Backup your data

Make sure to always keep backups of your data. There are many simple ways to loose your data:

• commands below could be destructive
• uninstalling Gadgetbridge without export and backup will cause loosing your data
• reinstalling (uninstalling and installing again, for example if you want to replace F-Droid version with own compiled apk version) without export and backup will cause loosing your data

You can use the Data export or Data Auto export to get copy of your data, here is how:

The Data Export function exports database with your activity, sports activities and other data, like prefrence settings. Activity data is exported as sqlite database. Sports activities (if captured as GPX) are exported as GPX files. Preference data are also exported in the form of XML files. All these files are exported into a folder called files in internal storage area available to Gadgetbridge, for example /storage/emulated/0/Android/data/nodomain.freeyourgadget/files/. So this is a system folder. From here, you must copy the data into some permanent storage, because this folder is erased if you uninstall Gadgetbridge. So make sure to copy/move/backup your files after export!

Contents

• Data Backup
• Data export
• Data import
• Data Auto export
• Extracting CSV Data from the SQLite Database
• Calculate time between Heart Rate samples, in SQL
• Merge data from old Gadgetbridge export
• Calculate daily steps average, in SQL
• Draw charts for year/month/week/day in Python
• Import data from MiFit
• View data in external applications

Data export

You can use the Data export or Data Auto export to get copy of your data.

The Data Export function exports database with your activity, sports activities and other data, like prefrence settings. Activity data is exported as sqlite database. Sports activities (if captured as GPX) are exported as GPX files. Preference data are also exported in the form of XML files. All these files are exported into a folder called files in internal storage area available to Gadgetbridge, for example /storage/emulated/0/Android/data/nodomain.freeyourgadget/files/. So this is a system folder. From here, you must copy the data into some permanent storage, because this folder is erased if you uninstall Gadgetbridge. So make sure to copy/move/backup your files after export!

Exported files:

• Export_preference - your global preferences, XML file
• Export_preference_xx:xx:xx:xx:xx:xx - device specific preferences, XML files
• Gadgetbridge - activity, sleep, activity data, sqlite database
• gadgetbridge-track-2020-04-14T17_14_29+02_00.gpx - GPX file (might contain GPS, Heartrate...)

Database

The Gadgetbridge activity database is be exported to SQLite format and can be used for further analysis or visualization.

Database management

Under the main menu, go to Database management. Exported data will be in the Gadgdetbridge file under a directory shown on the screen.

For this example we’ll assume the file to be /storage/emulated/0/Android/data/nodomain.freeyourgadget/files/Gadgdetbridge.

Some Android versions might not have yet created the /storage/emulated/0, resulting in GB error saying, ‘Cannot find export path’. This was probably because there was no /storage/sdcard0/ directory. After inserting external storage and tried exporting, Android probably created the /storage/sdcard0/ directory. /storage/sdcard0/ is still in local storage.

Data import

File previously exported via export function can be re-imported back (current data will be overwritten!) by placing the database file into /storage/emulated/0/Android/data/nodomain.freeyourgadget/files/Gadgdetbridge.

Data Auto Export

Gadgetbridge data cab be automatically exported periodically for external backups, sync, processing etc. To set Autoexport, go to Settings → Auto export → Auto export enabled → Yes.

Selected export directory and name of the exported file via Export location

Set interval period (in hours) via Export interval.

Trigger Auto Export manually

One can test the Auto Export via menu Database management → AutoExport → Run AutoExport now.

Extracting CSV Data from the SQLite Database

This shows how to access the previously exported database on Debian GNU/Linux 9, the sqlite3 and android-tools-adb packages are required.

To list all tables in the database:

$ adb shell
OnePlus3:/ $ su
OnePlus3:/ # cd /storage/emulated/0/Android/data/nodomain.freeyourgadget.gadgetbridge/files
OnePlus3:/ # sqlite3 Gadgetbridge
SQLite version 3.19.4 2017-08-18 19:28:12
Enter ".help" for usage hints.
sqlite> .table

ACTIVITY_DESCRIPTION            NOTIFICATION_FILTER           
ACTIVITY_DESC_TAG_LINK          NOTIFICATION_FILTER_ENTRY     
ALARM                           PEBBLE_HEALTH_ACTIVITY_OVERLAY
BASE_ACTIVITY_SUMMARY           PEBBLE_HEALTH_ACTIVITY_SAMPLE 
CALENDAR_SYNC_STATE             PEBBLE_MISFIT_SAMPLE          
DEVICE                          PEBBLE_MORPHEUZ_SAMPLE        
DEVICE_ATTRIBUTES               TAG                           
HPLUS_HEALTH_ACTIVITY_OVERLAY   USER                          
HPLUS_HEALTH_ACTIVITY_SAMPLE    USER_ATTRIBUTES               
ID115_ACTIVITY_SAMPLE           XWATCH_ACTIVITY_SAMPLE        
MI_BAND_ACTIVITY_SAMPLE         ZE_TIME_ACTIVITY_SAMPLE       
NO1_F1_ACTIVITY_SAMPLE          android_metadata 

To export to CSV:

sqlite> .headers on
sqlite> .mode csv
sqlite> .output out.csv
sqlite> select * from BASE_ACTIVITY_SUMMARY;

Reference: SO.

