea. Can I attach my esp8266 to the pins of the onboard IR receiver of the unit?
I attached the block diagram and electric data of the receiver and my hypothetical circuit where in black is the actual circuit and in red is my circuit.
I'm asking help because I'm mainly a software developer. Can it work? I don't know if it is needed the diode and I added a transistor to avoid loopback when my unit is transmitting.
The transistor is normally conducting so the esp8266 is always listening for incoming IR codes but if receive a command to be transmitted it close the input line, transmit the code then reopen the input line.
I'll saved the IR codes from remote controller using another tasmota device with IR receiver.
What do you think?
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