Closing

CozZie Glow is open source. The source code, module template, and full documentation will be
available on GitHub.

Build one. Build a mod. Improve on what is here. Take the ghost mode discovery somewhere |
haven't thought to look. Study the biphasic sleep response to ember mode light. Put a Pi Zero

on your porch and build a weather station. Point it at something | never imagined.

The incandescent bulb is fading. The PWM colour shift from white to ember to ghost — the
biological signal encoded in a cooling filament — that knowledge should not fade with it.

It started as a $7 lamp.

It became something worth sharing.

Project CozZie Glow — Mark Holand — New Westminster BC — 2026 Developed in
collaboration with Google Gemini and Claude Al Built on Raspberry Pi OS - Flask - Arduino -
12V DC - Parts bin - Curiosity

The Lamp — Everyday Therapy
Ghost mode is the discovery. The lamp is the therapy.

Exposure to incandescent light is now rare. Most bedside lamps are LED. Most people have
never experienced a truly dimmed incandescent lamp at their bedside — never felt what their
nervous system does when the light shifts from warm white through amber into deep red as they
drift toward sleep. They don't know what they're missing because they never had the
comparison.

| had to build the incandescent experience back into existence.
Even in a simple dimmed state — not ghost mode, not ember mode, just a warm incandescent

lamp dialled down to a comfortable level — the quality of the light is different. Broader spectrum.
More natural. The conscious brain may not notice. The nervous system does.