DHT11 does not go over 2.5 C

[mihai27]

Initially DHT11 gives me around 1.50 C and 10% humidity. When I put my finger on sensor, these values go up. The problem is that after 2.50 C jumps at 1C and after 27% jumps at 1% and continue to go up.

[jim-p]

A wiring diagram and code would help us debug your problem.

[mihai27]

plus of sensor is connected at 5V
minus of sensor is connected at GND
OUT is connected at PIN 2

The code is the next one:

#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  dht.begin();
}

void loop() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Error: Failed to read from sensor!");
    delay(2000);
    return;
  }

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  delay(6000);
}

[jim-p]

Your code is not posted correctly
In the IDE click on Edit, then Copy for Forum, that will copy your code for the forum.
Then come back here and do a paste. You will see a difference on how the code is posted.

[mihai27]

#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  dht.begin();
}

void loop() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Error: Failed to read from sensor!");
    delay(2000);
    return;
  }

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  delay(6000);
}

[jim-p]

I don't see anything wrong with the wiring or the code.
The DHT11 module may be faulty