Crystal Spectral Scanner System

About the Project

A control system for a research installation that captures the spectral emission of crystal lattices at different angles. Built on an Atmel AT90USB microcontroller with custom USB 2.0 isochronous data transfer mode.

Technical Stack

• Microcontroller: Atmel AT90USB with built-in USB 2.0
• Programming: C for firmware, C++ (MFC) for desktop application
• USB Mode: Modified isochronous transfer for precise timing
• Synchronization: External signal generator for sensor coordination
• Development: Keil IDE for embedded development

Key Features

• Real-time spectral data acquisition
• Precise angle control for crystal rotation
• Custom USB protocol implementation
• Windows desktop application for data visualization
• Synchronization with external equipment

Results

Successfully delivered a reliable system for crystal lattice research that enabled precise spectral analysis at various angles. The custom USB implementation provided the necessary data throughput while maintaining timing accuracy.