Smart Bin: A Smart Dustbin Solution for Smart Cities

As urban populations continue to grow, cities are facing increasing pressure to manage waste more efficiently. This paper introduces Smart Bin , an IoT-powered waste monitoring system designed to improve how waste is collected and handled in smart city environments. The system uses ultrasonic sensors paired with an ESP32 microcontroller to measure how full a bin is, sending real-time updates to the cloud using either Wi-Fi or GSM (SIM800) modules. A lightweight, responsive web interface built with Svelte/SvelteKit displays bin data such as fill level, location, and status, while Mapbox and Leaflet.js are used for map integration and route visualization. Alerts are automatically generated when bins reach certain thresholds, and data is synced through service like Ngrok and PocketBase. Although the current system focuses on real-time monitoring and efficient routing, it is designed to be scalable and ready for future upgrades, including automated route optimization. By combining affordability, modularity, and environmental focus, Smart Bin offers a practical step toward smarter, cleaner, and more sustainable cities.