Turn the LED exercises into the ArduinoPatterns library

.github/ISSUE_TEMPLATE/bug.yml

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+name: Bug report
+description: Report reproducible incorrect behavior.
+title: "[Bug]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: Please avoid including secrets or private information.
+  - type: input
+    id: version
+    attributes:
+      label: Library version
+      placeholder: 1.0.0
+    validations:
+      required: true
+  - type: input
+    id: board
+    attributes:
+      label: Board and core version
+      placeholder: Arduino Uno, Arduino AVR Boards 1.8.6
+    validations:
+      required: true
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Minimal sketch and reproduction steps
+      render: cpp
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected and actual behavior
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Security report
+    url: https://github.com/devkyato/Custom-Arduino-Libraries/security/advisories/new
+    about: Report vulnerabilities privately.

.github/ISSUE_TEMPLATE/feature.yml

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+name: Feature request
+description: Propose a focused, reusable improvement.
+title: "[Feature]: "
+labels: ["enhancement"]
+body:
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem
+      description: What project or teaching problem should this solve?
+    validations:
+      required: true
+  - type: textarea
+    id: proposal
+    attributes:
+      label: Proposed API or behavior
+    validations:
+      required: true
+  - type: dropdown
+    id: compatibility
+    attributes:
+      label: Required boards
+      multiple: true
+      options:
+        - AVR / Uno
+        - ESP32
+        - RP2040 / Pico
+        - Other
+    validations:
+      required: true

.github/PULL_REQUEST_TEMPLATE.md

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+## Summary
+
+<!-- What changes for library users? -->
+
+## Verification
+
+- [ ] Native tests pass (`pio test -e native`)
+- [ ] Relevant board environments compile
+- [ ] Documentation or examples are updated
+- [ ] `CHANGELOG.md` is updated for user-visible changes
+
+## Hardware
+
+<!-- List boards and wiring tested, or write "Not hardware-tested". -->

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly
+    groups:
+      actions:
+        patterns: ["*"]

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  native-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v7
+        with:
+          python-version: "3.14"
+      - run: python -m pip install "platformio==6.1.18"
+      - run: pio test -e native
+
+  compile:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        environment: [uno, esp32dev, pico]
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v7
+        with:
+          python-version: "3.14"
+      - run: python -m pip install "platformio==6.1.18"
+      - run: pio run -e ${{ matrix.environment }}
+
+  package:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v7
+        with:
+          python-version: "3.14"
+      - run: python tools/build_release.py
+      - uses: actions/upload-artifact@v6
+        with:
+          name: ArduinoPatterns
+          path: dist/ArduinoPatterns-*.zip

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags: ["v*"]
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: actions/setup-python@v7
+        with:
+          python-version: "3.14"
+      - name: Verify tag matches library version
+        shell: bash
+        run: |
+          version="$(sed -n 's/^version=//p' library.properties)"
+          test "${GITHUB_REF_NAME}" = "v${version}"
+      - run: python tools/build_release.py
+      - name: Publish GitHub release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: gh release create "$GITHUB_REF_NAME" dist/*.zip --generate-notes --verify-tag

.gitignore

@@ -39,3 +39,14 @@
 
 # debug information files
 *.dwo
+
+# PlatformIO and editor state
+.pio/
+.vscode/
+
+# Python tooling
+__pycache__/
+*.py[cod]
+
+# Release artifacts
+dist/

CHANGELOG.md

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+# Changelog
+
+All notable changes to ArduinoPatterns are documented here. The project follows
+[Semantic Versioning](https://semver.org/).
+
+## [1.0.0] - 2026-07-29
+
+### Added
+
+- `LedBank` for controlling up to 32 active-high or active-low outputs as a mask.
+- `LedAnimator` for rollover-safe, non-blocking timed sequences.
+- `PeriodicOutput` for independent periodic digital outputs.
+- Six Arduino IDE examples adapted from the repository's original exercises.
+- Native timing tests and compile checks for Uno, ESP32, and Raspberry Pi Pico.
+- Arduino IDE ZIP and PlatformIO installation metadata.
+
+[1.0.0]: https://github.com/devkyato/Custom-Arduino-Libraries/releases/tag/v1.0.0

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+## Our commitment
+
+We are committed to a welcoming, harassment-free learning environment regardless
+of experience level, background, identity, or ability.
+
+## Expected behavior
+
+- Be respectful, patient, and constructive.
+- Explain technical feedback without belittling people.
+- Welcome beginner questions and acknowledge honest mistakes.
+- Keep discussions relevant to the project.
+
+Harassment, personal attacks, discriminatory language, and publishing another
+person's private information are not acceptable.
+
+## Enforcement
+
+Report unacceptable behavior privately to the repository maintainer through the
+contact method on their GitHub profile. Reports will be reviewed fairly and kept
+confidential where possible. Maintainers may edit or remove content, reject
+contributions, or restrict participation when needed.
+
+This policy is adapted from the [Contributor Covenant 2.1][covenant].
+
+[covenant]: https://www.contributor-covenant.org/version/2/1/code_of_conduct/

CONTRIBUTING.md

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+# Contributing
+
+ArduinoPatterns is intended to be approachable for students and first-time
+open-source contributors.
+
+## Before you start
+
+1. Search existing issues before opening a new one.
+2. For behavior changes or new public APIs, open an issue first.
+3. Keep the library non-blocking and avoid heap allocation.
+
+## Local checks
+
+Install [PlatformIO Core](https://docs.platformio.org/en/latest/core/) and run:
+
+```sh
+pio test -e native
+pio run -e uno
+pio run -e esp32dev
+pio run -e pico
+python tools/build_release.py
+```
+
+Changes to timing logic need a native regression test. New features should include
+an Arduino example or update an existing one. Hardware-dependent changes should
+state the board and wiring used for verification.
+
+## Pull requests
+
+- Keep each pull request focused on one change.
+- Use clear commit messages and explain the user-visible result.
+- Update `CHANGELOG.md` for user-facing changes.
+- Do not commit `.pio`, editor state, or generated `dist` files.
+
+By participating, you agree to follow the [Code of Conduct](CODE_OF_CONDUCT.md).