BLE_DMM_Client

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Bluetooth Multimeter Client

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# BLE_DMM_Client 蓝牙万用表客户端
An Bluetooth Multimeter Client. Using Pyside6 and bleak. 
适配市场主流蓝牙通讯的万用表，使用pyside6和bleak 
## UI
v3.2 in win11: 
 
<img width="654" alt="image" src="https://github.com/840922704/BLE_DMM_Client/blob/main/Preview.png">
## Support DMM Models

Just tested with ZOYI ZT-300AB. This solution is very cheap, I just bought a new one by ~ 100 RMB (~ 10 + USD). 
 
This is the cheapest with capability to connect with Mobile Phone or Computer. They officially provide Mobile Phone version. So I just open this project for fun. 
## Supported OS
| Operate System| Code Version | Released Version | Test |
| :------------ | :------------------- | :--------------- | :------------ |
| Windows | x86/x64 10 and above*| x64 10 and above*| Yes |
| Linux | x86/x64 | No | Not completely|
| Mac OS | x86/x64 | No | Not completely|

\* *Because the BLE module bleak just support win10 and above in windows platform.* 
Windows(10 and above), Linux and MAC OS (platform supported by python). 
Just tested in Windows and exe release version of Windows.
## Achived functions
- BLE devices Browser 
- Real time display 
- Data Export 
- Real time plot 
- Multi-devices
- Multi-languages 
- Multi-themes 
## Things To Do
- None 
- Maybe self-defined ble decoder support in the future.

# Development
## Requirements
Python 3.8 
pyside6 pyqtgraph qt_material bleak 
pyinstaller (nuitka not recommend because of seriously memory leak problem) 
If using Linux, need BlueZ >= 5.43 (additionally required by bleak) 
Whether using conda (or other virtual env management) or not, it's recommended to use 'pip install' to install all packages listed in requirements.txt. 
Run:
```shell
python main.py
```
## The way to pack for Windows:
### Environment：
First install the pyinstaller: 
`pip install pyinstaller` 
### Pack (Scripts for Windows)
See the files in releases fold for detail.
### PyInstaller
Enter your enviroonment (Virtual recommand) -> Install all packages needed -> Run the file: "/Releases/Win64/1.pyinstaller.bat". 
**Note**: All the resource files are included in ./Ui/resources.qrc. 
### Advanced Installer
Then, for Windows, you can run directly or pack it with NSIS or other pack programs such as advanced installer. 
For example, using "BLE DMM Client.aip" in "/Releases/Win64/Advanced_Install". 
### Zip for Releases
Run "/Releases/Win64/3.Copy_and _Compress.bat".

## Known issues
### Memory leak
Packing by Nuitka will cause a serious memory leak problem, so PyInstaller is recommended. 
### Compiled file may get the error below:
```
File "C:\MAIN~1.DIS\pyqtgraph\graphicsItems\ButtonItem.py", line 19, in __init__
ZeroDivisionError: float division by zero
```
They just fix this bug in [2022.04](https://github.com/pyqtgraph/pyqtgraph/blob/a237b6e6a606b6625069a39cda9aa072e07e1882/pyqtgraph/graphicsItems/ButtonItem.py), if you use old version, please fix it manually, change line 18 of ButtonItem.py in your env:
`if width is not None:` to `if width is not None and self.pixmap.width():` 
Cross-platform ability in theory, but not tested yet. 
### qt_material issue
qt_material's dark theme have some issues with pyside6. Current version (2.14) not fixed yet, so manually add part of stylesheet in main.py.
```python
self.apply_stylesheet(self, theme='dark_lightgreen.xml', extra=extra)
tooltip_stylesheet = """
 QToolTip {
 background-color: black;
 }
 QComboBox {
 color: white;
 }
"""
self.setStyleSheet(self.styleSheet()+tooltip_stylesheet)
```

## License
GPL v3.0
## References
https://github.com/ludwich66/Bluetooth-DMM 
https://github.com/Shiro-Nek0/Bluetooth-DMM.py 
https://github.com/webspiderteam/Bluetooth-DMM-For-Windows/tree/master/BluetoothLEExplorer

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