Mermaid Diagram Generator

Generate Mermaid diagrams from Arduino and embedded-system concepts without loading unnecessary detail up front.

Resources

• scripts/generate_diagram.py - CLI generator for diagram output
• references/diagram-templates.md - Mermaid templates by diagram type
• references/code-patterns.md - code-to-diagram extraction heuristics
• references/validation-checklist.md - rendering and syntax checks

When to Use

Use this skill when the request asks to:

• visualize a state machine
• turn code into a flowchart
• document timing or protocol sequences
• show FreeRTOS task relationships
• add a diagram to project documentation

Do not use it for tiny code snippets where a diagram adds no clarity.

Workflow

1. Identify the diagram type:
   • state flow -> open references/code-patterns.md
   • timing or protocol sequence -> open references/diagram-templates.md
   • task architecture -> open both code-patterns.md and diagram-templates.md
2. Prefer the simplest diagram that explains the behavior.
3. Use scripts/generate_diagram.py when the input is structured enough for automation.
4. Run through references/validation-checklist.md before presenting the final Mermaid output.

Verification

• Mermaid syntax parses without errors.
• The diagram uses the correct abstraction level for the request.
• State names, transitions, or signals match the source material exactly.
• The output is readable without reverse-engineering the code.

Integration

• Pair with freertos-patterns for task and synchronization diagrams.
• Pair with arduino-code-generator when a generated sketch also needs visual documentation.
• Pair with readme-generator when the diagram should ship in repository docs.

Shared Output Contract

Use the shared Arduino skill contract: state assumptions, required tools and versions, implementation steps, tests/evidence by proof stage, known limitations, and recovery/security notes.