Embedded Systems

Microcontroller firmware, IoT devices, FPGA digital logic design, and hardware-software integration.

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FPGA Wordle: Building a Complete Game Console from Transistors to Touchpoints

A deep dive into the design and implementation of FPGA Wordle, a fully hardware-implemented word-guessing game that runs on a custom five-stage pipelined MIPS processor, with real-time VGA display and PS/2 keyboard input — all built from first principles in Verilog and assembly.

FPGA MIPS Verilog WebAssembly

EOG Sleep Mask: Detecting Secondary Sleep Strokes in Real-Time project thumbnail

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Biomedical Engineering Embedded Systems

EOG Sleep Mask: Detecting Secondary Sleep Strokes in Real-Time

A wearable, real-time stroke detection system disguised as a comfortable sleep eye mask. By utilizing electrooculography (EOG) to track eye movement and an onboard microcontroller to perform real-time signal processing, the device acts as an automated sentinel.

Arduino Op Amp EOG

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Embedded Systems

Your Sensor Remembers Nothing: Building a Fixed-Memory Ring Buffer to Give Hardware a Short-Term History

A deep dive into the architecture and engineering of a privacy-first mobile mindfulness coach that runs entirely on-device using React Native and Google MediaPipe's on-device LLM capabilities.

The Instruction That Needs an Answer Before the Question Is Asked

A detailed walkthrough of the `bypass` module in this Wordle project — a combinational forwarding network that detects and resolves data hazards in a five-stage RISC pipeline, ensuring correct execution without stalling for register-to-register dependencies.

How a 25 MHz Clock Becomes 307,200 Pixels on a Screen

A deep dive into the `simple_480p` VGA timing generator, revealing how two counters and a handful of comparators produce the exact sequence of signals required to drive a 640×480 display at 60 Hz — all from first principles in Verilog.

One Processor, Two Worlds: Running FPGA Hardware on a Desktop Without Changing a Line of RTL

A detailed walkthrough of the `sim_top` module in this Wordle project — a Verilator-based simulation harness that virtualizes keyboard input and VGA output, allowing the same MIPS processor design to run interactively on a desktop computer without modification.