fbiego / dt78-app-android

Alternative app for the DT78 Smartwatch. Also works with DT92 & DT66. May work with watches that use the WearFit 2.0 app.

DT78-App-Android

Chronos

The DT78 app is no longer being maintained in favour of the new Chronos app. Click the image below for more info.

Videos

• How to connect
• Notification test
• DT66 Customized watchface
• LCD Touch Test video
• DT78 with ESP32 PCB

ESP32 Firmware

App Install

DT78-App-v3.6.apk

Released on 00:00 Saturday, 15 January 2022 Greenwich Mean Time (GMT)

Changelog:

• Fixed incorrect sort

The camera may not work on some devices and on others only the back camera may work. Rooted users can long press to switch between In-app or External camera.

Want to downgrade?

Translate

Chronos app translations on Google Sheets

Czech	English	French
German	Greek	Indonesian
Italian	Polish	Portuguese
Russian	Spanish	Vietnamese

Forums

Screenshots

Source Code

Dependency Android-BLE-Library

Clone as follows:

~/AndroidStudioProjects/DT78-App-Android-dev

~/AndroidStudioProjects/Android-BLE-Library

You may need to delete the .idea folder before syncing the project

Firmware

Reverse engineering the watch

Repository

dt78-app-android's Issues

App systematically crashes after startup

Running latest v3.3 since it was released, all was working fine until today

Now, the app systematically crashes after a few seconds when started.
If I stop the service within the app, it does not crash. Only when the service is enabled.

edit: same crash after uninstalling/reinstalling the app

here is the log when the crash occurs :

07-21 10:56:34.400 9732 9732 D AndroidRuntime: Shutting down VM
07-21 10:56:34.401 9732 9732 E AndroidRuntime: FATAL EXCEPTION: main
07-21 10:56:34.401 9732 9732 E AndroidRuntime: Process: com.fbiego.dt78, PID: 9732
07-21 10:56:34.401 9732 9732 E AndroidRuntime: java.lang.NullPointerException
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at com.fbiego.dt78.app.ForegroundService.onDataReceived(ForegroundService.kt:1310)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at com.fbiego.dt78.app.DataReceiver.getData(DataReceiver.kt:14)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at com.fbiego.dt78.ble.LEManager$callback$1$initialize$1.onDataReceived(LEManager.kt:411)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at no.nordicsemi.android.ble.ValueChangedCallback.lambda$notifyValueChanged$0(ValueChangedCallback.java:126)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at no.nordicsemi.android.ble.-$$Lambda$ValueChangedCallback$4rcq0bbOhcTVqpLmftoy8pUEJ-Q.run(lambda)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:751)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:95)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at android.os.Looper.loop(Looper.java:154)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6123)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
07-21 10:56:34.401 9732 9732 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
07-21 10:56:34.405 1105 2639 W ActivityManager: Force finishing activity com.fbiego.dt78/.MainActivity

Step counter

Ok, i found one issue. When I go to check monthly steps it shows me just a little bit of real record but when I scroll from day to day it shows normal. Just a few days ago it was work normally. Here are some pics to see what i am talking about. Just pay attention to dates.

better implement in GadgetBridge

as GadgetBridge is widely used.
But surely you deserve full respect for this work.

More whatchfaces

Hi fbiego.
This is not an issue report.
Congrats for the App.

But there's a bunch of people looking for a way to add more watchfaces than the 14 available?
Is it possible for you to check it out the possibilitie of add more faces on your App to be used on the DT78 ?

We'll appreciate a lot if it is possible (and still using your App, though)

Adding T1S features

Hello I have a T1S watch. I would like to help out in adding the features found on this watch that are not in this app which are Immunity, Temperature and ECG. All the other features work perfectly (compared to the "official" app that doesn't do anything correctly...)
I don't have much info to give first, except the ID shown in the app is AB-00-11...

I know some programming, but nothing on the bluetooth communication or hardware stuff, neither kotlin, so I would need some guidance to get started (if I have all that is needed to do the testing).

Thanks!

PS: I can help improve the french translation as well.

Compatibility question

Amazing! Wow! Thx!

May I ask the following? Is it compatible with devices within the range, or only the mentioned ones? Like I happened to have a dt79. Seems not compatible. (I might be doing something wrong.) :)

All the best,
Gábor

I can make polish translation

I am attaching polish translation spreadsheet.
DT78 app polish.xlsx

Where to find the successor app (Chronos) repository?

The Readme states:

The DT78 app is no longer being maintained in favour of the new Chronos app. Click the image below for more info.

The image links, per redirect, only to Google Play. There is no information on where the source code of Chronos is maintained. Is Chronos not F/LOSS then? Or did I miss something?

Watch not connecting

Hi! I have a new phone that's using android 11, and my watch isn't connecting. OS says "This device requires an app to work" and refuses to connect.

I obviously have DT78 apk installed. Is there anything I may have missed?

Temperature measurement in T1S

My smartwatch T1S also measures body temperature. After connection to Your app I have temperature in watch switched from Celsius to Farenheit. Wearfit 2.0 has Celsius / Farenhait option in Settings next to option kilometers / miles. Could You add this option setting in app and visualisation of temperature?

broken notification

I will select an announcement for the Livesport.cz application. After returning to this option, the already selected application is not active. Please verify...

Is this app E66 device can using?

https://ko.aliexpress.com/item/4000886729200.html
this device

Working devices

Hi, and thank you for this great app!

Maybe we can list the working devices here.

GT105 smartwatch

generic, comes in many brands, official app is (crappy) WearFit 2.0 of course...
firmware on mine is v5.58

app works fine (notifications, fitness measurements, find phone, alarms, camera...)

minor issues :

• only manual syncing of watch data?
• notification display on the watch is very short (only maybe 3 seconds?). Is it possible to implement a longer timeout before the notification on the watch is automatically dismissed?

Phone : Moto X Style (Android 7.0)

Extra notifications icons

Does your watch show the Telegram icon when you use WearFit app?

Watch face

Make app compatible with Android 4.3

I know this sounds weird, but I'm still on a very old phone that does what I need it to do and it is Android 4.3
Would it be possible to lower the minimal OS requirements to make the app usable on my phone?

Thanks, /PA

the application is not showing mac addresses list after re-build it

Hi,
I've tried to clone this project, unzip the library, and try to build the project.
after that, I got my APK (without any changes only 1 import
import android.database.Cursor
inside PhonecallReceiver.kt class as it gives build error without that.
now after installing the APK on the device, it's not showing any Mac addresses on the list even when the watch is connected over Bluetooth.

App disconnects immediately and tries reconnecting on Bluetooth 4.1 & 4.2

When i used the app on a 2016 model phone having bluetooth v4.1, it connects to esp and immediatly disconnects, then again tries to reconnect in few seconds. This goes on. issue is also seen on some other old phones too.

fileprovider issue

Change : android.support.v4.content.FileProvider

To: androidx.core.content.FileProvider

You have missed migration for file provider, it crashes app

Fix fc app

Fc phone log

Watch Faces for DT78

How can we change the watch face for DT78?

synchronization with Google Fit

Hello! Your app is very handy. I use it instead of Wearfit Pro. Tell me if it is possible to add synchronization with Google Fit to the DT78-App-Android application. Possibly as a premium feature.