Winix C545 Component

ESPHome
1

Hi there,

I recently whipped up a new component for the Winix C545 air purifier. It piggybacks on the OEM UART protocol and exposes fan controls and sensor readings.

The project, example configuration and write up is located here:

3 Likes
2

Any reason why you didn’t use the labeled tx and rx pins? I burned off the tx noted in your picture by accident so I can’t solder anything to it anymore…

3

The labeled TX and RX are test points for debug. Unfortunately they are not the same signals used for control.

4

Any chance of supporting the larger, newer, and arguably more popular Winix 5500-2 ?

5

I had another person email me asking the same. They provided photos of the boards on the 5500-2.

Unfortunately it’s a completely different beast. Since it’s not WiFi capable there’s no UART to hijack. Interfacing with ESPHome would be possible but it’d be a more “analog” approach of tying it into the buttons and status LEDs.