pi-keyboard

Lighting commands use via-rgb, which owns HID packet encoding.

Dynamic VIA/QMK keyboard RGB lighting indicator reflecting Pi's internal states.

Ambient physical awareness of what your AI coding agent is doing right on your mechanical keyboard:

Pi State	Color & Effect	Trigger Condition
Idle	White Breathing (白色 呼吸灯)	Session started, ready & waiting for user input
Thinking	Blue Breathing (蓝色 呼吸灯)	Model generating, reasoning, or executing tools
Unread Chat	Green Breathing (绿色 呼吸灯)	Agent settled with a completed response for user
Need Approval	Yellow Blinking (黄色 闪烁)	User prompt, question, or interactive permission gate
Error	Red Blinking (红色 闪烁)	API failure, tool error, or abort

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Zero Flash Wear (--no-save)

All hardware updates are executed strictly in memory (--no-save mode). Lighting changes modify active RAM state on the keyboard's MCU without writing to EEPROM/Flash, avoiding storage wear across thousands of state transitions.

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Multi-Zone Control

Supports discrete control for keyboard lighting channels:

• All Zones (all): Both per-key backlight and underglow/side strips.
• Per-Key Matrix (matrix): Keycap backlight (Channel 3 in VIA/QMK).
• Underglow / Side Strips (underglow): Bottom and edge light strips (Channel 2 in VIA/QMK).

Shared Directory Session Registry

Per-session glow records use pi-kit’s canonical directory identity, hashed into the registry directory name. Existing paths are resolved through realpath, while missing paths use their absolute path; this keeps slash-versus-hyphen project names separate. Reads, cleanup, and clean shutdown verify the stored cwd belongs to the requested directory. Older registry directory names are not migrated.

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Structure

keyboard/
├── index.ts           — Package-root extension entry point
├── src/
│   ├── config.ts      — Keyboard config read/write helpers
│   ├── driver.ts      — via-rgb binary resolution & CLI execution
│   ├── state-machine.ts — State transitions and LED apply logic
│   ├── global-sessions.ts — Per-cwd session glow record registry
│   ├── types.ts       — KeyboardState, KeyboardZone, KeyboardConfig
│   └── index.ts       — Pi lifecycle hooks, /keyboard command
├── features/          — BDD contract
├── tests/             — Package E2E tests
└── README.md

Installation

pi install npm:pi-keyboard

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Usage

Interactive Menu

Type /keyboard in any Pi session:

• Toggle On / Off
• Test Lighting States (preview Idle, Thinking, Unread, Approval, Error)
• Active Zone Selection (all, matrix, underglow)
• Brightness Scaling (100%, 75%, 50%, 25%)
• Hardware Connection Info

CLI Commands inside Pi

/keyboard on            # Enable lighting indicators
/keyboard off           # Disable lighting indicators
/keyboard status        # View active status and hardware info
/keyboard test thinking # Test blue thinking light
/keyboard test error    # Test red blinking light
/keyboard test unread   # Test green unread chat light

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Standalone CLI: via-rgb

This package coordinates with the native macOS/Linux via-rgb binary (~/.local/bin/via-rgb), allowing shell scripts, cron jobs, Raycast, and Hammerspoon to control lighting outside Pi as well:

# Query status
via-rgb status

# Turn off / on
via-rgb off
via-rgb on -b 200

# Set specific color & zone
via-rgb --zone matrix set -c blue
via-rgb --zone side set -c warmwhite

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Configuration

Settings are saved in ~/.pi/agent/keyboard.json:

{
  "enabled": true,
  "zone": "all",
  "brightnessScale": 1.0,
  "saveToEeprom": false
}

License

MIT