I will start to create a binding for the Electrolux Pure A9 air purifier.
I have looked into this Homebridge implementation and also reversed engineered using the mitmproxy.
I currently have a Python PoC implementation running and the only issue is that you need to find your own client secret to be able to create a token, that can be done using mitmproxy. I will add instructions for how you do that in the README. The client secret will be a configuration item for the binding together with your registered username and password.
I will keep you updated of the work in this thread.