2023 BFY4 Abstract Detail Page
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| Abstract Title: |
W03: Intuitive Understanding of the Nyquist Rate with Arduino |
| Abstract: |
This workshop is based on a two-session lab from a lab skills class, Physics 113: Electronics for Physicists, which targets sophomore and junior physics majors to prepare them for research experience (and the advanced lab course). In the first session of the lab, students focus on technical skills: how to use serial communication to control a digital-to-analog (DAC) converter from an Arduino microcomputer, and how to use interrupts to control timing from an external clock. In the second session of the lab, students use their setup to investigate the Shannon-Nyquist sampling theorem by sampling an incoming analog signal and trying to reproduce it with the DAC output. By driving a speaker with the output of the DAC, students develop a visceral understanding of aliasing, and connect what they hear to the Nyquist limit. The use of audible frequencies helps students think in frequency space, and provides practice in thinking about the frequency spectrum of a signal. |
| Abstract Type: |
Workshop
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Author/Organizer Information |
| Primary Contact: |
Kathryn Ledbetter
Physics Department, Harvard University
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Workshop Documents |
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