Journal & notes
Articles & technical writing
Notes on electrical engineering lab experiments, WebAudio DSP synthesis, embedded firmware, and web software.
Building Low-Cost IoT Telemetry Nodes with ESP32 & MQTT
A complete guide to assembling reliable low-power IoT telemetry hardware: non-blocking FreeRTOS sampling, ADC piecewise calibration, deep sleep power budgets, and MQTT payload serialization.
Building Web Audio DSP Plugins with React: Real-Time Signal Synthesis
A deep dive into building real-time parametric equalizers, WebAudio synthesizers, and 16-bit PCM WAV audio exporters directly in browser React applications.
Working Honestly with AI Coding Tools: Human Verification Protocol
AI assistance is useful when it is treated as a fast initial draft and reviewed with the same rigorous scrutiny as an external pull request.
Active Op-Amp Filter Design: Sallen-Key Topologies, Gain-Bandwidth Limits & Bode Verification
A rigorous look at 2nd-order Sallen-Key Butterworth low-pass filter design: calculating damping ratios, evaluating op-amp Gain-Bandwidth Product (GBWP) roll-off, and verifying -3dB cutoff on the bench.
I2C Bus Signal Integrity: Rise Times, Bus Capacitance & Pull-Up Resistor Calculation
Troubleshooting I2C communication hangs on breadboards and breakout modules: measuring parasitic capacitance, calculating bounded pull-up resistor windows, and verifying rise times on an oscilloscope.
Engineering a High-Performance Technical Portfolio with TanStack Start & Supabase
A complete technical deep dive into architecting a developer platform with TanStack Start, React 19 SSR, Tailwind CSS v4 design tokens, and a Supabase backend without bloated client bundles.
Building a Real-Time Hardware Bench Telemetry Pipeline: ESP32 to Supabase Realtime
Architecture breakdown of my physical electronics workbench telemetry pipeline: cycle-accurate 3.2 kS/s sampling on ESP32 Core 0, Deno Edge Function validation, and low-latency Supabase Realtime WebSocket streaming.
PID Tuning Intuition: Deriving Closed-Loop Control from Differential Equations to Bench Step Response
A first-principles guide to Proportional-Integral-Derivative controllers: mathematical derivation of 2nd-order physical plants, forward Euler numerical discretization, anti-windup clamping, and extracting 2% settling time.