Mi Flora in Homekit

Hi everyone,

I’ve managed to get the green chinese Mi Flora sensor working in HA and saw that this chap had his showing in HomeKit.

https://twitter.com/honcheng/status/941101238212485120?lang=en

He is using Homebridge, but surely it is possible to create a custom humidity sensor in HA with the data passed by the Mi Flora and populate that in HomeKit?

Has anyone had any success doing this?

Thanks!