Smart Agricultural Monitoring and Automated Irrigation System Using Internet of Things (IoT) Technology
Yogi Priyo Istiyono, Siti Rokhmanila, Ojak Abdul Rozak
Jurnal Otomasi Kontrol dan Instrumentasi
Urban Farm DB summary
Researchers developed and experimentally evaluated an IoT-based monitoring and automatic irrigation system for small-scale and urban farming, built around a NodeMCU ESP8266 microcontroller with capacitive soil moisture, soil pH, and DHT11 temperature sensors, transmitting data via Wi-Fi to the Blynk cloud platform with a smartphone interface and 16×2 LCD, and a relay-controlled 5V DC pump triggered by preset soil moisture thresholds. Validated against a reference instrument (ETP-302), the system showed average measurement errors of 3.4% for soil moisture, 4.1% for soil pH, and 2.8% for temperature, and irrigation activated within a dry-soil range of 430-520 ADC and stopped automatically once sufficient moisture was reached.