I am a self-directed engineer actively building within signal processing, VLSI & ASIC design, and field-based device physics in the context of semiconductors, robotics and autonomous systems, and machine learning.

My approach to engineering is fundamentally first-principled and implementation-level, focused on building performant, scalable, and valuable proprietary systems.

Engineering Portfolio

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NORDIC

A Hazard Perception System for the Long White Cane.

Attitude-compensated terrain sensing that classifies drop-offs, steps and obstacles, alerting through real-time haptic feedback. Featuring capacitive grip, wake-on-motion, self-calibration in under a minute and a live digital twin.

Haisong QiWen Ying Gan

Cutaway render of the NORDIC sensing module and cane handle

nordic-cane.com

Formally-Verified Multi-Mode Digital Timepiece: Feature-Layered SystemVerilog RTL on Cyclone V FPGA

A multi-mode digital timepiece (settable clock, lap-capable stopwatch, editable countdown timer, and PWM brightness control) implemented as fully synchronous RTL and taken through a complete industry-representative flow: lint-clean SystemVerilog, cocotb/pytest regression, k-induction formal proof of every sequential submodule, Quartus synthesis and place-and-route, and gate-level netlist inspection. Built by feature layering (Watch V1→V4) from small, parametrised, single-responsibility modules, with correctness treated as a first-class deliverable rather than an afterthought.

SystemVerilog·Quartus Prime (Cyclone V, DE1-SoC)·Yosys / SymbiYosys / Z3 (formal, SMT-LIB)·Icarus Verilog·Verilator·cocotb + pytest·Verible·Docker dev containers·git·VaporView

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Broadband Amplitude-shift Keying Transceiver

A broadband ASK modulation-demodulation transceiver taking analog design from theory to a debugged hardware prototype. The chain integrates a BJT series-switch mixer, a high-Q multiple-feedback bandpass filter, a Gilbert-cell four-quadrant multiplier, and a Schmitt-trigger decision device, each characterised in the frequency domain and validated from SPICE to hardware, emphasising working with device non-idealities rather than suppressing them.

Matlab and Simulink (Signal Processing, System ID Toolboxes)·Python (SciPy)·SPICE (KiCad, LTspice)

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Electromagnetic Device Modelling for High-frequency Semiconductor Applications

Field-based modelling track spanning vector integro-differential descriptions, to hardware-validated high-frequency power electronics, building electromagnetic device models from open-ended physical phenomena rather than lumped-circuit abstractions. Work spans analytical field derivations, visualisation tool development, and SPICE-to-breadboard validation, each result cross-checked against symmetry arguments, closed-form solutions, and measured waveforms rather than accepted from a single method.

MATLAB (Antenna, RF, PDE toolboxes, Simscape electrical, Simulink)·LTspice & OrCad (transient identification, transmission-line modelling)·breadboard and geometry-aware PCB deployments·SymPy (closed-form, symbolic solvers)

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Planetary Rover Science Payload: Precision Gantry & ISRU Instrument Integration (Unimelb Rover Team)

Co-developed the science-payload motion and integration hardware for a planetary-analogue rover: a precision gantry providing stable linear translation and repeatable positioning for a spectrometer, focused imaging module, and regolith-preparation brush and drill. Engineered through the late-design and manufacturing stages of the 2025-26 development cycle, under strict mass, volume, and competition-rule constraints, where positioning repeatability and vibration isolation directly bound measurement quality for in-situ resource analysis.

Onshape (collaborative parametric CAD, part-based modelling)·SOLIDWORKS·first-order FEA validation·FDM additive-manufacturing iteration pipeline·workshop manufacturing workflows (Telstra Creator Space)

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Ti-6Al-4V Prosthetic Hip Implant: Structural Simulation, Failure Analysis & Mass Optimisation

A finite-element study spanning hand-derived stiffness formulation, MATLAB PDE solvers, and CAD-based simulation, validating each result across analytical, numerical, and commercial-solver methods. Work covers 2D truss FEM from first principles, Kirsch hole stress-concentration verification, and a full design-analyse-optimise loop on a prosthetic hip implant, emphasising mesh convergence and physically-grounded boundary conditions over black-box solver output.

