A Beginner's Two-Component Crystal-Style Wi-Fi Detector
2 days ago
- #RF-detection
- #electronics
- #DIY
- Crystal radios use minimal components to pick up broadcast signals.
- A modern version uses a Schottky diode and LED to detect 2.4 GHz signals like Wi-Fi and Bluetooth.
- The circuit is simple, effective, and great for educational demonstrations.
- Assembly requires twisting the diode and LED legs together correctly.
- The detector works by rectifying RF energy into visible LED flashes.
- Correct orientation of the diode and LED is crucial for functionality.
- The detector is optimized for 2.4 GHz and may not work with 5 GHz signals.
- Avoid touching the antenna legs to prevent signal absorption.
- Component selection is critical; the 1N5711 diode and red LED are recommended.
- The project is a practical way to learn about RF detection and rectification.