ADALM Pluto SDR Spectrum Analyzer

See invisible electromagnetic waves around you!
This project turns an ADALM Pluto SDR into a real-time Spectrum Analyzer using Python and PyQt, allowing you to visualize Wi-Fi, LTE, GSM, Bluetooth, and other RF signals that are constantly present in our environment.

---

📡 See It In Action (Video Demo)

🎬 Watch the full video demo and tutorial on YouTube:

---

🚀 What is this?

Have you ever wondered what the world around you would look like if you could see the invisible electromagnetic waves — like Wi-Fi, LTE, GSM — that are constantly traveling through the air?

In this project, we build a real-time Spectrum Analyzer using ADALM Pluto SDR and Python, allowing us to "see" those signals and explore the electromagnetic spectrum right from your desk!

---

⚙️ How does it work?

• The SDR sweeps across frequencies, measuring amplitude of each frequency using a lock-in amplifier technique.
• The received signal is mixed with the SDR's Local Oscillator (RX LO) to down-convert the desired component to DC.
• A low-pass filter extracts the amplitude of that component.
• The process repeats for every frequency step, generating a real-time spectrum of everything around you!

---

🎯 Features

• ✅ Real-time wideband frequency sweep and visualization
• ✅ Peak hold and threshold-based alerts
• ✅ Draggable markers for easy analysis
• ✅ Highlights known bands (Wi-Fi, LTE, GSM, Bluetooth, etc.)
• ✅ Fully adjustable sweep and filter settings via GUI
• ✅ Data export to CSV

---

🛠 Tools & Technologies Used

• ADALM Pluto SDR
• Python 3
• PyQt6 (GUI framework)
• PyQtGraph (real-time graph plotting)
• NumPy & SciPy (signal processing and filtering)

---

💾 How to Use

1. Clone the Repository

git clone https://github.com/fromconcepttocircuit/ADALM-Pluto-Spectrum-Analyzer.git
cd ADALM-Pluto-Spectrum-Analyzer

2. Install Required Python Libraries

pip install pyadi-iio numpy scipy pyqt6 pyqtgraph

3. Linux Users: Install Additional System Package

If you're on Linux, install this to avoid missing Qt plugin errors:

sudo apt install libxcb-cursor-dev

4. Run the Spectrum Analyzer

python spectrum_analyzer.py

5. Connect ADALM Pluto SDR

• Make sure ADALM Pluto is connected and reachable at its default IP: 192.168.2.1.
• You can adjust the IP address in the code if necessary:

self.sdr = adi.ad9361(uri='ip:192.168.2.1')

---

⚙️ Adjust Sweep and Settings in GUI

• Sample Rate (Hz): Adjust sampling speed.
• Cutoff (Hz): Set filter cutoff frequency.
• Sweep Start/Stop (Hz): Frequency range to scan.
• # of Points: Resolution of the sweep.
• Threshold (dB): Level to trigger alerts.
• Peak Hold / Markers: Analyze signals in detail.

---

⚠️ Notes

• The IP 192.168.2.1 is the default address for ADALM Pluto SDR. Change it in the code if yours is configured differently.
• The GUI may require PyQt6-specific themes for proper visualization — adjust as needed.

---

📈 Example Signals Detected

• 📶 Wi-Fi 2.4 GHz & 5 GHz
• 📱 LTE / GSM / AWS bands
• 🎧 Bluetooth devices

---

📜 License

This project is licensed under the MIT License — feel free to use, modify, and share!

---

🙌 Contributions and Feedback

If you try this project and have feedback or improvements, feel free to open an issue or submit a pull request. Let's make SDR more accessible together!

---

🔗 Connect

• YouTube Channel: From Concept To Circuit
• GitHub: https://github.com/fromconcepttocircuit
• More RF & SDR projects coming soon!

---

#ADALMPluto #SpectrumAnalyzer #ElectromagneticWaves #RFSignals #PythonProjects #SDR #WirelessSignals