MATLAB (PDE Toolbox)·SOLIDWORKS (Simulation (FEA), Non-linear & Fatigue Analysis, Advanced Meshing (curvature based, growth-rate control))

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By Category

Computational Electromagnetics & Field-Based Device Modelling

Developed first-principles electromagnetic and device-level models using Maxwell's equations, vector calculus, and nonlinear semiconductor theory.

Derived field distributions from Maxwell formulations.
Modelled capacitance and inductance from geometry and material properties.
Analysed switching power systems with attention to EMI and dynamic behaviour.
Designed nonlinear voltage regulation systems with feedback amplification.

See Work

Multiphysics Simulation & Numerical Methods

Numerical implementation of structural mechanics and dynamic system solvers, integrating finite element modelling with nonlinear and differential equation methods.

Derived element stiffness matrices and assembled global FEM systems with boundary partitioning.
Benchmarked stress concentration against analytical and CAD-based solutions.
Performed mesh refinement and geometry optimisation for stress and safety-factor control.
Developed a well-parameterised numerical solver library for root-finding, IVP/BVP integration, interpolation, quadrature, and differentiation with structured input validation and error handling.
Architected reusable solver frameworks with configurable tolerances, convergence criteria, and stability controls to support long-term use in dynamic system modelling and simulation workflows.

See Work

System Architecture, Drivetrain Design & Embedded Integration

End-to-end mechatronic system development spanning drivetrain optimisation, robust control systems, and subsystem packaging across autonomous rover and electromechanical prototype platforms.

Co-developed a precision gantry system supporting a spectrometer, adjustable camera focus mount, and regolith preparation brush, integrating structural framing, sensor mounting, and lightweight processing enclosures within rover mass and packaging constraints.
Integrated C++ based embedded control systems with PWM speed profiling, autonomous motion cycles, sensor-based thermal-throttle protection, and manual override safety interlocks.
Led iterative mechanical refinement through failure testing, resolving gear shear, tolerance stack-up, housing redesign, and electronic durability issues to improve robustness and serviceability.
Designed and validated a compound spur gear drivetrain, balancing torque transmission, manufacturability, safety, and strict power profiles.

See Work

Signal Processing & Machine Learning

Active filter synthesis, frequency-domain characterisation, and hardware-validated digital signal processing, extended into machine learning and data-driven methods.

Derived and cross-validated active filter transfer functions analytically, in simulation, and on hardware.
Applied FFT-based spectral analysis to identify and reject unknown noise tones from real audio recordings.
Discretised continuous-time filter designs for real-time digital execution and diagnosed architectural performance ceilings.

See Work

Embedded Systems, Control & Autonomous Dynamics

Development of distributed embedded systems and performance-oriented C++ architectures (integrating hardware control, real-time communication pipelines, and structured software design from firmware through to GUI) alongside designed-and-tuned feedback control for dynamic platforms, combining practical PID implementation with classical, stability-focused control analysis.

Built and tuned a PID-controlled drone platform, implementing stable attitude regulation under actuator saturation and disturbance inputs.
Designed a dedicated tuning stand / test rig to safely capture step responses, validate sign conventions, isolate axes, and iteratively tune gains.
Applied frequency- and time-domain control methods (transfer functions, Laplace-domain modelling, and closed-loop stability analysis) to predict and verify system behaviour.
Engineered a covert distributed audio surveillance system using ESP32 microcontrollers (C++), implementing low-latency data streaming over WebSockets to a Python backend for AI-triggered event handling and secure alert protocols.
Developed a performance-oriented C++ chess engine with clean object-oriented architecture, modular rule implementation (castling, en passant, promotion), and OpenGL/ImGui-based GUI for responsive state rendering.

See Work

Miscellaneous

Thermal and fluid science work spanning experimental pipe flow characterisation and thermodynamic cycle analysis, with results cross-validated against theoretical models and performance assessed against idealised benchmarks.

Measured friction factors across flow regimes and validated against the Moody chart and Darcy-Weisbach model.
Classified laminar and turbulent pipe flow from Reynolds number calculations derived from controlled experimental conditions.
Analysed thermodynamic cycle performance using first- and second-law methods, with entropy and efficiency benchmarking.

See Work