Finally I got my Xiaomi bundle to play around with! 
After some trouble (MiHome registration didn’t want to send the registration emai to my personal email - gmail.com worked at first try), I could add the Xiaomi Gateway v3 to my App (after setting my location to China Mainland in the MiHome App).
But, I’m struggling getting the gateway live as a Thing. After installing the binding-mihome, there were no discovered Things. So I filled out my xiaomi.things:
Bridge mihome:bridge:rossbuehel "Xiaomi Gateway" [ serialNumber="f0b429XXXXXX", ipAddress="192.168.xx.xx", port=9898, key="XXX", pollingInterval=6000 ] {
Thing mihome:gateway:rossbuehel "Xiaomi Mi Smart Home Gateway" [itemId="f0b429XXXXXX"]
Thing mihome:sensor_weather_v1:158d00011234 "Xiaomi Temperature Sensor" [itemId="158d00011234 "]
Thing mihome:sensor_motion_aq2:158d00012344 "Xiaomi Motion Sensor" [itemId="158d00012344 "]
Thing mihome:sensor_switch:158d0001324234 "Xiaomi Mi Wireless Switch" [itemId="158d0001324234 "]
Thing mihome:smoke:158d0001234234 "Xiaomi Smoke Detector" [itemID="158d0001234234 "]
// Thing mihome:sensor_ht:158d0001XXXXXX "Xiaomi Temperature Sensor" [itemId="158d0001XXXXXX"]
// Thing mihome:sensor_motion:158d0001XXXXXX "Xiaomi Motion Sensor" [itemId="158d0001XXXXXX"]
// Thing mihome:86sw2:158d0001XXXXXX "Aqara Wireless Wall Switch" [itemId="158d0001XXXXXX"]
// Thing mihome:sensor_plug:158d0001XXXXXX "Xiaomi Plug" [itemId="158d0001XXXXXX"]
// Thing mihome:sensor_magnet:158d0001XXXXXX "Xiaomi Door Sensor" [itemId="158d0001XXXXXX"]
}
So - every sensor attached to the gateway in the App was found - but I can’t get to see the serial number of the gateway itself somewhere… is there a way to get it?
