OpenBCI Recorder

A lightweight real-time EEG acquisition and recording application for OpenBCI boards, developed with Qt/C++.

The application provides:

• Real-time EEG visualization
• Adjustable EEG display scaling
• Real-time bandpass filtering using fidlib
• MATLAB .mat recording using matio
• Multi-threaded streaming for responsive GUI performance

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Features

• Connect to OpenBCI boards through a serial COM port
• Start/stop EEG streaming
• Real-time EEG waveform visualization
• Adjustable amplitude scaling (µV/div)
• Configurable bandpass filter frequencies
• Save EEG recordings directly into MATLAB .mat files
• Multi-threaded architecture with ring-buffered display updates

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Screenshot