ESP32 BLE Scale support XIAOMI / YUNMAI

alexsahka · September 5, 2019, 9:10pm

Is the Xiaomi Scale required any authorization like PIN code with the Android or Apple application?

1technophile · September 6, 2019, 6:01pm

Here is some information that should help me supporting the Yunmai if equal to Mi Scale V2:

lolouk44/xiaomi_mi_scale/blob/master/Xiaomi_Scale.py

#############################################################################################
# Code to read weight measurements fom Xiaomi Scale V2
# (Framework is prsent to also read from Xiaomi Scale V1, though I do not own one to test so code has not been maintained)
# Must be executed with Python 3 else body measurements are incorrect.
# Must be executed as root, therefore best to schedule via crontab every 5 min (so as not to drain the battery):
# */5 * * * * python3 /path-to-script/Xiaomi_Scale.py
# Multi user possible as long as weitghs do not overlap, see lines 117-131
#
# Thanks to @syssi (https://gist.github.com/syssi/4108a54877406dc231d95514e538bde9) and @prototux (https://github.com/wiecosystem/Bluetooth) for their initial code
#
# Make sure you edit MQTT credentials below and user logic/data on lines 117-131
#
#############################################################################################



#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import print_function
import argparse

This file has been truncated. show original

alexsahka · September 6, 2019, 7:31pm

Thank you I will take a look

1technophile · September 8, 2019, 6:49pm

With the information provided in this link I should be able to integrate both versions of mi scale, once done if you could test it, you will enable to validate the code.

alexsahka · September 8, 2019, 7:59pm

Yes I’m willing to help with testing.

1technophile · September 11, 2019, 8:20pm

I have updated the code with Xiaomi Scale V2 implementation:
https://github.com/1technophile/OpenMQTTGateway/tree/ble-scale

If you can test it and post your serial monitor/MQTT output it would be nice.

alexsahka · September 12, 2019, 4:40am

Here is the serial monitor/MQTT output :

— Miniterm on COM5 115200,8,N,1 —
— Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H —
mounting FS…
mounted file system
reading config file
opened config file
{“mqtt_server”:“10.0.0.xxx”,“mqtt_port”:“xxxx”,“mqtt_user”:“xxxxx”,“mqtt_pass”:“xxxxxx”}
parsed json
*WM: [3] allocating params bytes: 20
*WM: [2] Added Parameter: server
*WM: [2] Added Parameter: port
*WM: [2] Added Parameter: user
*WM: [2] Added Parameter: pass
*WM: [1] AutoConnect
*WM: [2] ESP32 event handler enabled
*WM: [2] Connecting as wifi client…
*WM: [1] STA static IP:
*WM: [2] setSTAConfig static ip not set
*WM: [3] WIFI station disconnect
*WM: [1] Connecting to saved AP: xxxxxxx
*WM: [3] Using Password: xxxxxx
*WM: [3] WiFi station enable
*WM: [2] 5000 ms connectTimeout set
*WM: [2] 5000 ms timeout, waiting for connect…
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] .
*WM: [2] Connection result: WL_CONNECTED
*WM: [3] lastconxresult: WL_CONNECTED
*WM: [1] AutoConnect: SUCCESS
*WM: [1] STA IP Address: 10.0.0.xxx
connected…yeey
saving config
{“mqtt_server”:“10.0.0.xxx”,“mqtt_port”:“xxxx”,“mqtt_user”:“xxxx”,“mqtt_pass”:“xxxxxx”}*WM: [3] freeing allocated params!
*WM: [3] unloading
OpenMQTTGateway mac:
30:AE:A4:7D:1C:xx
OpenMQTTGateway ip:
10.0.0.xxx
xxxx
Connecting to MQTT by IP adress
10.0.0.xxx
BLEinterval btw scans
55555
ZgatewayBT multicore ESP32 setup done
MQTT_MAX_PACKET_SIZE
1024
Setup OpenMQTTGateway end
BT Task running on core 0
client disconnected
MQTT connection…
Connected to broker
Subscription OK to the subjects
Creating BLE buffer
device detected
0C1C57A4BAxx
BLErssi
-66
txPower
-59
BLE DISTANCE :
2.25
Pub json into:
home/home_presence/OpenMQTTGateway_ESP32_BLE
{“id”:“0c:1c:57:a4:ba:xx”,“name”:“YUNMAI-SIGNAL-H1WS”,“manufacturerdata”:“d��W␜\f”,“rssi”:-66,“txpower”:0,“distance”:2.246586}
Pub json into:
home/OpenMQTTGateway_ESP32_BLE/BTtoMQTT/0C1C57A4BAxx
{“id”:“0c:1c:57:a4:ba:xx”,“name”:“YUNMAI-SIGNAL-H1WS”,“manufacturerdata”:“d��W␜\f”,“rssi”:-66,“txpower”:0,“distance”:2.246586}

1technophile · September 12, 2019, 8:13pm

It seems that yunmai scale are not advertising the weight per service data (contrary to the xiaomi ones) meaning that it will not be easy to add them.

Does someone could tests the xiaomi scale v2 implementation ?

nguyenaitriet · September 28, 2019, 12:36pm

How about xiaomi scale v1. I have already tested it. it did a good job with weight less than 10kg.
More than that it is wrong or do I miss something.
Like this.
Untitled
And the result: {"weight:17.34}

1technophile · September 28, 2019, 5:04pm

Hello,

Could you post the service data published to the broker corresponding to this false weight ?

1technophile · September 28, 2019, 5:22pm

@pavon87 does your xiaomi scale looks the same as this one ?

nguyenaitriet · September 29, 2019, 12:05am

I will do when I am home. Thanks for your quick response.

nguyenaitriet · September 29, 2019, 10:31am

I don’t know how to get service data in my broker. So post them all in the top. I used MQTT explorer.
My broker is an addon in Home Assistant.
The bottom picture is from nrf connect.
So let’s see what is wrong. I took these two pictures at the same time when I was on my scale.

Thanks.

1technophile · October 3, 2019, 8:00pm

This issue has been corrected by @kanttti and is no longer present in the development branch

nguyenaitriet · October 6, 2019, 12:36pm

It works like a charm. Thank you very much.

Untitled

alexsahka · December 20, 2019, 11:05pm

Any news? The YUNMAI Premium Smart Scale still not working with this gateway…

1technophile · December 21, 2019, 1:45pm

As it seems that yunmai needs a connection, yes it is not supported for the moment.

spektus · April 17, 2021, 10:09pm

hi everyone, I need help! I’m trying to integrate my scales to home assistant. Im using ESP32-DevKitC NodeMCU, Scales - XMTZC04HM

for whatever reason I’m not getting any weight values from scales

Sanik · June 18, 2021, 1:54pm

I have same problem with XMTZC04HM - don’t show weight, but connected

1technophile · June 19, 2021, 12:29am

Hi,

Could you indicate the firmware version of your scale please ?