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2 career items use JSON.

May 2026 - May 2026 IMPACT Band BLE impact-detection wearable built on the Seeed Studio XIAO nRF52840 Sense Hardware
  • Sampled the onboard LSM6DS3TR-C 6-axis IMU at 104 Hz and aggregated acceleration and detected impacts into 5-second window summaries
  • Implemented Nordic UART Service transport for newline-framed JSON plus a Python/Bleak receiver for packet reassembly and JSONL logging
  • Built 17 native firmware tests covering packet construction, window aggregation, impact detection and long-packet BLE transport behavior
  • Validated physical taps up to 8.989g dynamic acceleration and recovered an intermittently failing battery-prepared board using a replacement control board
nRF52840Embedded DevelopmentBluetooth Low EnergyC++PythonPlatformIOSensor FusionReal-Time SystemsJSONTestingHardware/Embedded
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Nov 2024 - Dec 2024 NetFS Multi-client network file system Software
  • Built TCP socket server with JSON protocol implementing 18 Linux commands, reader-writer locks, and threaded architecture
  • Implemented concurrent file access with reader-writer locks enabling multiple readers or single exclusive writer per path
  • Achieved 83% test coverage across 339 tests (314 unit, 25 integration) with pathlib security and sorted lock acquisition
PythonTCP SocketsJSONThreadingReader-Writer LocksFile SystemsIPCPytestClickPrompt ToolkitLoguruPydanticConcurrent ProgrammingNetwork ProgrammingTestingSecurityPathlib
GitHub View details