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BitwiseSynapse/README.md

Jose M Hernandez Jr. (BitwiseSynapse)

United States Navy Veteran • B.S. Computer Engineering (Cal Poly Pomona) • M.S. Medical Device and Diagnostic Engineering (USC)
Focused on prototyping and hardware design.


Skills

  • PCB Design (Altium): schematic capture, layout, revision control, documentation
  • Analog/Digital: mixed-signal design, filtering, ADC/DAC interfacing, digital logic
  • Bring-up & Testing: bench testing (oscilloscope/DMM), troubleshooting, characterization
  • Sensor integration
  • Software (as needed): C/C++
  • Tools: Multisim, PSpice, Verilog, MATLAB

Projects

  • THEIA Haptic Navigation Belt (Prototype): belt-worn wearable augmenting the white cane for blind and low-vision users; six ToF/LiDAR sensors through a TCA9548A I²C mux, eight-channel haptic drive, PiSugar S+ power on ESP32-S3; sole hardware developer on a six-person capstone team
  • Dual-Heated Tissue Clamp (Prototype): temperature-controlled thermal sealing clamp; opto-isolated MOSFET heater drive, MAX31856 thermocouple feedback, Altium schematics, ON/OFF hysteresis control on ESP32
  • DriftBand Sleep Apnea Monitor (Prototype): wearable chest strap logging IMU posture/motion and SpO₂/HR (MAX30102) on ESP32; docs, BOM, testing, FDA predicate and ISO/IEC standards notes
  • BANSHEE UAV Power Allocation System (PAS): multi-source MOSFET power switching and monitoring; docs, schematics, test evidence
  • Solar Li-Ion Charger: solar input, regulation, charge control and protection; report documentation
  • AC-DC 5V Power Supply: transformer, bridge rectifier, smoothing, zener/BJT regulation; scope validation

Connect

Pinned Loading

  1. theia-haptic-navigation-belt theia-haptic-navigation-belt Public

    Belt-worn haptic obstacle-detection wearable augmenting the white cane for blind and low-vision users. USC capstone: hardware architecture, sensor integration, bring-up.

  2. banshee-uav-power-allocation-system banshee-uav-power-allocation-system Public

    Custom MOSFET power switching board enabling multi source energy management for UAVs. Designed to extend drone flight time by intelligently switching between batteries, solar, supercapacitors, and …

    C++ 1

  3. dual-heated-tissue-clamp dual-heated-tissue-clamp Public

    Dual-heated jaw clamp prototype with thermocouple feedback and isolated heater drive electronics for controlled thermal sealing experiments.

    C++

  4. driftband-sleep-apnea-monitor driftband-sleep-apnea-monitor Public

    DriftBand: a wearable chest-strap system that logs posture/motion and SpO₂/HR overnight to support at home sleep apnea screening and clinician review.

    Jupyter Notebook

  5. solar-li-ion-charger solar-li-ion-charger Public

    Closed-loop solar Li-ion charger prototype with current/voltage sensing and PWM control; includes firmware, wiring notes, and report PDF.

  6. acdc-5v-power-supply acdc-5v-power-supply Public

    AC DC 5 V power supply (bridge rectifier + reservoir capacitor + Zener referenced BJT pass stage); measured ripple ~9.7 mV p-p at 50 Ω (~100 mA).