【Hardware】 🧱 01. aitl-physical-reference

— Fixing Physics Before Control

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📌 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.

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🎯 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.

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🧩 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.

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🔁 Logic → Physics → Copper

1️⃣ Schematic (Logic → Physics)

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

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2️⃣ PCB Layout (Explicit Physical Constraints)

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

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3️⃣ 3D View (Existence as an Object)

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

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🚫 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.

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🛠️ 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.”

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🧾 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.

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🔗 Links

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

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

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