# Demeter > ESP32-based hydroponics monitoring and automation - [Page not found](https://demeter.scurry.io/404/): The page you're looking for doesn’t exist or has moved. Check the URL, use the navigation to browse sections, or return to the homepage. - [Privacy Policy](https://demeter.scurry.io/privacy/): Learn how we collect, use, and protect your personal data, what rights you have over your information, and how to contact us with questions. - [Blog](https://demeter.scurry.io/blog/): Read product updates, release highlights, and practical tips that explain what’s new, why it matters, and how to get the most value from this project. - [Docs](https://demeter.scurry.io/docs/): Browse guides and reference documentation that explain how to use this site’s features, configure Doks, and publish clear, user-focused content. ## Blog > Read product updates, release highlights, and practical tips that explain what’s new, why it matters, and how to get the most value from this project. - [Example Post](https://demeter.scurry.io/blog/example-post/): Learn how to write clear, structured product update posts that explain what changed, why it matters, and how users can successfully adopt new features. ## Docs > Browse guides and reference documentation that explain how to use this site’s features, configure Doks, and publish clear, user-focused content. - [Sensors](https://demeter.scurry.io/docs/sensors/): Find detailed, structured reference pages that explain concepts, configuration options, and behavior so you can quickly look up precise information as you work. ### Sensors > Find detailed, structured reference pages that explain concepts, configuration options, and behavior so you can quickly look up precise information as you work. - [BH1750](https://demeter.scurry.io/docs/sensors/bh1750/) - [DS18B20](https://demeter.scurry.io/docs/sensors/ds18b20/) - [SHT4x](https://demeter.scurry.io/docs/sensors/sht4x/)