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This study presents the design and implementation of a two-channel digital oscilloscope and spectrum analyzer based on the Teensy microcontroller, with data transmission via USB CDC. The system includes a signal conditioning stage with digital filters and operational amplifiers to ensure proper adaptation before analog-to-digital conversion, performed by the microcontroller’s internal ADC. With a sampling rate of up to 100 kHz, the system enables time and frequency domain analysis using the Fast Fourier Transform (FFT). A PC-based graphical interface allows real-time data visualization and processing. This development provides an efficient solution for signal analysis in research and educational applications.

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Design and Implementation of a Two-Channel Digital Oscilloscope and Spectrum Analyzer Using Teensy

  • 会议论文

  • 发表日期：

    2025年

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  • Cristiam Romero-Toledo,
  • Steven Vega-Chimbo,
  • Luis Serpa-Andrade,
  • Roberto Garcia-Velez,
  • Santiago Moscoso-Bernal

摘要

This study presents the design and implementation of a two-channel digital oscilloscope and spectrum analyzer based on the Teensy microcontroller, with data transmission via USB CDC. The system includes a signal conditioning stage with digital filters and operational amplifiers to ensure proper adaptation before analog-to-digital conversion, performed by the microcontroller’s internal ADC. With a sampling rate of up to 100 kHz, the system enables time and frequency domain analysis using the Fast Fourier Transform (FFT). A PC-based graphical interface allows real-time data visualization and processing. This development provides an efficient solution for signal analysis in research and educational applications.