Add script to create a PDF file for each hardware platform

docs/.python-version

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+3.12

docs/README.md

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+# Universal Maker Sensor Kit Documentation
+
+This directory contains the documentation for the Universal Maker Sensor Kit, organized by platform (Arduino, ESP32, Raspberry Pi Pico, and Raspberry Pi).
+
+## Generating PDF Books
+
+The `make_pdfs.py` script generates separate PDF books for each platform.
+
+### Prerequisites
+
+1. **LaTeX Distribution** (required for PDF generation):
+   - **macOS**: `brew install --cask mactex-no-gui` or `brew install --cask basictex`
+   - **Ubuntu/Debian**: `sudo apt-get install texlive-latex-extra texlive-fonts-recommended`
+   - **Windows**: Install [MiKTeX](https://miktex.org/)
+
+2. **Python dependencies**: Managed by `uv` (already configured in `pyproject.toml`)
+
+### Usage
+
+#### Option 1: Run directly with uv
+```bash
+uv run python make_pdfs.py
+```
+
+#### Option 2: Run as installed script
+```bash
+uv run make-pdfs
+```
+
+#### Option 3: Run directly with Python (after installing dependencies)
+```bash
+python make_pdfs.py
+```
+
+### Output
+
+The script will create a `pdfs/` directory containing four PDF books:
+- `Arduino_Guide.pdf` - Complete Arduino tutorials
+- `ESP32_Guide.pdf` - Complete ESP32 tutorials
+- `PiPico_Guide.pdf` - Complete Raspberry Pi Pico tutorials
+- `RaspberryPi_Guide.pdf` - Complete Raspberry Pi tutorials
+
+### How It Works
+
+The script:
+1. Creates temporary build directories for each platform
+2. Copies the relevant documentation files and shared resources
+3. Generates a custom Sphinx configuration for PDF output
+4. Builds LaTeX files using Sphinx
+5. Compiles PDFs using pdflatex
+6. Saves the final PDFs to the `pdfs/` directory
+
+### Troubleshooting
+
+**Error: "pdflatex not found"**
+- Install a LaTeX distribution (see Prerequisites above)
+- Ensure `pdflatex` is in your PATH
+
+**Error: "Missing .sty file"**
+- Install additional LaTeX packages:
+  - macOS: The full MacTeX installation includes all packages
+  - Ubuntu/Debian: `sudo apt-get install texlive-latex-extra`
+
+**Build warnings**
+- Some warnings during PDF generation are normal (missing references, overfull boxes)
+- The script runs pdflatex twice to resolve cross-references
+
+## Building HTML Documentation
+
+To build the standard HTML documentation:
+
+```bash
+make html
+```
+
+The HTML files will be in `source/_build/html/`.