Hello 👋
RSS FeedA developer-dad's notebook, written alongside my three-year-old who is just starting to chirp his first words. Side-project devlogs, learning English, parenting, and writing toward better ideas. Browse the latest posts below.
Recent Posts
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Building K-Saju 3: Casting friends as a K-Pop group
ENHow I added a crew feature to K-Saju, letting friends join a shared K-Pop group casting experience without permanently storing personal information.
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Building K-Saju 2: the hard part after launch was promotion
ENAfter launching K-Saju 1.0, I realized that getting feedback, explaining the product, and promoting it strategically are a different skill from building it.
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Building K-Saju 1: turning Korean saju into K-culture character cards
ENWhy I built K-Saju as a light, K-culture-friendly take on Korean saju, and how it became a character-card and chemistry-test side project.
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Turning one VPS into an AI agent home + a dev box I can reach from anywhere
ENIsolating the Hermes agent in a container, keeping Claude Code and a web terminal on the host, and exposing both with zero open ports using Cloudflare Tunnel + Zero Trust.