विभाग : FABLAB : Temperature and humidity sensor project for hydroponic

As requirement of Sanjay who is the DBRT (agriculture) student. I have made a small simple project of temperature and humidity sensor for hydroponic. I did proper connections of arduino, temperature humidity sensor and relay driver.

[Target: If the temperature less than 25⁰C then bulb will automatic start]

Material:

Sr. No.	Material Name	Qty.
1	Arduino board	1
2	Temperature and humidity sensor	1
3	Relay driver	1
4	Socket (plug)	1
5	2 pin	1
6	Wires
7	MDF Sheet

• Testing connections and Code :

• Programming code :

#include "DHT.h"

DHT dht;

void setup()

{

  Serial.begin(9600);

  Serial.println();

  Serial.println("Status\tHumidity (%)\tTemperature (C)\t(F)");

  pinMode(9,OUTPUT);

  dht.setup(2); // data pin 2

}

void loop()

{

  delay(dht.getMinimumSamplingPeriod());

 

  float humidity = dht.getHumidity();

  float temperature = dht.getTemperature();

  Serial.print(dht.getStatusString());

  Serial.print("\t");

  Serial.print(humidity, 1);

  Serial.print("\t\t");

  Serial.print(temperature, 1);

  Serial.print("\t\t");

  Serial.println(dht.toFahrenheit(temperature), 1);

  

 if(temperature<25)

 {

  digitalWrite(9,LOW);

 }

  else

  {

  digitalWrite(9,HIGH);

}

}

• Implemented and installed successfully