AgroSense is an IoT-based crop monitoring system designed to capture real-time agrometeorological data through a distributed sensor network. The platform consists of solar-powered slave nodes that gather environmental variables from the field and transmit them via ZigBee to a master station with internet connectivity. Data is published online using 3G communication for remote access. The system includes signal conditioning, software filters, early warning protocols, and battery management features. Originally developed to support climate adaptation strategies in rice farming in Colombia’s Tolima region, it serves as a foundational model for low-cost, open-field environmental monitoring.