iot ir

void setup() {
// put your setup code here, to run once:
pinMode(A0, INPUT);//IR sensor to CN11
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
pinMode(2, OUTPUT);
pinMode(4, OUTPUT);
pinMode(13, OUTPUT);
}

void loop() {
// put your main code here, to run repeatedly:
if(digitalRead(A0)==1)
{
digitalWrite(0,HIGH);
digitalWrite(1,HIGH);
digitalWrite(2,HIGH);
digitalWrite(4,HIGH);
digitalWrite(13,LOW);

}
else
{
digitalWrite(0,LOW);
digitalWrite(1,LOW);
digitalWrite(2,LOW);
digitalWrite(4,LOW);
digitalWrite(13, HIGH);

}
}

---

#include <SD.h>

#include "DHT.h"
#define DHTPIN 4
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);
Serial.println("Humidity AND Temperature");
dht.begin();
}
void loop() {
delay(2000);
float h = dht.readHumidity();
float t = dht.readTemperature();
Serial.print("\nHumidity:");

Serial.print(h);

Serial.print("\n% Temperature :");

Serial.print(t);

Serial.print("*C");
}