Integrating Xiaomi Mi Scale

Third party integrations
124

I’m not sure which version it is, I think it may be V2.
It’s this one anyway and it works well

125

Thanks guys.

Do you know if there is a docker image for the BLE MQTT integration?

126

sorry I don’t know any, though above script has everything
If MQTT integration doesn’t work, you can try a bash command instead.
You’d basically need to remove:

  • replace import paho.mqtt.client as mqtt with import subprocess
  • remove the mqtt bits (def __init__(self): and def _start_client(self):)
  • replace self.mqtt_client.publish(prefix, weight, qos=1, retain=True) with
MQTT_Command = ["mosquitto_pub", "-h", MQTT_HOST, "-p", MQTT_PORT, "-u", MQTT_USER, "-P", MQTT_PASSWORD, "-t", prefix, "-r", "-m", weight, "-q", "1"]
ps = subprocess.Popen(MQTT_Command)
  • replace self.mqtt_client.publish(prefix, mitdatetime, qos=1, retain=True) with
MQTT_Command = ["mosquitto_pub", "-h", MQTT_HOST, "-p", MQTT_PORT, "-u", MQTT_USER, "-P", MQTT_PASSWORD, "-t", prefix, "-r", "-m", mitdatetime, "-q", "1"]
ps = subprocess.Popen(MQTT_Command)
  • replace self.mqtt_client.publish(prefix, miimpedance, qos=1, retain=True)
    with
MQTT_Command = ["mosquitto_pub", "-h", MQTT_HOST, "-p", MQTT_PORT, "-u", MQTT_USER, "-P", MQTT_PASSWORD, "-t", prefix, "-r", "-m", miimpedance, "-q", "1"]
ps = subprocess.Popen(MQTT_Command)
1 Like
127

So let me get this right:

  • you connect your mi scale to your raspberry via bluetooth permanently
  • the raspberry is running your script 24/7 as a cron job in the background.
  • the data obtained from the scale is transferred to raspberry via bluetooth and to mqtt via your script.
  • the mqtt data can then be linked to HA.

Is that how it works?

128

I have a bluetooth dongle on my HA server. The scale seems to hold the last weight info for about 5 min so I have a cron job that runs every 5 min and calls the script.
The script connects to the scale and gets the latest reading and then sends the data to HA over MQTT

You first need to retrieve the MAC address of your scale: sudo hcitool lescan (step on the scale just before to wake it up) and enter it here instead of REDACTED: MISCALE_MAC = 'REDACTED'

129

Right I see thanks for that.

Other than weight what else can the script record from the scale?

130

it returns a data that appears to be impedance but no idea how Xiaomi uses that data to compute other measures so for now I compute BMI in HA

131

Oh right I see…

I was hoping there would be a way to get body fat percentage etc

132

well if you manage to find the formula to retrieve it from the impedance, please let me know.
In the meantime, BMI is weight / (height * height) where weight is in Kg and height is in m.

1 Like
133

Hi,

I’ve got mine working with Hassio by linking the mi fit app to google fit and then getting the data using the google fit custom component.

It’s a workaround, but it works and updates fairly quickly.

Thanks!

2 Likes
134

Does that give you body fat percentage too ?

135

My scale only gives out weight data so I’m not sure, but I don’t think so.

136

I got this python script from the Openhab comunity that includes the xiaomi data, from version 2 of the scale:


i’ve just started using HASS, is there a way to execute a python script easily on HASSIO?
137

Hi,

i tried using the miscale node in node-red on my hassos running on tinker board. but am getting the following error
Error: Cannot find module 'bluetooth-hci-socket
any one having gone through this? or knows a solution?
i couldnt find a node to install matching this. and dont know how to install it externally in HASSIO.

138

@lolouk44 is this (script) utilized for just 1 person using the scale? or it can record more than 1 person?

139

Hi @bachoo786

The same script is used for 3 persons. Weights are different enough that I know which person it is based on the weight alone
Here is the script I use
https://github.com/lolouk44/xiaomi_mi_scale/blob/master/Xiaomi_Scale.py

2 Likes
140

This script is for version 1 of the script right?
Do you cron run this at different intervals or how do you handle the readings?

141

Hi @Brian_Mollegaard_Ped
Not sure what you mean with

The script it triggered via a cron job indeed that runs every 5 min. This is often enough that the scale doesn’t go into sleep mode, yet not that often that it drains the battery, which I’m really impressed with:
I’ve had the scale for about a year now. I weigh myself once a day and I’ve not had the replace the batteries yet.
Compared to my previous Salter non smart scale that drained its battery within 4 month with no use, it’s quite a change…

142

Hi @lolouk44
There is at least two versions of the scale, v. 1 measures only weight while v.2 adds fat %, water % and other measurements. I have been thinking about putting a xiaomi vibration sensor on the scale, instead but it seem a bit overkill. :slight_smile:

143

The script works with both v1 and v2 scales. With v2 it sends the body impedance, though I’ve not yet figured out the formula that xiaomi uses to calculate other body measurements.
I personally use this one to figure out the bmi
image https://www.organicnutrition.co.uk/images/body-mass-index-formula.jpg