kevin.md

FeatherCode is a native Mac code editor I built because I was tired of waiting for Electron to boot just to read one file.

I thought sending a board to a factory was like printing a PDF.

I made a circuit-board business card that opens my website and lights an LED with power harvested from the phone tapping it.

I built a tiny piano app and found a chord that physically cannot be played on a MacBook keyboard.

Use PS5, Xbox, Switch, Steam, 8BitDo, and 300+ game controllers as a keyboard, mouse, macro pad, OBS remote, or Anki controller on macOS.

NVIDIA recommends a 200G fabric for clustering DGX Sparks.

Local LLM Server exposes Apple's on-device Foundation Models over an OpenAI- and Ollama-compatible HTTP API — point any client library at your phone's LAN address.

Whisper Caption runs OpenAI's Whisper model on-device to caption videos in 90+ languages — karaoke word highlighting, no cloud, no subscription.

Topgolf records where your ball ended up, not how fast you hit it.

I dictated the idea one morning and shipped it that afternoon: Scroll Elevator, a menu-bar app that puts jump-to-top/bottom buttons at your cursor when you scroll.

The Mac has no universal 'scroll to top' button, and laptops dropped the Home/End keys.

How to use a PlayStation, Xbox, or 8BitDo controller for Anki on Mac — with the prebuilt AnKing community profile in ControllerKeys.

A typo in the Topgolf API that will outlive us all, and why misspellings become permanent the moment they ship.

I asked Claude what it's like to exist as thousands of simultaneous instances.

I'm seeing job postings for a role that didn't exist six months ago.

How a debug string from Anthropic's API docs became a skeleton key for AI customer service gatekeepers.

32,000 lines, 612 tests, 41 audit rounds.

I built a macOS app that turns your file system into a 3D city you can walk through, fly over, and use to watch AI agents work.

Why ideas are multiplying in the agent era, and how to capture them before they evaporate.

Voice input is atrophying my typing skills.

AI puts everyone within reach of the technical frontier.

I gave Claude an empty directory and said do whatever you want.

Human thought runs at 10 bits per second.

A game controller puts hundreds of actions within finger's reach.

When tests and prompts encode your intent, code becomes a regenerable artifact.

Git worktrees let you run multiple AI agents on the same codebase without them stepping on each other's toes.

I asked Claude to write drugs for humans.

An RF engineer working in isolated environments reminded me why I built Local LLM Server

When you share your workspace with AI agents, your custom aliases become their confusion.

When source code becomes the compiled output, what's the new source?

We used to write code.

AI makes code generation instant.

After two years of refusing to support Apple's headset while happily serving Meta Quest, Google brings YouTube to visionOS.

Voice transcription errors don't matter when your listener is an LLM.

From barbed wire telephones to WebSockets over HTTP, the best network is often the one that already exists.

A simple technique for adding visual distinction to git logs, terminal tabs, and shell prompts.