Export 2 to Garmin Connect

1. Introduction

1.1. Miscale module (once known as miscale2garmin):

• Allows fully automatic synchronization of Mi Body Composition Scale 2 (tested on XMTZC05HM) or Xiaomi Body Composition Scale S400 (tested on MJTZC01YM) directly to Garmin Connect, with following parameters:
  • Date and Time (measurement, from device);
  • Weight (NOTE: lbs is automatically converted to kg, applies to Mi Body Composition Scale 2);
  • BMI (Body Mass Index);
  • Body Fat;
  • Skeletal Muscle Mass;
  • Bone Mass;
  • Body Water;
  • Physique Rating;
  • Visceral Fat;
  • Metabolic Age;
  • Heart rate (Xiaomi Body Composition Scale S400 only, optional upload to blood pressure section).
• Miscale_backup.csv file also contains other parameters (can be imported e.g. for analysis into Excel):
  • BMR (Basal Metabolic Rate);
  • LBM (Lean Body Mass);
  • Ideal Weight;
  • Fat Mass To Ideal;
  • Protein;
  • Data Status (to_import, failed, uploaded);
  • Unix Time (based on Date and Time);
  • Email User (used account for Garmin Connect);
  • Upload Date and Upload Time (to Garmin Connect);
  • Difference Time (between measuring and uploading);
  • Battery status in V and % (ESP32 - Mi Body Composition Scale 2 only);
  • Impedance;
  • Impedance Low (Xiaomi Body Composition Scale S400 only).
• Supports multiple users with individual weights ranges, we can link multiple accounts with Garmin Connect.

1.2. Omron module:

• Allows fully automatic synchronization of Omron blood pressure (tested on M4/HEM-7155T and M7/HEM-7322T Intelli IT) directly to Garmin Connect, with following parameters:
  • Date and Time (measurement, from device);
  • DIAstolic blood pressure;
  • SYStolic blood pressure;
  • Heart rate.
• Omron_backup.csv file also contains other parameters (can be imported e.g. for analysis into Excel):
  • Category (NOTE: EU and US classification only);
  • MOV (Movement detection);
  • IHB (Irregular Heart Beat);
  • Data Status (to_import, failed, uploaded);
  • Unix Time (based on Date and Time);
  • Email User (used account for Garmin Connect);
  • Upload Date and Upload Time (to Garmin Connect);
  • Difference Time (between measuring and uploading).
• Supports 2 users from Omron device, we can connect 2 accounts with Garmin Connect.

1.3. User module:

• Enables configuration of all parameters related to integration Miscale and Omron;
• Provides export Oauth1 and Oauth2 tokens of your account from Garmin Connect (MFA/2FA support).

2. How does this work

• Miscale and Omron modules can be activated individually or run together:
  • Devices can run together (Mi Body Composition Scale 2 and Omron);
  • Devices can run together but there must be a sequence, first measuring blood pressure and then weighing (Xiaomi Body Composition Scale S400 and Omron);<br> This is because Xiaomi Body Composition Scale S400 requires continuous scanning, importing data from scale will allow you to go to Omron module.
  • Devices can run together in parallel but two USB Bluetooth adapters are required, one for scanning Xiaomi Body Composition Scale S400 and other for Omron;<br> This is an using separate processes, view section 2.6.4.
• Synchronization diagram from Export 2 to Garmin Connect:

2.1. Miscale module | Mi Body Composition Scale 2 | BLE VERSION

• After weighing, Mi Body Composition Scale 2 is active for 15 minutes on bluetooth transmission;
• USB Bluetooth adapter or internal module scans BLE devices for 10 seconds to acquire data from scale;
• Body weight and impedance data on server are appropriately processed by scripts;
• Processed data are sent to Garmin Connect;
• Raw and calculated data from scale is backed up on server in miscale_backup.csv file;
• This part of project is no longer being developed, but it still works.

Select your platform and go to instructions:

• Debian 13 | Raspberry Pi OS (based on Debian 13);
• Windows 11.

2.2. Miscale module | Mi Body Composition Scale 2 | ESP32 VERSION

• After weighing, Mi Body Composition Scale 2 is active for 15 minutes on bluetooth transmission;
• ESP32 module operates in a deep sleep and wakes up every 7 minutes, scans BLE devices for 10 seconds to acquire data from scale, process can be started immediately via reset button;
• ESP32 module sends acquired data via MQTT protocol to MQTT broker installed on server;
• Body weight and impedance data on server are appropriately processed by scripts;
• Processed data are sent to Garmin Connect;
• Raw and calculated data from scale is backed up on server in miscale_backup.csv file;
• This part of project is no longer being developed, but it still works.

Select your platform and go to instructions:

• Debian 13 | Raspberry Pi OS (based on Debian 13);
• Windows 11.

2.3. Miscale module | Xiaomi Body Composition Scale S400 | BLE VERSION

• After weighing, Xiaomi Body Composition Scale S400 transmits weight data for a short while on bluetooth transmission;
• A USB Bluetooth adapter scans BLE devices continuously to acquire data from scale;
• Data from scale is decrypted and parsed into a readable form;
• Body weight and impedance data on server are appropriately processed by scripts;
• Processed data are sent to Garmin Connect;
• Raw and calculated data from scale is backed up on server in miscale_backup.csv file.

Select your platform and go to instructions:

• Debian 13 | Raspberry Pi OS (based on Debian 13);
• Windows 11.

2.4. Omron module | BLE VERSION

• After measuring blood pressure, Omron allows you to download measurement data once;
• USB bluetooth adapter or internal module scans BLE devices for 10 seconds to acquire data from blood pressure device (downloading data can take about 1 minute);
• Pressure measurement data are appropriately processed by scripts on server;
• Processed data are sent to Garmin Connect;
• Raw and calculated data from device is backed up on server in omron_backup.csv file.

Select your platform and go to instructions:

• Debian 13 | Raspberry Pi OS (based on Debian 13);
• Windows 11.

3. Mobile App

I don't plan to create a mobile app, but I encourage you to take advantage of another projects (applies to Mi Body Composition Scale / Mi Scale / S400):

• Android: https://github.com/lswiderski/mi-scale-exporter;
• iOS | iPadOS: https://github.com/lswiderski/WebBodyComposition.

4. Synchronizing data between different ecosystems

A very interesting project called SmartScaleConnect synchronizes scale data (applies to Mi Body Composition Scale 2 / S400) from Xiaomi cloud to Garmin:

• Linux | MacOS | Windows: https://github.com/AlexxIT/SmartScaleConnect.

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