# parametric-footprint-canary ## Description Minimal 90 mm × 55 mm manual PCB fixture for validating parametric footprint generation, rule precedence, and asset-backed footprint precedence. ## Project Details - **Owner:** greg - **Created:** 8/7/2026 - **Last Updated:** 8/7/2026 - **Visibility:** Public - **Board Outline Dimensions:** 90.2mm × 35.4mm - **Board Outline Width (mm):** 90.2mm - **Power Plane Layers:** Layer 2: GND plane; Layer 3: 3.3V plane - **Board Outline Height (mm):** 35.4mm - **Stackup:** Standard 4 Layer - **System Architecture:** graph LR subgraph Power Subsystem USB_C[USB-C Connector] --> Input_Protection[Input Protection] Input_Protection --> Regulator[3.3V Regulator] end subgraph Core Subsystem Regulator --> MCU[Microcontroller] MCU --> Magnetometer[I2C Magnetometer] end subgraph Display Subsystem MCU -->|Control Interface| DisplayDriver[Display Driver ICs] DisplayDriver --> SevenSeg[3×7-Segment Displays] end subgraph UI Subsystem MCU --> Potentiometer[Brightness Pot w/ Switch] MCU --> StatusLED[Status LED] MCU --> ProgHeader[Programming Header] end subgraph Mechanical Board --> MountHoles[4× Mounting Holes] end - **Display Module Width:** 12.8mm - **Forks:** 1 ## Key Components ### ASSET_WINS_PACKAGE — ASSET_WINS_PACKAGE - Part Type: Integrated Circuits - Role Details: Authored explicit footprint geometry over competing package rule - Functional Group: Footprint Canary - Role: Test Fixture **Pins:** - CONTACT_1 [pin 1] - CONTACT_2 [pin 2] - CONTACT_3 [pin 3] - CONTACT_4 [pin 4] ### BGA_GLOBAL_4X4 — BGA_GLOBAL_4X4 - Role: Test Fixture - Part Type: Integrated Circuits - Role Details: Lowest-priority global BGA package inference example - Package or Case Code: BGA - Functional Group: Footprint Canary **Pins:** - BALL_A1 [pin A1] - BALL_A2 [pin A2] - BALL_A3 [pin A3] - BALL_A4 [pin A4] - BALL_B1 [pin B1] - BALL_B2 [pin B2] - BALL_B3 [pin B3] - BALL_B4 [pin B4] - BALL_C1 [pin C1] - BALL_C2 [pin C2] - BALL_C3 [pin C3] - BALL_C4 [pin C4] - BALL_D1 [pin D1] - BALL_D2 [pin D2] - BALL_D3 [pin D3] - BALL_D4 [pin D4] ### DIP_PARENT_THT — DIP_PARENT_THT - Role Details: Parent PCB element DIP inheritance example - Functional Group: Footprint Canary - Package or Case Code: DIP - Part Type: Integrated Circuits - Role: Test Fixture - Mount: Through Hole **Pins:** - LEAD_1 [pin 1] - LEAD_2 [pin 2] - LEAD_3 [pin 3] - LEAD_4 [pin 4] - LEAD_5 [pin 5] - LEAD_6 [pin 6] ### QFN_LOCAL_EP_WINS — QFN_LOCAL_EP_WINS - Functional Group: Footprint Canary - Role: Test Fixture - Part Type: Integrated Circuits - Package or Case Code: QFN - Role Details: Local QFN important value over competing SOIC selector **Pins:** - LEAD_1 [pin 1] - LEAD_10 [pin 10] - LEAD_11 [pin 11] - LEAD_12 [pin 12] - LEAD_13 [pin 13] - LEAD_14 [pin 14] - LEAD_15 [pin 15] - LEAD_16 [pin 16] - LEAD_2 [pin 2] - LEAD_3 [pin 3] - LEAD_4 [pin 4] - LEAD_5 [pin 5] - LEAD_6 [pin 6] - LEAD_7 [pin 7] - LEAD_8 [pin 8] - LEAD_9 [pin 9] ### SOIC_SELECTOR_XY — SOIC_SELECTOR_XY - Functional Group: Footprint Canary - Role Details: UID-selector SOIC with compound and axis overrides - Part Type: Integrated Circuits - Role: Test Fixture **Pins:** - LEAD_1 [pin 1] - LEAD_2 [pin 2] - LEAD_3 [pin 3] - LEAD_4 [pin 4] - LEAD_5 [pin 5] - LEAD_6 [pin 6] - LEAD_7 [pin 7] - LEAD_8 [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/greg/parametric-footprint-canary~kam](https://www.flux.ai/greg/parametric-footprint-canary~kam).* --- *Generated from [https://www.flux.ai/greg/parametric-footprint-canary~kam](https://www.flux.ai/greg/parametric-footprint-canary~kam)*