【Hardware】 🧱 01. aitl-physical-reference

— Fixing Physics Before Control

📌 Introduction

aitl-physical-reference is a
minimal physical reference PCB designed to anchor abstract control logic
to real voltage, real current, and real copper traces.

This is not a “control board.”
It is a reference point that defines how physics exists before control begins.

🎯 Why This Exists

Control theory, AI, FSMs, and PID controllers often assume the following—implicitly:

• Voltage is ideally generated
• Current flows as required
• Outputs can be treated as logical values

In reality:

• Voltage is unknown unless measured
• Current is constrained by resistance
• Boundaries are defined by copper traces and PCB outlines

This board exists to fix that overlooked but fundamental layer
in the smallest possible form.

🧩 Components (Intentionally Minimal)

This board contains only the following elements:

• LED: Visualization of output state
• Resistor: Physical constraint on current
• Switch: Discrete physical event input
• Test Points: Locations to measure voltage and current
• PCB Outline (Edge.Cuts): The physical boundary

There is no “function.”
There is only meaning.

🔁 Logic → Physics → Copper

1️⃣ Schematic (Logic → Physics)

A minimal schematic that anchors abstract logic to measurable voltage and current.

2️⃣ PCB Layout (Explicit Physical Constraints)

The “physical truth” defined by copper traces, component placement, and board outline.

3️⃣ 3D View (Existence as an Object)

An object with height you can touch, connectors you can plug in, and points you can probe.

🚫 What This Is Not

To avoid misunderstanding, this must be stated clearly.

• Not an MCU evaluation board
• Not a feature-rich demo board
• Not a performance-optimized design
• Not tied to a specific control architecture

This is a reference.
Nothing more. Nothing less.

🛠️ How to Use It

This board can be used in the following contexts:

• As a physical starting point for control education
• To verify assumptions before FSM / PID / AI control
• To share physical intuition with logic-focused designers
• As the baseline physical layer of AITL
  (Architecture for Integrated Technology Logic)

It is the board you start with when you say:

“Let’s begin from reality.”

🧾 Summary

Control can only stand on top of physics.

aitl-physical-reference fixes that lowest layer
as a schematic, as copper, and as a physical object.

Before control, there must be physics.

This board exists to make that fact unavoidable—
a minimal, uncompromising reference.

🔗 Links

• GitHub Pages
  https://samizo-aitl.github.io/aitl-physical-reference/

• GitHub Repository
  https://github.com/Samizo-AITL/aitl-physical-reference