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DHT-11 Humidity Sensor

DHT-11 Humidity Sensor
DHT-11 Humidity Sensor DHT-11 Humidity Sensor DHT-11 Humidity Sensor
Product Code: SB-022
Availability: In Stock
Price: ₱150



DESCRIPTION

The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). 
 
 

FEATURES / SPECIFICATIONS

* 3 to 5V power and I/O
* 2.5mA max current use during conversion (while requesting data)
* Good for 20-80% humidity readings with 5% accuracy
* Good for 0-50 C temperature readings +- 2 C accuracy
* No more than 1 Hz sampling rate (once every second)
* 15.5mm x 12mm x 5.5mm
* 4 pins with 0.1" spacing

 

TUTORIALS / REFERENCE / DOCUMENTS

Sample Code Link
Library Link





* Sample fast upload code

#include <dht.h>

#define dht_dpin A0 //no ; here. Set equal to channel sensor is on

dht DHT;

void setup(){
  Serial.begin(9600);
  delay(300);//Let system settle
  Serial.println("Humidity and temperature\n\n");
  delay(700);//Wait rest of 1000ms recommended delay before
  //accessing sensor
}//end "setup()"

void loop(){
  //This is the "heart" of the program.
  DHT.read11(dht_dpin);

    Serial.print("Current humidity = ");
    Serial.print(DHT.humidity);
    Serial.print("%  ");
    Serial.print("temperature = ");
    Serial.print(DHT.temperature); 
    Serial.println("C  ");
  delay(800);//Don't try to access too frequently... in theory
  //should be once per two seconds, fastest,
  //but seems to work after 0.8 second.
}// end loop()


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