AM2302 Sensor and set point programming

Hi everyone, first post for me into this forum and new too, to Arduino. I'm using a AM2302 humidity/temperature sensor and the arduino library with DHT tester example supply with it: GitHub - adafruit/DHT-sensor-library: Arduino library for DHT11, DHT22, etc Temperature & Humidity Sensors
Tha'st work fine, I can see thru the monitor the Temp. & Humidity numbers. My problem is I what to add on this tester things like:
If Temperature is greater than 20°C, turn on outputpin 8 HIGH(fans),else LOW! Same thing for humidity, If less than 50% turn on outputpin9 HIGH(humidifier)else LOW. Which variable to take or to create? I don't understand what is the variable to read and use, and after to manipulate it, and to do something whith it, when you using the library!

Code DHT Tester:
/ Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

#include "DHT.h"

#define DHTPIN 2 // what pin we're connected to

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

DHT dht(DHTPIN, DHTTYPE);

void setup() {
Serial.begin(9600);
Serial.println("DHTxx test!");

dht.begin();
}

void loop() {
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
float h = dht.readHumidity();
float t = dht.readTemperature();

// check if returns are valid, if they are NaN (not a number) then something went wrong!
if (isnan(t) || isnan(h)) {
Serial.println("Failed to read from DHT");
} else {
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
Serial.println(" *C");
}
}

Thank's in advance :slight_smile: !

Find the solution! :slight_smile:
See new code :

// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

#include "DHT.h"

#define DHTPIN 2 // what pin we're connected to

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

DHT dht(DHTPIN, DHTTYPE);
const int FanoutPin = 8; //Add by MikWin- set pin # for fanout

void setup() {
pinMode(FanoutPin, OUTPUT); //Add by MikWin- set output pin of the Fanout
Serial.begin(9600);
Serial.println("DHTxx test!");

dht.begin();
}

void loop() {
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
float h = dht.readHumidity();
float t = dht.readTemperature();

// check if returns are valid, if they are NaN (not a number) then something went wrong!
if (isnan(t) || isnan(h)) {
Serial.println("Failed to read from DHT");
} else {
Serial.print("Humidity: ");
Serial.print(h);
Serial.print(" %\t");
Serial.print("Temperature: ");
Serial.print(t);
Serial.println(" *C");
}
//Add by MikWin- If Temperature is greater then 24.5 °C then Fanout turn on, if not off
int ts = dht.readTemperature();
if (ts > 24.5) {
// turn Fanout on
digitalWrite(FanoutPin, HIGH);
}
else {
// turn Fanout offn
digitalWrite(FanoutPin, LOW);
}
}

There you go! (I believe I was too drunk yesterday nignt to solveit lol!!!) :~