Python Modbus Data Logger (GUI Source Code)

⚡ Save 10+ Hours of Coding: The Ultimate Serial Debugging Tool.

Are you tired of writing the same boilerplate code for every new hardware project?

Building a reliable Serial/Modbus tool with a GUI is harder than it looks. You have to handle UI freezing (non-responsive windows), complex Hex string parsing, and CRC-16 checksum calculations.

I have built a production-ready, multi-threaded Python application so you don't have to start from scratch.

🚀 What Makes This Code Special?

• 🧵 Non-Blocking Multi-threading: The serial reading loop runs in a separate background thread. This ensures your UI never freezes, even when polling devices at high speeds.
• ✅ Auto-Calculate Modbus CRC-16: Forget about manual checksum calculators. The script automatically appends the correct CRC (Little-Endian) to your Hex commands.
• 💾 Instant CSV Logging: Data is automatically saved to soiling_data.csv with precise timestamps, making it perfect for long-term stability testing.
• 🛠️ Native GUI (Tkinter): Built using Python's standard tkinter library. No heavy installations (like Qt) required. It just works.
• 🔌 Plug & Play: Automatically detects available COM ports and handles connection errors gracefully.

👨‍💻 Perfect For:

• Automation Engineers: Quickly test PLCs, Inverters, or Sensors via RS485.
• Python Learners: A perfect example of how to combine tkinter with threading and pyserial.
• Hardware Testers: Log sensor data over 24 hours without writing a single line of code.

📂 What's Inside the ZIP?

• main.py: The complete, fully commented source code.
• requirements.txt: Simple dependency file.
• README.md: Step-by-step setup guide.

💡 Fully Customizable: Since you get the full source code, you can easily modify the parsing logic to fit any proprietary protocol.

Stop debugging your tools. Start debugging your hardware.