Calculate time between Heart Rate samples, in SQL

SELECT "TIMESTAMP",datetime("TIMESTAMP",'unixepoch','localtime') as DATETIME, STEPS, HEART_RATE, ("TIMESTAMP"- LAG("TIMESTAMP") OVER())/60 as TIME_DIFF
FROM MI_BAND_ACTIVITY_SAMPLE
WHERE "TIMESTAMP" BETWEEN (strftime('%s','2019-08-02 16:15:00','utc')) and (strftime('%s','2019-08-03 23:15:00','utc'))
and HEART_RATE<>255

Calculate daily steps average, in SQL

select avg(a) from (select strftime('%Y.%m.%d', datetime(timestamp, 'unixepoch')) as d,sum(STEPS)as a from MI_BAND_ACTIVITY_SAMPLE group by d)

Merge data from old Gadgetbridge export

You can merge data from previous export (for example another Xiaomi device) into new one by opening your current export and inserting all data from an older file:

Make fresh new export as per Data export and open it in sqlite3:

sqlite3 Gadgetbridge

Open older file with previous data in this sqlite3 instance:

ATTACH 'Gadgetbridge_old' as old;

Insert old data into fresh backup:

insert into MI_BAND_ACTIVITY_SAMPLE SELECT * from old.MI_BAND_ACTIVITY_SAMPLE;

Close sqlite3, make sure to put this fresh Gadgetbridge file back into /storage/emulated/0/Android/data/nodomain.freeyourgadget.gadgetbridge/files/ and perform Data import.

Draw charts for year/month/week/day in Python

import sqlite3
import matplotlib.pyplot as plt
import datetime
import numpy as np

conn = sqlite3.connect('Gadgetbridge')
c = conn.cursor()
min_steps_per_minute=00

d=c.execute("select strftime('%Y.%m.%d', datetime(timestamp, 'unixepoch')) as d,sum(STEPS) from MI_BAND_ACTIVITY_SAMPLE where STEPS > ? group by d",(min_steps_per_minute,)).fetchall()
w=c.execute("select strftime('%Y.%W', datetime(timestamp, 'unixepoch')) as d,sum(STEPS) from MI_BAND_ACTIVITY_SAMPLE where STEPS > ? group by d",(min_steps_per_minute,)).fetchall()
m=c.execute("select strftime('%Y.%m', datetime(timestamp, 'unixepoch')) as d,sum(STEPS) from MI_BAND_ACTIVITY_SAMPLE where STEPS > ? group by d",(min_steps_per_minute,)).fetchall()
y=c.execute("select strftime('%Y', datetime(timestamp, 'unixepoch')) as d,sum(STEPS) from MI_BAND_ACTIVITY_SAMPLE where STEPS > ? group by d",(min_steps_per_minute,)).fetchall()
print("all avg:",c.execute("select avg(STEPS) from MI_BAND_ACTIVITY_SAMPLE where STEPS > ? ",(min_steps_per_minute,)).fetchall())

db={x[0]:x[1] for x in d}
wb={x[0]:x[1] for x in w}
mb={x[0]:x[1] for x in m}
yb={x[0]:x[1] for x in y}

fig, ax = plt.subplots(4)

def doit(where,what,color,label):
    where.bar(
        np.arange(len(what)),
        list(what.values()),
        0.3,
        #tick_label=list(what.values()),
        tick_label=list(what.keys()),
        label=label,
        color=color,
    )
    where.legend()
    #where.xticks(rotation=60)

doit(ax[3],yb,"g","steps/year")
doit(ax[2],mb,"b","steps/month")
doit(ax[1],db,"r","steps/day")
doit(ax[0],wb,"g","steps/week")

for ax in fig.axes:
    plt.sca(ax)
    plt.xticks(rotation=65)
plt.show()
c.close()

Make data calculattions via SQL commands

Steps per day

select date(TIMESTAMP, 'unixepoch') as "Date", sum(STEPS) as "Steps"
from PEBBLE_HEALTH_ACTIVITY_SAMPLE
group by date(TIMESTAMP, 'unixepoch')

