International Research Journal of Education and Technology

This paper presents an autonomous smart irrigation system driven by a microcontroller unit. By employing sensors to measure soil moisture, temperature, and humidity levels, the system intelligently manages irrigation through control of a water pump and solenoid valves. The setup supports remote access, scheduling, and real-time notifications via integration with communication platforms. Its core objective is water conservation while maintaining ideal soil moisture, ultimately enhancing crop yield, reducing operational costs, and promoting sustainable agricultural practices. Powered by a 9–12V DC supply, the system uses soil probes to assess moisture. When dry soil conditions are detected, the micro controller activates a relay to start irrigation. This smart setup reduces human intervention, increases efficiency in water use, and is economically beneficial for modern farming.