# Page Not Found

The URL `tutorials/gpio/connect-a-comparative-coin-mechanism-to-a-raspberry-pi-all-versions` does not exist.

You might be looking for one of these pages:
- [Connect a Comparative Coin Mechanism to a Raspberry Pi (all versions)](https://recalbox.gitbook.io/documentation/tutorials/controllers/gpio/connect-a-comparative-coin-mechanism-to-a-raspberry-pi-all-versions.md)
- [Analog audio output on Pi Zero](https://recalbox.gitbook.io/documentation/tutorials/audio/analog-audio-output-on-pi-zero.md)
- [Rotary encoder via GPIO (Digital Volume Control)](https://recalbox.gitbook.io/documentation/tutorials/audio/rotary-encoder-via-gpio-digital-volume-control.md)
- [Connecting your recalbox to a CRT with composite](https://recalbox.gitbook.io/documentation/tutorials/video/crt/connecting-your-recalbox-to-a-crt-with-composite.md)
- [Connecting your Recalbox to a CRT with HDMI and SCART](https://recalbox.gitbook.io/documentation/tutorials/video/crt/connecting-your-recalbox-to-a-crt-with-hdmi-and-scart.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://recalbox.gitbook.io/documentation/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://recalbox.gitbook.io/documentation/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/documentation/tutorials/controllers/gpio/connect-a-comparative-coin-mechanism-to-a-raspberry-pi-all-versions.md`)
- Use `Accept: text/markdown` header for content negotiation