Automated Greenhouse Control System

Published Nov 26, 2021
 5 hours to build
 Intermediate

Automated greenhouse control system monitors and controls various aspect of plant care

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Components Used

Bluetooth Module HC-05
Bluetooth is a wireless communication protocol used to communicate over short distances. It is used for low power, low cost wireless data transmission applications over 2.4 – 2.485 GHz (unlicensed) frequency band.
1
Soil Moisture Sensor
Soil moisture sensor is used to measure the water content (moisture) in soil. It is used in agriculture applications, irrigation and gardening systems, etc.
1
LM35 Temperature Sensor
LM35 is a sensor which is used to measure temperature. It provides electrical output proportional to the temperature (in Celsius).
1
LDR -Photocell Photoresistor
LDR -Photocell, Photoresistor
1
Relay Module Single Channel
Relay Module Single Channel
1
LED 5mm
LED 5mm
2
ESP8266 WiFi Module
ESP8266 is a system on chip (SoC) which provides WIFI capability for embedded applications. This enables internet connectivity to embedded applications. ESP8266 modules are mostly used in Internet of Things(IoT) applications.
1
Description

 

Automated greenhouse control system monitors and controls various aspect of plant care such as 

  • Detecting low moisture content of soil and using water pump to compensate moisture level of soil.
  • Detecting light intensity and using artificial lights to compensate it.
  • Measuring higher or lower temperature and balancing temperature using a fan or heater

In a busy modern world, It is often hard to maintain and take regular care of plants simple task such as regular watering of plants can also be sometimes neglected but no worries this project is here to save the day. 

Also, in research labs it makes it easier to develop a suitable environment for much sensitive plants such as maintain proper light and temperature. 

Similarly in greenhouses and farms this can minimize the wastage of water by suppling the required water to crops this can also reduce the labor hours needed.

The user can easily monitor and make necessary changes needed with his/her smartphone.   

This project is based on Node-MCU and uses Bluetooth module HC-05 to act as a contact with smartphone, it uses 3 primary sensors:

  1. Temperature sensor (LM 35) to measure ambient temperature.
  2. Light dependent resistor to measure ambient light intensity.
  3. Soil moisture sensor with LM 393 comparator to measure water content in soil.

The main videos contain two LEDs and one relay the relay can be connected a water pump, the red LED denotes a fan or a heater unit and the green LED denotes an artificial light.

 

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