{"id":1078,"date":"2025-04-20T10:00:00","date_gmt":"2025-04-20T09:00:00","guid":{"rendered":"https:\/\/mazennotes.com\/articles\/project\/environmental-monitoring-system\/"},"modified":"2025-04-20T10:00:00","modified_gmt":"2025-04-20T09:00:00","slug":"environmental-monitoring-system","status":"publish","type":"fw-portfolio","link":"https:\/\/mazennotes.com\/de\/articles\/project\/environmental-monitoring-system\/","title":{"rendered":"Environmental Monitoring System (Flutter &amp; BLE)"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><em>January 2025 \u2013 April 2025<\/em><\/p>\n\n<p class=\"wp-block-paragraph\">A cross-platform Flutter application for monitoring and controlling environmental sensor hardware over Bluetooth Low Energy (BLE).<\/p>\n\n<h3 class=\"wp-block-heading\">Key Achievements<\/h3>\n\n<ul class=\"wp-block-list\"><li>Built a real-time dashboard with live charts for gas concentration, temperature, particulate matter, VOC index and CO levels.<\/li><li>Implemented robust data logging using SQLite for local storage and Firebase for cloud synchronisation.<\/li><li>Engineered device management features including OTA firmware updates and step-by-step sensor calibration workflows over BLE.<\/li><li>Developed a comprehensive notification system for critical thresholds (e.g. CO &gt; 50 ppm) and automated periodic summaries.<\/li><li>Integrated security features such as end-to-end encryption (E2EE) for BLE data and multi-factor authentication (2FA).<\/li><li>Implemented energy management strategies including battery monitoring and low-power modes for connected hardware.<\/li><\/ul>\n\n<h3 class=\"wp-block-heading\">Technical Highlights<\/h3>\n\n<ul class=\"wp-block-list\"><li>Flutter \/ Dart (cross-platform)<\/li><li>BLE (GATT, OTA updates)<\/li><li>Firebase Auth &amp; cloud sync<\/li><li>SQLite (local data persistence)<\/li><li>Real-time analytics and forecasting<\/li><li>E2EE security and 2FA<\/li><\/ul>","protected":false},"featured_media":0,"template":"","fw-portfolio-category":[78,76],"class_list":["post-1078","fw-portfolio","type-fw-portfolio","status-publish","hentry","fw-portfolio-category-embedded-iot","fw-portfolio-category-mobile-apps"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Flutter app for BLE environmental sensors: live gas, CO, VOC and PM dashboards, OTA firmware updates, SQLite and Firebase logging, E2EE and 2FA security.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/mazennotes.com\/de\/articles\/project\/environmental-monitoring-system\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"de_DE\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Mazen Alhomsi - Software Engineer - Bring Your Ideas to Life\" \/>\n\t\t<meta 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