Product: Faikout®: HA/WiFi/Ethernet Daikin controller 577 sold

Exactly as advertised

Shipped and received in about a week (as advertised). 3D printed case quality was better than expected, smooth finish. 2 pieces to click together, fits well. The module itself works well with home assistant and straight forward to set up.

Product: Faikout®: HA/WiFi/Ethernet Daikin controller 577 sold

Fixes Daikin's bad WiFi solution

This board fixes WIFI for Daikin ACs. Daikin ACs are really great with respect to cooling, but the WIFI solution (which was integrated with my AC) absolutely sucks:
You have to give your Daikin AC access to your WIFI, register with the Daikin cloud services, register your device in your account, and then have that device phone home, so that you can control it via a smartphone app. You do not have the option of local (i.e. non-cloud) control with Daikin's WIFI module. You also do not have the option of integrating it into your local building control (i.e. home assistant).
After plugging in the board into the S21 port on the AC, it just boots up and runs. You setup the WIFI, and then you can open a web UI running on the device, and control all features of the AC, locally. No cloud required. It also comes with MQTT support, so you can integrate it trivially into your local building control (like home assistant). It's absolutely refreshing to have something "just work".
One thing I did have a little trouble with: I purchased the board with the preconfigured 5-pin cable. While it did fit perfectly on the board end, it did not fit the AC side S21 port. I actually had to change the AC side connector to a smaller one, and even then I had to grind down the plug to get it to fit. I do not know if Daikin ACs come with different size S21 ports depending on the specific device. However, the S21 port on the Daikin Perfera floor unit is too small to take the sold cable here... requires some customization to get that to work. I changed the AC side connector, and even had to grind it down in size after.