Dear Backers,
The Polverine boards have reached a significant milestone: they are now fully operational and performing at optimal levels. This achievement has paved the way for the development of an integrated firmware and software solution aimed at efficiently storing, managing, and analyzing data collected from various sensors.

A Comprehensive System Architecture

At the heart of this solution lies custom, open-source firmware designed specifically for Polverine devices. This firmware collects sensor measurements and transmits them using the ESP32-S3 module’s WiFi to an MQTT broker. From there, a NodeRed "Server Flow" monitors the broker’s message queue and systematically archives all incoming data in a MongoDB database.

The system also benefits from the latest SDK for the BMV080 sensor, which is now publicly available. This SDK enables the reading of particulate matter (PM) values for PM10, PM2.5, and PM1. The full range of sensor capabilities includes:

• Temperature
• Relative humidity
• Barometric pressure
• Volatile organic compounds (V.O.C.)
• Particulate matter 10 (PM10)
• Particulate matter 2.5 (PM2.5)
• Particulate matter 1 (PM1)

In addition to local sensor data, the server-side processing layer integrates with OpenWeatherMap’s API to enrich the dataset with external environmental parameters such as temperature, humidity, barometric pressure, wind speed, and cloud cover percentages.

Data Visualization Made Easy

To facilitate data analysis and visualization, a separate NodeRed "Client Flow" interface has been developed. This interface allows users to dynamically query the MongoDB repository and visualize data directly in a web browser. Users can select metrics from individual devices or compare data from multiple units, with flexible time filters enabling detailed examination of trends over configurable periods.

The browser-based approach ensures platform independence, making it easy to access and analyze data without requiring additional software installations.

Open Source Availability

All software components will be made publicly available through our GitHub repository. By releasing these tools as open source, we aim to foster collaboration and encourage further development within the community.

Our comprehensive solution not only simplifies sensor data management, but also provides powerful tools for visualization and analysis, making it an invaluable resource for environmental monitoring and research applications.

If you have any questions or want to share your ideas, feel free to reach out via the Ask a Question link on our campaign page, or connect with us on social media.

Thanks again for being part of this journey. More updates coming soon!

Best,
The Polverine Team