Datasheet

IDUINO for Maker’s life

www.openplatform.cc

Temperature and Humidity Module(SE052)

1．Introduction

DHT11 digital temperature and humidity sensor is a composite Sensor contains a

calibrated digital signal output of the temperature and humidity. Application of a

dedicated digital modules collection technology and the temperature and humidity

sensing technology, to ensure that the product has high reliability and excellent long-

term stability. The sensor includes a resistive sense of wet components and an NTC

temperature measurement devices, and connected with a high-performance 8-bit

microcontroller.

The Module’s feature as below:

Feature

Value

Model No.

DTH11

Voltage

5V DC

Temperature Range

0~50℃

Humidity Range

20~90%

Accuracy

+/- 0.2℃, +/- 5%

2.Pinout

Description

“S”

Analog output pin, real-time output

voltage signal

“-”

Gnd

“+”

Vcc(reference voltage:5V DC)

3.Example

Here is a example to show the real-time temperature and humidity of environment, if

you have another LCD screen to be connected, that would be better fun.

The connection as below:

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IDUINO for Maker’s life Temperature and Humidity Module(SE052) 1．Introduction DHT11 digital temperature and humidity sensor is a composite Sensor contains a calibrated digital signal output of the temperature and humidity. Application of a dedicated digital modules collection technology and the temperature and humidity sensing technology, to ensure that the product has high reliability and excellent longterm stability.
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IDUINO for Maker’s life ******Code begin****** 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 post while (digitalRead (DHpin) == HIGH); // data '1 ', wait for the next one receiver } } return
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IDUINO for Maker’s life delayMicroseconds (40); // Wait for DHT11 response pinMode (DHpin, INPUT); while (digitalRead (DHpin) == HIGH); delayMicroseconds (80); // DHT11 response, pulled the bus 80us if (digitalRead (DHpin) == LOW); delayMicroseconds (80); // DHT11 80us after the bus pulled to start sending data for (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 a