Documentation

Build Guide

Put the hardware together, start to finish: no soldering experience required.

Bill of Materials

Every part you need, whether you're getting the board fabricated or wiring one up by hand.

Troubleshooting

Something not working? Work through these in order to find out where the problem actually is.

Firmware Overview

What's actually running on the device, and how it turns a single letter into light.

Command-Line Tool

The andon-light command that talks to your device: install, commands, and how it finds the board.

Claude Code Hooks

How the light knows what Claude Code is doing, without you running any commands yourself.

Codex CLI Hooks

How the light knows what Codex CLI is doing, without you running any commands yourself.

Install on Linux

One command to install, one to check it worked, one to wire it up to your agent.

Install on Windows

The one-click installer, what the security warning means, and how to verify it's working.