Smart Greenhouse Monitoring & Control
DOI:
https://doi.org/10.15662/IJEETR.2026.0802106Keywords:
IoT, ESP32, LoRa RA-02, LoRa RA-02LoRa RA-02, MQ135, MQ7, ACS712, Solar Power, MySQL, PHP, Web Dashboard, Smart Agriculture, , Fan Control, Telegram BotAbstract
This paper presents a Smart Greenhouse Monitoring & Control System designed to automate real-time environmental monitoring using Internet of Things (IoT) technology. The system integrates seven sensors to continuously measure temperature, humidity, soil moisture, gas concentration (CO and air quality), light intensity, voltage, and current inside the greenhouse. An ESP32 microcontroller collects sensor data and transmits it using the LoRa RA-02 communication module (433 MHz), enabling long-distance wireless communication up to 2 km with minimal power consumption. The received data is forwarded to a web server via Wi-Fi, stored in a MySQL database, and displayed on a real-time responsive web dashboard. Automatic fan control operates in three modes: Manual ON, Manual OFF, and Auto (temperature-based hysteresis). Alert notifications are delivered via Telegram Bot and Email when sensor readings exceed configured thresholds. The entire system is powered by a 20W solar panel with 12V battery backup and PWM charge controller, making it energy-efficient and suitable for remote agricultural areas.
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