Watch Video Demonstration Carefully Till End -- Temperature and Humidity Controller For Incubator
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Project Abstract and Block Diagram Link --► http://svsembedded.com/Temperature_and_Humidity_Controller_For_Incubator.php
Hardware components list:
1. ARDUINO
UNO R3---- https://amzn.to/32uockl
2. 9V
1A DC Power supply---https://amzn.to/2QwQmpn
3. Lcd
16x2 Display----- https://amzn.to/2YEHSB7
4. Single
Channel 5v Relay-- https://amzn.to/3gCgSIm
5. Cooling
Fan 5/12VDC----https://amzn.to/3jkNfwW
6. DHT11
Temperature and Humidity Sensor--- https://amzn.to/2EvSxah
7. SG
90 Micro Servo Motor--- https://amzn.to/3b35pAy
8. 2
Pin Tactile Switch micro--https://amzn.to/3b5m5Yi
SCHEMATIC DIAGRAM:
FINAL SOFTWARE CODE:
#include <LiquidCrystal.h>
#include <Servo.h>
#include <dht11.h>
dht11 DHT;
#define DHT11_PIN 4
const int ok = A1;
const int UP = A2;
const int DOWN = A3;
const int bulb = 3;
const int vap = 6;
const int rs = 8;
const int en = 9;
const int d4 = 10;
const int d5 = 11;
const int d6 = 12;
const int d7 = 13;
int ack = 0;
int pos = 0;
int sec = 0;
int Min = 0;
int hrs = 0;
int T_threshold = 30;
int H_threshold = 60;
int SET = 0;
int Direction = 0;
boolean T_condition = true;
boolean H_condition = true;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
Servo motor;
void setup()
{
pinMode(ok, INPUT);
pinMode(UP, INPUT);
pinMode(DOWN, INPUT);
pinMode(bulb, OUTPUT);
pinMode(vap, OUTPUT);
digitalWrite(bulb, LOW);
digitalWrite(vap, LOW);
digitalWrite(ok, HIGH);
digitalWrite(UP, HIGH);
digitalWrite(DOWN, HIGH);
motor.attach(A4);
motor.write(pos);
lcd.begin(16, 2);
Serial.begin(9600);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Temperature &");
lcd.setCursor(0,1);
lcd.print("Humidity ");
delay (3000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Controller For");
lcd.setCursor(0,1);
lcd.print("Incubator");
delay (3000);
lcd.clear();
Serial.println(" Temperature and Humidity Controller For Incubator");
}
void loop()
{
if (SET == 0)
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Set Temperature:");
lcd.setCursor(0, 1);
lcd.print(T_threshold);
lcd.print(" *C");
while (T_condition)
{
if (digitalRead(UP) == LOW)
{
T_threshold = T_threshold + 1;
lcd.setCursor(0, 1);
lcd.print(T_threshold);
lcd.print(" *C");
delay(200);
}
if (digitalRead(DOWN) == LOW)
{
T_threshold = T_threshold - 1;
lcd.setCursor(0, 1);
lcd.print(T_threshold);
lcd.print(" *C");
delay(200);
}
if (digitalRead(ok) == LOW)
{
delay(200);
T_condition = false;
}
}
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Set Humidity:");
lcd.setCursor(0, 1);
lcd.print(H_threshold);
lcd.print("%");
delay(100);
while (H_condition)
{
if (digitalRead(UP) == LOW)
{
H_threshold = H_threshold + 1;
lcd.setCursor(0, 1);
lcd.print(H_threshold);
lcd.print("%");
delay(100);
}
if (digitalRead(DOWN) == LOW)
{
H_threshold = H_threshold - 1;
lcd.setCursor(0, 1);
lcd.print(H_threshold);
lcd.print("%");
delay(200);
}
if (digitalRead(ok) == LOW)
{
delay(100);
H_condition = false;
}
}
SET = 1;
}
ack = 0;
int chk;
chk = DHT.read(DHT11_PIN); // READ DATA
switch (chk)
{
case DHTLIB_OK:
//Serial.print("OK,\t");
break;
case DHTLIB_ERROR_CHECKSUM:
//Serial.print("Checksum error,\t");
ack = 0;
break;
case DHTLIB_ERROR_TIMEOUT:
//Serial.print("Time out error,\t");
ack = 0;
break;
default:
//Serial.print("Unknown error,\t");
break;
}
// DISPLAT DATA
Serial.print("DHT11, \t");
Serial.print(DHT.temperature,1);
Serial.print(",\t");
Serial.println(DHT.humidity,1);
delay(100);
if (ack == 0)
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Temp:");
lcd.print(DHT.temperature);
lcd.setCursor(0, 1);
lcd.print("Humidity:");
lcd.print(DHT.humidity);
delay(500);
if (DHT.temperature >= T_threshold)
{
delay(500);
if (DHT.temperature >= T_threshold)
{
digitalWrite(bulb, LOW);
}
}
if (DHT.humidity >= H_threshold)
{
delay(500);
if (DHT.humidity >= H_threshold)
{
digitalWrite(vap, HIGH);
}
}
if (DHT.temperature < T_threshold)
{
delay(500);
if (DHT.temperature < T_threshold)
{
digitalWrite(bulb, HIGH);
}
}
if (DHT.humidity < H_threshold)
{
delay(500);
if (DHT.humidity < H_threshold)
{
digitalWrite(vap, LOW);
}
}
sec = sec + 1;
if (sec == 3)
{
sec = 0;
Min = Min + 1;
}
if (Min == 3)
{
Min = 0;
hrs = hrs + 1;
}
if (hrs == 3 && Min == 0 && sec == 0)
{Serial.println(" ROTATING FORWARD ");
for (pos = 0; pos <= 180; pos += 1)
{
motor.write(pos);
delay(25);
}
}
if (hrs == 6 && Min == 0 && sec == 0)
{Serial.println(" ROTATING BACKWARD ");
hrs = 0;
for (pos = 180; pos >= 0; pos -= 1)
{
motor.write(pos);
delay(25);
}
}
}
if (ack == 1)
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("No Sensor data.");
lcd.setCursor(0, 1);
lcd.print("System Halted.");
digitalWrite(bulb, LOW);
digitalWrite(vap, LOW);
}
delay(500);
}
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SVSEMBEDDED - 9491535690 / 7842358459
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