Xiaomi Mi Scale

Code to read weight measurements from Mi Body Composition Scale (aka Xiaomi Mi Scale V2)

Note: Framework is present to also read from Xiaomi Scale V1, although I do not own one to test so code has not been maintained

Getting the Mac Address of your Scale:

Retrieve the scale's MAC Address (you can identify your scale by looking for MIBCS entries) using this command:

$ sudo hcitool lescan
LE Scan ...
F8:04:33:AF:AB:A2 [TV] UE48JU6580
C4:D3:8C:12:4C:57 MIBCS
[...]

Note down your MIBCS mac address - we will need to use this as part of your configuration...

Setup & Configuration:

Running script with Docker:

Open docker-compose.yml and edit the environment to suit your configuration...
Stand up the container - docker-compose up -d

Running script directly on your host system:

Install python requirements (pip3 install -r requirements.txt)
Open wrapper.sh and configure your environment variables to suit your setup.
Add a cron-tab entry to wrapper like so:

*/5 * * * * bash /path/to/wrapper.sh

NOTE: It's best to schedule via crontab at most, every 5 min (so as not to drain the battery on your scale):

*/5 * * * * python3 /path-to-script/Xiaomi_Scale.py

Home-Assistant Setup:

Under the sensor block, enter as many blocks as users configured in your environment variables:

  - platform: mqtt
    name: "Example Name Weight"
    state_topic: "miScale/USERS_NAME/weight"
    value_template: "{{ value_json['Weight'] }}"
    unit_of_measurement: "kg"
    json_attributes_topic: "miScale/USERS_NAME/weight"
    icon: mdi:scale-bathroom

  - platform: mqtt
    name: "Example Name BMI"
    state_topic: "miScale/USERS_NAME/weight"
    value_template: "{{ value_json['BMI'] }}"
    icon: mdi:human-pregnant

Acknowledgements:

Thanks to @syssi (https://gist.github.com/syssi/4108a54877406dc231d95514e538bde9) and @prototux (https://github.com/wiecosystem/Bluetooth) for their initial code

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