twtran

Currently not being able to receive email on any of my aliases. There's also no indication emails do not reach their destination (no bounced emails so far). Very curios if the email will ultimately be delivered after a resolution is found.

Not an ideal situation.

The project has a page about "wiring" [1] which also has a table with the needed parts to make your own cable (that's what I ended up doing).

In my case it was more hassle to look up how to dismantle the unit to get to the motherboard (I recommend looking up your unit's service manual), attaching the module and routing the cable are trivial.

[1] https://github.com/revk/ESP32-Faikin/wiki/Wiring

My experience is strictly with Daikin Stylish units bought a few months ago in the EU. They still have both the S21 port and a compartment for an external WiFi module, and for all intents and purposes it's plug and play. Their standard WiFi module is built in the internal unit motherboard AFAICT, and it only works with their Daikin Onecta platform (no local API whatsoever).

This project has been a godsent! The latest Daikin indoor units have a built-in WiFi module which only allows control through their cloud infrastructure. Besides it being a privacy and/or security issue, it's very slow and buggy (e.g. I've had two units reset their credentials after a power outage).

There are two caveats to going the Faikin way: you need to source or build your own cable that's compatible with your unit, and there's no access control (that I could find) for the web interface so you need to firewall and proxy it properly.