GSM Based Smart Switch

This is a submission for the Built with Google Gemini: Writing Challenge What I Built with Google Gemini Farmers working in agricultural fields often need to switch water pumps multiple times a day, and sometimes even late at night. In many cases, they manage multiple fields located far away from each other, which makes manual operation inconvenient and time-consuming. To address this challenge, we built a GSM-sensor based water pump control system that enables remote switching of pumps using a 2G GSM network. The core idea was to eliminate the need for physical presence while ensuring reliable and secure operation. We used Gemini to brainstorm more possible applications, features, use case scenarios and last but not least safety and caution. The system consists of a GSM module for receiving SMS or call-based commands, a microcontroller that processes these commands, and a relay unit that controls the pump’s power supply. When a user sends a predefined text message of call from their m