Project CozZie Glow

Introduction

| am just a man trying to understand why he can't sleep.

That is where this started. Not in a lab. Not with a research grant. In a tent, in a bedroom, in
New Westminster BC, with a parts bin, a Raspberry Pi, and a brain that refuses to leave a
problem unsolved.

| am not a software developer. | am not a sleep researcher. | am an electronics hobbyist, a
transit worker, a father, and someone who has spent forty years taking things apart to see how
they work.

It started with autistic intuition. The LED light was wrong. | could feel it. | did not know why yet. |
went to the parts bin and built something better. That is how every significant discovery in this
project began — not with a hypothesis, but with a signal that something was wrong and a
refusal to leave it alone until | understood it.

CozZie Glow started as a lamp. A simple light for a tent. It became a circadian rhythm platform,
a sleep study infrastructure, a data logging system, and ultimately — a window into eight hours

of mystery that nobody else was willing to look through.

This document is the full story. The hardware. The science. The software. The discoveries. The
philosophy.

Built for $7. Running right now. Watching over me while | write this.

What is Project CozZie Glow?

What CozZie Glow currently is, and what it started as, are an interesting story.

CozZie Glow is a home built sleep lab, data logger, and natural sunrise/sunset circadian rhythm
clock and lamp. It is built around a Raspberry Pi 4+, running headless on Raspberry Pi OS,
accessed and updated remotely via SSH. The Pi connects to an Arduino Uno via USB serial.
The Uno is the control centre for PWM (pulse width modulation) lamp brightness control, using 2
independent 16-bit PWM channels. Each PWM channel connects to a Solid State Relay (SSR),