Imagine temperature and humidity being measured remotely in real-time without being physically inside the vinyl house. Even watering the crops or controlling the temperature can be done via remote control or automation. It measures the amount of sunshine to remotely control the desired amount of sunshine for the crops. This is a scenario that will inevitably happen in the era of the smart farm. This article provides an introduction to the devices that can be used in the smart farm. Agriculture is an incredibly difficult industry but let’s take the first step to farming smartly.


  1. Temperature/Humidity Sensor

Why do people make vinyl houses in modern agriculture? There are many reasons, but the main reason is to control the temperature and humidity. Crops are extremely sensitive to temperature and humidity so the vinyl house provides greater control of optimal conditions for the crops. In order to measure such conditions, we first need a sensor. The picture below shows the sensor, called DHT11, which can measure both temperature and humidity.

DHT 11

The link below shows an example of measuring temperature and humidity using an Arduino board and DHT11 sensor.


If these temperature/humidity sensors are properly installed inside and outside the vinyl house, it will help to better care for crops sensitive to temperature and humidity.


  1. Illuminance Sensor

Sunshine is just as important as temperature and humidity for crops, like strawberries, peppers, and sesame leaves because the amount and quality of crops vary depending on the amount of sunshine. One of the methods to measure the amount of sunshine is through an illuminance sensor shown below.


The link below shows an example code to measure the illuminance using the sensor and ARM mbed platform WIZwiki-W7500, and to operate LED lights when it falls below a certain value of illuminance.

If these illuminance sensors are properly installed inside and outside the vinyl house and the luminous material, in this case LED, is controlled, it will help to better care for crops sensitive to sunshine.


  1. Gas Sensor

The air also affects farming because each crop can handle varying concentrations of carbon monoxide and carbon dioxide. For example, when storing ginger, farmers need to have an accurate reading of how much gas is in the air to properly store them.

The gas sensor shown below can help you detect this.

The picture below shows a gas sensor, called MG811, which detects carbon dioxide.

이산화탄소 센서

Below link is an example of using MQ-2 gas sensor(LPG, butane, methane, alcohol detection sensor).


출처: [메카솔루션]

Source: [Mechasolution]


  1. Motor

Gathering information with using sensors will be needed an operation. The intuitive idea can be a motor. Motors are used in many fields, but the most important is control field. For example, a motor can be used to open the door of a greenhouse, and window from a house. Also, it is used in places such as ventilation and water pump.

The picture as below shows a water pump motor that can be used directly on the Arduino or ARM mbed platform. And the link is an example of using a pump motor.

워터 펌프


출처: [메카솔루션]

Source: [Mechasolution]


  1. Motion sensor

Farming security is very important when farming crops. You can see theft cases of agricultural products, oil, farm equipment, and so on. If all of the things that I mentioned above suddenly disappeared, the whole operation would be destroyed. The damage to crops caused by wild animals is the same. To protect against this, many install a camera for security, but there is another way – using a motion sensor.

The picture below is one of Arduino motion sensors, and the link shows the example of using PIR sensor.

PIR 센서



  1. Wireless Communication

To control these sensors, one must be connected to the Internet. It is more efficient to use wireless than wired communication due to inherent characteristics of a Smart Farm. Check out the link below to learn how to incorporate wireless communication into the farming operation.




In this article, we’ve looked at sensors that can be helpful to a Smart Farm and what they can do. Smart Farming can be easy as long as we connect to the cloud server via wireless communication and we can check and control the information in real-time through these sensors. This can be a solution to labor shortage, which will also lead to reduction in labor cost. Could this be the way to better crops at lower prices? I anticipate it carefully!