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# Xiaomi Mi Scale Add On for Home Assistant
Add-On for [HomeAssistant ](https://www.home-assistant.io/ ) to read weight measurements from Xiaomi Body Scales.
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## BREAKING CHANGE:
Please note there was a breaking change in 0.1.8. The MQTT message json attributes are now in lower snake_case to be compliant with Home-Assistant Attributes.
This means Home-Assistant sensor configuration needs to be adjusted.
For example
`value_template: "{{ value_json['Weight'] }}"`
Needs to be replaced with
`value_template: "{{ value_json['weight'] }}"`
(note the lowercase `w` in `weight` )
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## Supported Scales:
Name | Model | Picture
--- | --- | :---:
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[Mi Smart Scale 2 ](https://www.mi.com/global/scale ) | XMTZCO1HM, XMTZC04HM | 
[Mi Body Composition Scale ](https://www.mi.com/global/mi-body-composition-scale/ ) | XMTZC02HM | 
[Mi Body Composition Scale 2 ](https://c.mi.com/thread-2289389-1-0.html ) | XMTZC05HM | 
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## Setup
1. Retrieve the scale's MAC Address from the Xiaomi Mi Fit App:
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2. Open Home Assistant and navigate to add-on store. Click on the 3 dots (top right) and select Repositories
3. Enter `https://github.com/lolouk44/hassio-addons` in the box and click on Add
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4. You should now see Lolouk44 Add-Ons at the bottom list:
5. Click on Xiaomi Mi Scale then click on Install
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6. Edit the Configuration
Option | Type | Required | Description
--- | --- | --- | ---
HCI_DEV | string | No | Bluetooth hci device to use. Defaults to hci0
MISCALE_MAC | string | Yes | Mac address of your scale
MQTT_PREFIX | string | No | MQTT Topic Prefix. Defaults to miscale
MQTT_HOST | string | Yes | MQTT Server (defaults to 127.0.0.1)
MQTT_USERNAME | string | No | Username for MQTT server (comment out if not required)
MQTT_PASSWORD | string | No | Password for MQTT (comment out if not required)
MQTT_PORT | int | No | Defaults to 1883
TIME_INTERVAL | int | No | Time in sec between each query to the scale, to allow other applications to use the Bluetooth module. Defaults to 30
MQTT_DISCOVERY | bool | No | MQTT Discovery for Home Assistant Defaults to true
MQTT_DISCOVERY_PREFIX | string | No | MQTT Discovery Prefix for Home Assistant. Defaults to homeassistant
Auto-gender selection/config -- This is used to create the calculations such as BMI, Water/Bone Mass etc...
Up to 3 users possible as long as weights do not overlap!
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Here is the logic used to assign a measured weight to a user:
```
if [measured value in kg] is greater than USER1_GT, assign it to USER1
else if [measured value in kg] is less than USER2_LT, assign it to USER2
else assign it to USER3 (e.g. USER2_LT < [measured value in kg] < USER1_GT )
```
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Option | Type | Required | Description
--- | --- | --- | ---
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USER1_GT | int | Yes | If the weight (in kg) is greater than this number, we'll assume that we're weighing User #1
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USER1_SEX | string | Yes | male / female
USER1_NAME | string | Yes | Name of the user
USER1_HEIGHT | int | Yes | Height (in cm) of the user
USER1_DOB | string | Yes | DOB (in yyyy-mm-dd format)
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USER2_LT | int | No | If the weight (in kg) is less than this number, we'll assume that we're weighing User #2 . Defaults to USER1_GT Value
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USER2_SEX | string | No | male / female. Defaults to female
USER2_NAME | string | No | Name of the user. Defaults to Serena
USER2_HEIGHT | int | No |Height (in cm) of the user. Defaults to 95
USER2_DOB | string | No | DOB (in yyyy-mm-dd format). Defaults to 1990-01-01
USER3_SEX | string | No | male / female. Defaults to female
USER3_NAME | string | No | Name of the user. Defaults to Missy
USER3_HEIGHT | int | No |Height (in cm) of the user. Defaults to 150
USER3_DOB | string | No | DOB (in yyyy-mm-dd format). Defaults to 1990-01-01
7. Start the add-on
## Home-Assistant Setup:
Under the `sensor` block, enter as many blocks as users configured in your environment variables:
```yaml
- platform: mqtt
name: "Example Name Weight"
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state_topic: "miscale/USER_NAME/weight"
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value_template: "{{ value_json['weight'] }}"
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unit_of_measurement: "kg"
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json_attributes_topic: "miscale/USER_NAME/weight"
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icon: mdi:scale-bathroom
- platform: mqtt
name: "Example Name BMI"
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state_topic: "miscale/USER_NAME/weight"
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value_template: "{{ value_json['bmi'] }}"
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icon: mdi:human-pregnant
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unit_of_measurement: "kg/m2"
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```
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## Acknowledgements:
Thanks to @syssi (https://gist.github.com/syssi/4108a54877406dc231d95514e538bde9) and @prototux (https://github.com/wiecosystem/Bluetooth) for their initial code
Special thanks to [@ned-kelly ](https://github.com/ned-kelly ) for his help turning a "simple" python script into a fully fledged docker container
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Thanks to [@bpaulin ](https://github.com/bpaulin ), [@AiiR42 ](https://github.com/AiiR42 ) for their PRs and collaboration
