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Playground

Feels like I have played with various programming stuff over the years. Maybe it is worth documenting and sharing.

Projects that have spun off:

  • Oct 2024: Tab Tree Tracker: a Chrome extension that visualizes your browser tab navigation history as an interactive tree structure. Track, analyze, and visualize how your browsing sessions evolve over time.

TTT

BPM

  • Jun 2025: VoiceModeTranscript: a real-time transcript recorder for ChatGPT voice conversations with dual audio capture, whisper.cpp streaming, and intelligent LLM deduplication.

    • actually works for any mic and system audio transcribing
  • Aug 2025: Bay Bridge Traffic Cam: a comprehensive real-time traffic detection and monitoring system for Bay Bridge with Prometheus + Grafana integration and public dashboard access.

BBT

3dgs-viewer

  • Nov 2025: GDSJam: Web-based live collaborative GDSII viewer for semiconductor layout visualization.

gdsjam

  • Dec 2025: psh (Programmable Snippet Helper): a text expansion tool with directive-based syntax for dynamic snippet expansion. Reuse frequently-used prompts for LLMs without repetitive typing. Type ;;d.ne,l2 instead of "be concise, no emoji" every time.

  • Jan 2026: Claude Code Inspector: comprehensive tools for analyzing, tracking, and visualizing Claude Code agent workflows. Extract entities from API logs, track agent instances, build workflow DAGs, and visualize with interactive React-based viewer.

Claude Code Inspector

  • Jan 2026: SLM Guessr: an educational web application for training intuition on Spatial Light Modulator (SLM) phase masks and their corresponding 2D FFT intensity patterns. Features progressive curriculum with 150+ samples across 7 difficulty levels, gallery mode, and quiz mode.

SLM Guessr

  • Feb 2026: WebSpice: a browser-based SPICE circuit simulator with a minimal LTSpice-like GUI. Runs entirely client-side using NGSpice compiled to WebAssembly.

WebSpice

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Code and scripts for random projects.

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