IOT Based Gas Level Detection and Automatic Booking through GSM based Message Alert System

Abstract: LPG is a common fuel for cooking worldwide due to its affordability, accessibility, and efficiency. This paper explores an IoT-based system designed to monitor and display the LPG level in household cylinders while also enabling automatic cylinder ordering and gas leakage detection. The system utilizes an HX711 load sensor connected to an Arduino to measure the real-time LPG level. A GSM module sends SMS alerts to users and automatically places an order for a new cylinder by dialing a pre-registered booking number when the gas level drops below 1000 grams. Additionally, an MQ-2 gas sensor detects leaks, enhancing house hold safety. The current LPG level is continuously displayed on an LCD, allowing users to track usage from the date of installation. By providing timely notifications, the system helps prevent issues such as last-minute ordering delays. Furthermore, gas leak detection ensures a safer cooking environment by reducing the risk of accidents caused by leaks