Setting temp on auto-mode

[patrickcollins12]

I've been looking at the Advanced documentation.

I have a BME280 temperature sensor in my room which seems a lot more accurate than the temperature sensor built into my daikin.

I'd like to publish the "current temperature" from this external device. Via home assistant I could set this up I guess.

I have 2 questions:
Using MQTT where do I publish the current temperature? I did publish to here command/faikinstudy/env but it gets overwritten by the air conditioner.

Should I add the BME280 temperature sensor directly to the Faikin unit for more accurate temperature readings and is there documentation on how to do that? I can solder if needed.

[revk]

You want command/faikinstudy/control with {"env":26.1} for example.

Or you could have the Faikin track the sensor directly if it can see it.

[patrickcollins12]

Boom. That worked out of the box thanks.

So I'd just solder the bme280 onto a spare gpio?

alias: Publish BME280 to Faikinstudy
description: ""
triggers:
  - trigger: state
    entity_id:
      - sensor.bme280_temperature
conditions: []
actions:
  - action: mqtt.publish
    metadata: {}
    data:
      evaluate_payload: false
      qos: 0
      retain: false
      topic: command/faikinstudy/control
      payload: "{\"env\": {{ states('sensor.bme280_temperature') }} }"

[patrickcollins12]

what do you think about attaching a sensor directly to the faikin? it would be easier for me than having yet another BLE or Wifi device. how hard would it be to expose a GPIO reading into your software?

This sensor is only $5 and could be mounted in a discrete place outside of the air conditioning head unit.

https://www.makerstore.com.au/product/mb-elc-sen-bme280/

[revk]

Looks an interesting sensor. The normal Faikin board does not expose enough GPIOs, but if you are using your own board. It would not be impossible to add an I2C feature. I'd probably want to play around with one of those for a bit first.

[patrickcollins12]

Or you could have the Faikin track the sensor directly if it can see it.

Or did you mean track an mqtt message?

[revk]

Sorry I meant if it is BLE. I did not check what the sensor was.

[patrickcollins12]

Ah I see. Like this: https://github.com/revk/ESP32-Faikin/blob/main/Manuals/BLE.md

[patrickcollins12]

My bme280 sensor is a raw temp sensor plugged into an esphome32 device I made. I guess it could expose ble too. I'll try it.

[revk]

Good luck.