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DHT11 Temperature and Humidity Sensor (KY-15) Details

  • The best price of DHT11 Temperature and Humidity Sensor (KY-15) by TechDepot Egypt in Egypt is 0 EGP
  • Available payment methods are
    Cash on Delivery
  • Delivery fees are 35+ EGP, with delivery expected within 2-4 day(s)
  • The first appearance of this product was on Nov 30, 2016

Technical Specifications

Weight:5 g

TechDepot Egypt's Description

Description

DH11 Temperature & Humidity Sensor has excellent quality, fast response, anti-interference ability, low cost and other advantages. Single Wire serial interface that allows quick and easy system integration. Ultra-small size, low power consumption, signal transmission distance Up to 20 meters, making it to the class of applications and even the most demanding applications is the best choice.

DHT11 Temperature & Humidity Sensor Specifications

  • Supply voltage: 3.3 ~ 5.5V DC
  • Output: single-bus digital signal
  • Measuring range: Humidity 20-90% RH, Temperature 0 ~ 50 ℃
  • Accuracy: Humidity + -5% RH, temperature + -2 ℃
  • Resolution: Humidity 1% RH, temperature 1 ℃
  • Long-term stability: <± 1% RH / Year

Notes

  1. to avoid the use of the condensation conditions
  2. long-term storage temperature 10-40 ℃, humidity below 60%
  3. the use of power and ground connection to be correct, so as not to damage the sensor

Required Hardware Devices

  • Arduino controller × 1
  • USB data cable × 1
  • DHT 11 module × 1

Connecting

  • Arduino pin 8 –> Pin S module
  • Arduino GND –> Pin – module
  • Arduino +5 –> Pin Middle

Code

//KY015 DHT11 Temperature and humidity sensor int DHpin =8; byte dat [5]; byte read_data (){ byte data;for(int i =0; i <8; i ++){if(digitalRead (DHpin)== LOW){while(digitalRead (DHpin)== LOW);// wait for 50us delayMicroseconds (30);// determine the duration of the high level to determine the data is '0 'or '1'if(digitalRead (DHpin)== HIGH) data |=(1<<(7-i));// high front and low in the postwhile(digitalRead (DHpin)== HIGH);// data '1 ', wait for the next one receiver}}return data;}void start_test (){ digitalWrite (DHpin, LOW);// bus down, send start signal delay (30);// delay greater than 18ms, so DHT11 start signal can be detected   digitalWrite (DHpin, HIGH); delayMicroseconds (40);// Wait for DHT11 response   pinMode (DHpin, INPUT);while(digitalRead (DHpin)== HIGH); delayMicroseconds (80);// DHT11 response, pulled the bus 80usif(digitalRead (DHpin)== LOW); delayMicroseconds (80);// DHT11 80us after the bus pulled to start sending datafor(int i =0; i <4; i ++)// receive temperature and humidity data, the parity bit is not considered dat[i]= read_data ();   pinMode (DHpin, OUTPUT); digitalWrite (DHpin, HIGH);// send data once after releasing the bus, wait for the host to open the next Start signal}void setup (){ Serial.begin(9600); pinMode (DHpin, OUTPUT);}void loop (){ start_test (); Serial.print("Current humdity ="); Serial.print(dat [0], DEC);// display the humidity-bit integer; Serial.print('.'); Serial.print(dat [1], DEC);// display the humidity decimal places; Serial.println('%'); Serial.print("Current temperature ="); Serial.print(dat [2], DEC);// display the temperature of integer bits; Serial.print('.'); Serial.print(dat [3], DEC);// display the temperature of decimal places; Serial.println('C'); delay (700);}

DHT11 Temperature and Humidity Sensor (KY-15) Price insights and history

  • The cheapest price of DHT11 Temperature and Humidity Sensor (KY-15) in Egypt was 0 EGP from TechDepot Egypt within the past 77 months
  • The highest price of DHT11 Temperature and Humidity Sensor (KY-15) in Egypt was 30 EGP from TechDepot Egypt within the past 77 months
  • The price difference between the cheapest and highest price of DHT11 Temperature and Humidity Sensor (KY-15) in Egypt is 30 EGP from TechDepot Egypt within the past 77 months
  • The average price of DHT11 Temperature and Humidity Sensor (KY-15) in Egypt is 15 EGP from TechDepot Egypt within the past 77 months

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