Sleep per day

select
  round(sum(TIMESTAMP_TO-TIMESTAMP_FROM)/3600.0,1) as "Duration",
  sum(TIMESTAMP_TO-TIMESTAMP_FROM)/3600 as "Hours",
  sum(TIMESTAMP_TO-TIMESTAMP_FROM)%3600/60 as "Minutes",
  datetime(min(TIMESTAMP_FROM), 'unixepoch') as "Start",
  datetime(max(TIMESTAMP_TO), 'unixepoch') as "End"
from PEBBLE_HEALTH_ACTIVITY_OVERLAY
where RAW_KIND = 1
group by date(TIMESTAMP_FROM, 'unixepoch', '+4 hours', 'start of day');

Sleep, deep sleep, nap and deep nap per day

select
  round(sum(case when RAW_KIND = 1 then TIMESTAMP_TO-TIMESTAMP_FROM else 0 end)/3600.0,1) as "Sleep Duration",
  round(sum(case when RAW_KIND = 2 then TIMESTAMP_TO-TIMESTAMP_FROM else 0 end)/3600.0,1) as "Deep Sleep Duration",
  round(sum(case when RAW_KIND = 3 then TIMESTAMP_TO-TIMESTAMP_FROM else 0 end)/3600.0,1) as "Nap Duration",
  round(sum(case when RAW_KIND = 4 then TIMESTAMP_TO-TIMESTAMP_FROM else 0 end)/3600.0,1) as "Deep Nap Duration",
  datetime(min(TIMESTAMP_FROM), 'unixepoch') as "Start",
  datetime(max(TIMESTAMP_TO), 'unixepoch') as "End"
from PEBBLE_HEALTH_ACTIVITY_OVERLAY
where RAW_KIND in (1, 2, 3, 4)
group by date(TIMESTAMP_FROM, 'unixepoch', '+4 hours', 'start of day');

Import data from MiFit

1. get your MiFit data via GDPR data request, either from Mifit or via this URL.

2. make an export of database in Gadgetbridge (make an extra backup of this exported database)

3. unzip received MiFit data and place the .csv files into a single folder (see list of required files below)

4. put exported Gadgetbridge database file into the same folder

5. put this script into the same folder

6. either remove “numbers” from the .csv file names, or rename the xxx_file_name variables below

7. you may need to edit device_id and user_id. for most people (with one device) this will remain as is below

8. run this script with python3: python import_from_mifit.py

9. re-import the updated Gadgetbridge database file to GB

#!/usr/bin/env python3

import csv
import datetime
import sys
import sqlite3
import random

# import script to get MiFit data into Gadgetbridge database

# what this tool does:
# - it checks if a particular record (based on timestamp) is in database
# - if record does not exist, it is created:
# - steps are added
# - for sleep, separate minute based records are created
# - all records will have heart rate measurements, if available in the data

# what this tool does not:
# - doesn't import activities

# it can damage your data, make plenty of backups to be able to roll back at any point

# 1) get your MiFit data via GDPR data request, URL:
# https://account.xiaomi.com/pass/serviceLogin?callback=https%3A%2F%2Faccount.xiaomi.com%2Fsts%2Foauth%3Fsign%3D7QjKYjTipB1s7OliGXsWt1OL9sE%253D%26followup%3Dhttps%253A%252F%252Faccount.xiaomi.com%252Foauth2%252Fauthorize%253Fskip_confirm%253Dfalse%2526client_id%253D428135909242707968%2526pt%253D1%2526redirect_uri%253Dhttps%25253A%25252F%25252Fapi-mifit-cn.huami.com%25252Fhuami.health.loginview.do_not%2526_locale%253Dde_DE%2526response_type%253Dcode%2526scope%253D1%25252016001%25252020000%2525206000%2526_sas%253Dtrue%26sid%3Doauth2.0&sid=oauth2.0&lsrp_appName=In%20%24%7BMi%20Fit%7D%24%20%C3%BCber%20das%20Mi-Konto%20anmelden&_customDisplay=20&scope=1%206000%2016001&_locale=de_DE&_ssign=2%26V1_oauth2.0%266qHWjGF3kaRWOWCGQdM8gIt6lR8%3D

# 2) make an export of database in Gadgetbridge
# - make an extra backup of this exported database
# 3) unzip received MiFit data and place the .csv files into a single folder (see list of required files below)
# 4) put exported Gadgetbridge database file into the same folder
# 5) put this script into the same folder
# 6) either remove "numbers" from the .csv file names, or rename the xxx_file_name variables below
# 7) you may need to edit device_id and user_id. for most people (with one device) this will remain as is below
# 8) run this script with python3:
#  python import_from_mifit.py
# 9) re-import the updated Gadgetbridge database file to GB

activity_file_name = "ACTIVITY_MINUTE.csv"
hr_file_name1 = "HEARTRATE.csv"
hr_file_name2 = "HEARTRATE_AUTO.csv"
sleep_file_name = "SLEEP.csv"

database = "Gadgetbridge"
device_id = 1
user_id = 1

# do not edit below

conn = sqlite3.connect(database)
cursor = conn.cursor()

