Published Paper Details:

Inefficient manual irrigation practices in the agricultural sector often lead to significant water wastage, which can cause excessive soil moisture and damage to crops. The integration of automated control systems is crucial for enhancing operational efficiency and productivity. This paper presents the design and implementation of a wireless load control system utilizing Dual-Tone Multiple Frequency (DTMF) technology to automate agricultural irrigation. The system allows a user to remotely control water pumps and lamps via a mobile phone by transmitting DTMF tones during a phone call. These tones are decoded by a DTMF decoder (MT8870) and processed by an Arduino Uno microcontroller, which actuates the connected loads through a 4-channel relay module. A single-phase distribution board, equipped with appropriate protection devices like a Residual Current Circuit Breaker (RCCB) and Miniature Circuit Breakers (MCB), was constructed to safely power the loads. The system was successfully tested, demonstrating reliable control over a significant geographical range, with a successful signal reception recorded from over 400 km away. The results confirm that this DTMF-based system provides a robust, cost-effective, and scalable solution for remote agricultural automation, with potential applications in home and industrial automation.