Blinking LED Circuit Design

running ERC reviews and fixing issues...

31:03

Started: running ERC reviews and fixing issues.
Running Missing Power check.
Reading schematic for U1, BT1, S1.
Running Missing Power check.
Running Missing Power check.
Search [[object Object]](https://www.flux.ai/search?q=%5Bobject%20Object%5D&type=components).
Search complete.
Search 2 components.
Search complete.
Running Missing Power check.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Ran simulation.
Running simulation...

Updated 1 net

Connected U1:VCC, C2:P1, S1:NO

Updated 1 net

Connected U1:GND, BT1:N, GND:GND

Updated properties for 2 objects

Set BT1's Pin Type to "Power Output"

Set S1's Pin Type to "Passive"

Added 1 component

Added 1x Net Portal as Net1

Updated 1 net

Connected Net1:P1 to U1:VCC

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Project Specification
Version: 0.1.0 Date: ... Author: ... Status: ... Tags: ...

1. Executive Summary
What board we're building and the intended outcome in one paragraph. ...
2. Goals and Non-Goals
What must be true in this rev, and what is explicitly out of scope. ...
2.1 Goals
...
2.2 Non-Goals
...
3. System Overview
High-level description of the system and how the board fits into it. ...
3.1 Block Diagram
A space for a simple block diagram (power + data paths). ...
4. Requirements
What the design must do (behaviorally and electrically), independent of implementation details. ...
4.1 Functional Requirements
...
4.2 Electrical Requirements
Power input, rails, currents, interfaces, sensing accuracy, etc. ...
4.3 Environmental and Reliability Requirements
Operating ranges, expected lifetime, handling constraints, safety/compliance. ...
5. Constraints
Hard limits that shape the design choices. ...
5.1 Mechanical Constraints
Size, mounting, connector access, enclosure interactions. ...
5.2 Power and Thermal Constraints
Power source limits, dissipation ceilings, heat-sensitive components. ...
5.3 Layout / Implementation Constraints
High-level layout rules (keepouts, grounding intent, routing classes), without detailed PCB guidance. ...
5.4 Cost and Sourcing Constraints
Target cost range, availability requirements, preferred vendors/alternates policy. ...
6. Assumptions and Dependencies
What we assume is true, and what the design depends on (parts, standards, external systems). ...
7. Validation Criteria
What “done” means in terms of checks and evidence (not task lists). ...
7.1 Acceptance Tests
...
7.2 Review Checklist
...
Appendix (Optional)
Any supporting urls, analysis, datasets, or taxonomy notes that informed this spec. ...

    1. Executive Summary

    2. Goals and Non-Goals

    2.1 Goals

    2.2 Non-Goals

    3. System Overview

    3.1 Block Diagram

    4. Requirements

    4.1 Functional Requirements

    4.2 Electrical Requirements

    4.3 Environmental and Reliability Requirements

    5. Constraints

    5.1 Mechanical Constraints

    5.2 Power and Thermal Constraints

    5.3 Layout / Implementation Constraints

    5.4 Cost and Sourcing Constraints

    6. Assumptions and Dependencies

    7. Validation Criteria

    7.1 Acceptance Tests

    7.2 Review Checklist

    Appendix (Optional)

Documents

    Project Specification

    fmea-report

Assets

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USB-C Digital Compass Module with STM32, HMC5883L, TM1637 Display, and Enhanced Power Protection (JLCPCB-Ready)

Properties

90.2mm × 35.4mm

90.2

mm

Layer 2: GND plane; Layer 3: 3.3V plane

35.4

mm

Standard 4 Layer

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

12.8

mm

Pricing & Availability

Distributor

Qty 1

Controls