Finished adding wifi direct control to all my ac, not relying on ir this time.
All you need is esp8266 with some jst cable & connect to port on your ac pcb (check your diagram)
You can add this to your homebridge and ha. Total cost is around rm12-14 per ac

Daikin (cn_wir port)

Jst cable 2.0
https://my.shp.ee/ZYRNff2

Faikin
https://github.com/Sonic-Amiga/ESP8266-Faikin

Wiring - cn_wir port specifically because it’s scattered in the github repo. If yours is built in wifi module model just remove that cable from the port.


Mitsubishi Electric (cn105 port)

PAP jst cable
https://my.shp.ee/vwE85Ut

Mitsubishi2mqtt
https://github.com/dzungpv/mitsubishi2MQTT

For tuya, you can order this module from thailand
https://shopee.co.th/product/27525505
And that’s it, should save you 500 from sensibo or other devices. Obviously daikin has their own app, but not exactly open source. And mitsubishi electric has kumo cloud but they don’t exactly use it here. For other brands, you can just google it, i noticed panasonic, midea, haier has non cloud esp solution.

More details here

https://isaiahchia.com/tag/cn105/

If you need to sort out the correct color cable for each pin, you can use tweezer, pry the tab slightly and pull the cable

Can get the cheaper one from littlecraft shop
There’s the wemos d1 mini if you need smaller one

Can get the cheaper one from littlecraft shop
There’s the wemos d1 mini if you need smaller one

why not esp32?