# 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.

## 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`)

## Supported Scales:
Name | Model | Picture
--- | --- | :---:
[Mi Smart Scale 2](https://www.mi.com/global/scale)                                                                                               | XMTZCO1HM, XMTZC04HM | ![Mi Scale_2](https://raw.githubusercontent.com/lolouk44/xiaomi_mi_scale/master/Screenshots/Mi_Smart_Scale_2_Thumb.png)
[Mi Body Composition Scale](https://www.mi.com/global/mi-body-composition-scale/) | XMTZC02HM | ![Mi Scale](https://raw.githubusercontent.com/lolouk44/xiaomi_mi_scale/master/Screenshots/Mi_Body_Composition_Scale_Thumb.png)
[Mi Body Composition Scale 2](https://c.mi.com/thread-2289389-1-0.html) | XMTZC05HM | ![Mi Body Composition Scale 2](https://raw.githubusercontent.com/lolouk44/xiaomi_mi_scale/master/Screenshots/Mi_Body_Composition_Scale_2_Thumb.png)


## Setup

1. Retrieve the scale's MAC Address from the Xiaomi Mi Fit App:

![MAC Address](https://raw.githubusercontent.com/lolouk44/xiaomi_mi_scale/master/Screenshots/MAC_Address.png)

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
4. You should now see Lolouk44 Add-Ons at the bottom list:
5. Click on Xiaomi Mi Scale then click on Install
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!

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)
```

Option | Type | Required | Description
--- | --- | --- | ---
USER1_GT | int | Yes | If the weight (in kg) is greater than this number, we'll assume that we're weighing User #1
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)
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
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"
    state_topic: "miscale/USER_NAME/weight"
    value_template: "{{ value_json['weight'] }}"
    unit_of_measurement: "kg"
    json_attributes_topic: "miscale/USER_NAME/weight"
    icon: mdi:scale-bathroom

  - platform: mqtt
    name: "Example Name BMI"
    state_topic: "miscale/USER_NAME/weight"
    value_template: "{{ value_json['bmi'] }}"
    icon: mdi:human-pregnant
    unit_of_measurement: "kg/m2"

```

![Mi Scale](https://raw.githubusercontent.com/lolouk44/xiaomi_mi_scale/master/Screenshots/HA_Lovelace_Card.png)

![Mi Scale](https://raw.githubusercontent.com/lolouk44/xiaomi_mi_scale/master/Screenshots/HA_Lovelace_Card_Details.png)

## 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

Thanks to [@bpaulin](https://github.com/bpaulin), [@AiiR42](https://github.com/AiiR42) for their PRs and collaboration