# build HR dictionary
hr = {}

data = csv.reader(open(hr_file_name1), delimiter=",")
# 1572088219,81
next(data)  # skip header
for line in data:
    hr[line[0]] = line[1]

data = csv.reader(open(hr_file_name2), delimiter=",")
# 2017-07-14,23:35,54
next(data)  # skip header
for line in data:
    date = "{0},{1}".format(*line)
    dt = datetime.datetime.strptime(date, "%Y-%m-%d,%H:%M")
    # timestamp=dt.timestamp()
    timestamp = dt.replace(tzinfo=datetime.timezone.utc).timestamp()
    hr[timestamp] = line[2]

# steps
data = csv.reader(open(activity_file_name), delimiter=",")
# 2017-07-04,13:18,11
next(data)  # skip header
for line in data:
    # print(line)
    date = "{0},{1}".format(*line)
    dt = datetime.datetime.strptime(date, "%Y-%m-%d,%H:%M")
    w = {}
    # timestamp=dt.timestamp()
    timestamp = dt.replace(tzinfo=datetime.timezone.utc).timestamp()
    w["timestamp"] = timestamp
    r = cursor.execute(
        "SELECT * from MI_BAND_ACTIVITY_SAMPLE where TIMESTAMP=$timestamp", (w)
    ).fetchone()
    if r:
        # print("record exists", r,line[2])
        pass
    else:
        steps = int(line[2])
        heart_rate = hr.get(timestamp, 255)
        raw_intensity = random.randint(10, 130)
        if steps < 80:
            raw_kind = 1  # slow walking
        elif 100 > steps > 80:
            raw_kind = 1  # 3 fast walking, unsupported by GB
        else:
            raw_kind = 4  # 4 running
        print("inserting", steps, heart_rate)
        cursor.execute(
            "INSERT INTO MI_BAND_ACTIVITY_SAMPLE VALUES (?,?,?,?,?,?,?)",
            (timestamp, device_id, user_id, raw_intensity, steps, raw_kind, heart_rate),
        )

# sleep
data = csv.reader(open(sleep_file_name), delimiter=",")
# 2017-07-05,1499317099,45,348,0,1499206440,1499230020
next(data)  # skip header
for line in data:
    deep_sleep = int(line[2])
    light_sleep = int(line[3])
    timestamp = int(line[5])
    ts_to = int(line[6])
    # deep sleep
    # timestamp=ts_from
    for i in range(0, deep_sleep):

        w["timestamp"] = timestamp
        r = cursor.execute(
            "SELECT * from MI_BAND_ACTIVITY_SAMPLE where TIMESTAMP=$timestamp", (w)
        ).fetchone()
        if r:
            # print("record exists", r,line[2])
            pass
        else:
            heart_rate = hr.get(timestamp, 255)
            print("inserting sleep", timestamp)
            steps = 0
            raw_kind = 123
            raw_intensity = random.choice([20, 2, 7] + [0] * 20)
            cursor.execute(
                "INSERT INTO MI_BAND_ACTIVITY_SAMPLE VALUES (?,?,?,?,?,?,?)",
                (
                    timestamp,
                    device_id,
                    user_id,
                    raw_intensity,
                    steps,
                    raw_kind,
                    heart_rate,
                ),
            )

        timestamp = timestamp + 60

    for i in range(0, light_sleep):

        w["timestamp"] = timestamp
        r = cursor.execute(
            "SELECT * from MI_BAND_ACTIVITY_SAMPLE where TIMESTAMP=$timestamp", (w)
        ).fetchone()
        if r:
            # print("record exists", r,line[2])
            pass
        else:
            heart_rate = hr.get(timestamp, 255)
            print("inserting sleep", timestamp)
            steps = 0
            raw_kind = 121
            raw_intensity = random.choice([20, 2, 7] + [0] * 20)
            cursor.execute(
                "INSERT INTO MI_BAND_ACTIVITY_SAMPLE VALUES (?,?,?,?,?,?,?)",
                (
                    timestamp,
                    device_id,
                    user_id,
                    raw_intensity,
                    steps,
                    raw_kind,
                    heart_rate,
                ),
            )

        timestamp = timestamp + 60


conn.commit()
conn.close()

View data in external applications

• GadgetStats is a Companion app for Gadgetbridge, developed with Ionic.
• miband2_analysis

Original MiBand data analysis, only for reference here:

• https://rstudio-pubs-static.s3.amazonaws.com/178074_8a8f987bb4c047fdb13cbafc81cca58d.html
• https://github.com/ckesc/miband_analytics