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MSP432 · HB100 Doppler Radar · Embedded C · ADC · Signal Processing · SolidWorks · 3D Printing

Embedded Velocity Measurement Device

Apr 2025 – May 2025

A portable handheld speed tracker built around an HB100 Doppler radar module and an MSP432 microcontroller. The system samples the radar’s Doppler-shift output through the ADC and computes target velocity from the measured frequency. I wrote the Embedded C firmware covering ADC capture, sensor calibration, noise filtering, and edge detection logic that produces markedly more stable readings than naive threshold detection. I designed the analog filtering and calibration workflow, captured raw radar data, and verified behavior against oscilloscope measurements. I also led the hardware integration, including SolidWorks enclosure design, 3D printing, soldering, and internal assembly, delivering a working handheld prototype.

Highlights

  • Built a handheld speed tracker with HB100 Doppler radar and MSP432, computing velocity from ADC-sampled frequency shift
  • Wrote Embedded C firmware for ADC capture, calibration, noise filtering, and edge detection, verified against oscilloscope measurements
  • Led hardware integration from SolidWorks enclosure design through soldering and assembly to a working prototype