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Arduino board: ESP8266, UNO
Arduino IDE version: 1.8.12
List the steps to reproduce the problem below (if possible attach a sketch or copy the sketch code in too): LIST REPRO STEPS BELOW

The problem is that the DHT22 seems to be showing a wildly different and much higher readings to the DHT11. In an average dry home office environment the DHT11 shows 17% while the DHT22 shows 65.1%. I have tried two different DHT22 units and library versions 1.3.10 as well as the later 1.4.0. Both have the same problem.

To reproduce the issue just connect both sensors and connect to the serial port for a printout of the readings for each sensor.

NOTE: I logged this earlier but it seems to have disappeared! Logging it again but apologies for any duplicate should it show up twice due to delay!

Sketch (for UNO):

`#include

// UNO

define DHTPIN22 12

define DHTPIN11 11

// ESP8266 //#define DHTPIN 0

// Sensor DHT dhtSensor11(DHTPIN11, DHT11); DHT dhtSensor22(DHTPIN22, DHT22);

float currentTemperatureDht22; float currentHumidityDht22;

float currentTemperatureDht11; float currentHumidityDht11;

void setup() { // put your setup code here, to run once:

// Setup serial port Serial.begin(115200);

// Enable sensors dhtSensor22.begin(); dhtSensor11.begin();

}

void loop() { // put your main code here, to run repeatedly:

// Read the sensor(s) currentTemperatureDht22 = dhtSensor22.readTemperature(); currentHumidityDht22 = dhtSensor22.readHumidity();

currentTemperatureDht11 = dhtSensor11.readTemperature(); currentHumidityDht11 = dhtSensor11.readHumidity();

// Print result to serial Serial.print(F("DHT22: ")); Serial.print("\t"); Serial.print(F("Temp (°C): ")); Serial.print(currentTemperatureDht22, 2); Serial.print("\t"); Serial.print(F("Humidity (%): ")); Serial.print(currentHumidityDht22, 2); Serial.println();

Serial.print(F("DHT11: ")); Serial.print("\t"); Serial.print(F("Temp (°C): ")); Serial.print(currentTemperatureDht11, 2); Serial.print("\t"); Serial.print(F("Humidity (%): ")); Serial.print(currentHumidityDht11, 2); Serial.println();

Serial.println();

delay(1000);

adafruit / DHT-sensor-library

DHT22 sensor showing abnormally high reading #170

define DHTPIN22 12

define DHTPIN11 11