Arduino Code Generator

Generate production-quality Arduino code snippets for sensors, actuators, communication, and embedded patterns.

Quick Start

Browse example sketches:

# See 9 production-ready examples in examples/ folder
ls examples/
# config-example.ino, filtering-example.ino, buttons-example.ino,
# i2c-example.ino, csv-example.ino, scheduler-example.ino,
# state-machine-example.ino, hardware-detection-example.ino,
# data-logging-example.ino

List available patterns:

uv run --no-project scripts/generate_snippet.py --list

Generate code for specific pattern and board:

uv run --no-project scripts/generate_snippet.py --pattern i2c --board esp32
uv run --no-project scripts/generate_snippet.py --pattern buttons --board uno --output button.ino

Interactive mode:

uv run --no-project scripts/generate_snippet.py --interactive

Target Gate

Read the shared contract and the board profile before selecting pins, APIs, or libraries. Keep board-specific branches isolated, check memory and peripheral constraints, and state whether the result has build proof only or also has upload, hardware, and system proof. The generator's board flag is a template selector, not evidence that the generated code works on a similar-looking board.

Resources

• examples/ - 9 production-ready example sketches (one per pattern category)
• examples/README.md - Detailed documentation for each example with wiring diagrams
• scripts/generate_snippet.py - CLI tool for code generation with 9 pattern templates
• scripts/verify_patterns.ps1 - Compile examples for UNO/ESP32/RP2040 (PowerShell)
• scripts/verify_patterns.sh - Compile examples for UNO/ESP32/RP2040 (bash)
• assets/workflow.mmd - Mermaid diagram of code generation workflow

Supported Patterns

Hardware Abstraction

• Multi-board config.h with conditional compilation
• Pin definitions for UNO/ESP32/RP2040
• Memory budget tracking

See patterns-config.md | Example: config-example.ino

Sensor Reading & Filtering

• ADC noise reduction (moving average, median, Kalman)
• DHT22, BME280, analog sensors
• Data validation and calibration

See patterns-filtering.md | Example: filtering-example.ino

Input Handling

• Software button debouncing
• Edge detection (PRESSED/RELEASED/LONG_PRESS)
• Multi-button management

See patterns-buttons.md | Example: buttons-example.ino

Communication

• I2C device scanning and diagnostics
• SPI configuration
• UART/Serial protocols
• CSV data output

See patterns-i2c.md and patterns-csv.md | Examples: i2c-example.ino, csv-example.ino

Timing & Concurrency

• Non-blocking millis() patterns
• Task scheduling without delay()
• Priority-based schedulers
• State machines

See patterns-scheduler.md and patterns-state-machine.md | Examples: scheduler-example.ino, state-machine-example.ino

Hardware Detection

• Auto-detect boards (UNO/ESP32/RP2040)
• SRAM usage monitoring
• Sensor fallback strategies
• Adaptive configuration

See patterns-hardware-detection.md | Example: hardware-detection-example.ino

Data Persistence

• EEPROM with CRC validation
• SD card FAT32 logging
• Wear leveling for EEPROM
• Buffered writes

See patterns-data-logging.md | Example: data-logging-example.ino

Code Generation Workflow

• Identify Pattern Type - Analyze user request to determine core pattern category
• Read Reference Documentation - Consult pattern-specific reference files for implementation details
• Generate Code - Create production-ready code following quality standards
• Provide Instructions - Include wiring diagrams and usage guidance
• Mention Integration - Suggest combinations with other patterns when relevant

Quality Standards & Rules

• Quality Standards - Compilation, timing, memory safety, and error handling requirements
• Board Optimization - UNO, ESP32, and RP2040 specific optimizations and features
• Common Pitfalls - Critical mistakes to avoid in Arduino development

Code Output Template

• Code Template - Standardized structure for generated Arduino sketches

Resources

• examples/ - 9 production-ready example sketches (one per pattern category)
• examples/README.md - Detailed documentation for each example with wiring diagrams
• scripts/generate_snippet.py - CLI tool for code generation with 9 pattern templates
• assets/workflow.mmd - Mermaid diagram of code generation workflow
• workflow/ - Step-by-step code generation process
• rules/ - Quality standards and board-specific optimizations
• templates/ - Code output templates and structure guidelines
• references/ - Detailed pattern documentation and API references
• references/README.md - Reference structure and formatting guide

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.