Food security remains a pressing global issue, exacerbated by rapid urbanization, population growth, and climate change. To address this, a smart and cost-effective greenhouse monitoring and control system is proposed, incorporating sensors, actuators, an LCD display, and microcontrollers. Utilizing a DHT22 sensor for temperature and humidity monitoring, and NodeMCU as the primary microcontroller, the system also employs a fan and heater to maintain optimal conditions. Continuous environment monitoring is enabled through internet connectivity, with data transmission and storage on the ThingSpeak cloud, allowing real-time visualization via web or mobile app. This automated system ensures dynamic and continuous maintenance of the greenhouse environment, promoting enhanced crop yields and quality while being easy to deploy and manage​ Smart Greenhouse Monitor.

OBJECTIVES:

1. To design and implement a low-cost, sustainable smart greenhouse monitoring and control system.
2. To utilize IoT technology for real-time monitoring and automatic adjustment of greenhouse conditions.
3. To enhance food security by improving crop yields and quality through optimized environmental control.
4. To facilitate remote access and control of greenhouse conditions via web and mobile applications​ Smart Greenhouse Monitor.

THE MAJOR BUILDING BLOCKS FOR THIS PROJECT:

1. NodeMCU
2. DHT22
3. LCD display
4. Relay

Block Diagram:

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