The sensor comes with a dedicated ntc to measure temperature and an 8bit. Temperature and humidity measurement with sensor dht11. The sensor dht11 can measure temperature and humidty in a room. Etc2, alldatasheet, datasheet, datasheet search site for electronic components and. This little sensor looks an awful lot like the popular dht11 dht22 temperature and humidity sensors, but unlike classic. Its sensing elements is connected with 8bit singlechip computer every sensor of this model is temperature compensatedand calibrated in accurate calibration chamber and the. Dht12 with a single bus, and standards i 2c two kinds of. Resisitivetype humidity and temperature modulesensor. Its technology ensures high reliability and excellent longterm stability. How to set up the dht11 humidity sensor on an arduino. The dht11 sensor can recover to the calibrated status gradually when it gets back to the normal operating condition and works within its range. So, while this sensor does seem to work, its not recommended for anything where you care.
You can do this by reading the temperature property which returns temperature in degrees celsius. Dht11 datasheet pdf pinout humidity and temperature sensor. Drawing of sht1x sensor packaging, dimensions in mm 1mm 0. It uses a dedicated digital modules capture technology and the temperature and humidity sensor technology to ensure that products with high reliability and excellent longterm stability. The dht11 uses an internal thermistor and a capacitive humidity sensor to determine environment conditions, an internal chip is responsible for converting readings to a serial digital signal.
Applying the dht11 sensor beyond its working range stated in this datasheet can result in 3%rh signal shiftdiscrepancy. At this point youre all set and ready to start reading the temperature and humidity. It applys exclusive digitalsignalcollectingtechnique and humidity sensing technology, assuring its reliability. Dht11 datasheet, dht11 pdf, dht11 data sheet, dht11 manual, dht11 pdf, dht11.
The humidity sensing element consists of two electrodes with a moisture holding substrate in between. High precision capacitive type full range temperature compensated relative humidity and temperature measurement c alibrated digital signal o utstanding longterm stability e xtra components not needed l ong transmission distance, up to 100 meters. The dht11 or dht22am2302 sensor is connected in the same way as before. Dht11 sensor interfacing with pic16f877a microcontroller.
The sensor comes with a dedicated ntc to measure temperature and an 8bit microcontroller to output the values of temperature and humidity as serial data. Dht22 utilizes exclusive digital signal collecting technique and humidity sensing technology and can ouptut calibrated digital signal. The dht11 sensor is compatible with most of the popular microcontroller development boards, like arduino. Temperature humidity module, dht11 datasheet, dht11 circuit, dht11 data sheet. Dht11 datasheet, dht11 pdf, dht11 pinout, equivalent, replacement humidity and temperature sensor sunrom, schematic, circuit, manual. It utilizes exclusive digitalsignalcollectingtechnique and humidity sensing technology, assuring its reliability and stability. When power is supplied to sensor, dont send any instruction to the sensor within one second to pass unstable status. This dht11 temperature and humidity sensor is a composite sensor which contains a calibrated digital signal output of the temperature and humidity. Dht12 digital temperature and humidity sensor is a calibrated digital output record of temperature and humidity, dht11 the upgrade product. Pdf dht11 datasheet, dht11 fiche technique, microbot humidity and temperature digital sensor, equivalent, fonction. Nov 04, 2016 this module consist of a dht11 digital humidity and temperature sensor and a 1 k. Ks0034 keyestudio dht11 temperature and humidity sensor. Pdf dht11 datasheet, dht11 fiche technique, aosong temperature and humidity module, equivalent, fonction.
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. A highperformance 8bit microcontroller is connected. The temperature is measured using a negative temperature coefficient thermistor ntc, and the relative humidity is measured using a capacitive sensor. Here is a tutorial on how to retrive the sensor measurement with a arduino board. Publishes the technical specifications of the product data sheet shall prevail. Dht11 temperature and humidity module open impulse. The dht11 uses just one signal wire to transmit data to the arduino. Dht11 humidity and temperature sensor the dht11 is a basic, lowcost digital temperature and humidity sensor. Thats not impossible but if one sensor fails it is a major task to find the new identity and write it into the code not possible if you dont know code and havent an ide.
Applicationspecific digital temperature and humidity sensor module and semiconductor, ensure high reliability and excellent longterm stability. Please refer to 3 of conditions minimum typical maximum. Dht11 datasheet, dht11 pdf, dht11 data sheet, dht11 manual, dht11 pdf, dht11, datenblatt, electronics dht11, alldatasheet, free, datasheet, datasheets, data sheet. The analog port will be used as the digital which will not occupy the original digital port of the arduino. Those sensing elements are precalibrated and the output is provided as a digital signal. 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. Dht11 is a commonly used 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. These sensors are very basic and slow, but are great for hobbyists who want to do some basic data logging. Aug 01, 2016 dht22 datasheet pdf sensor module, dht22 datasheet, dht22 pdf, dht22 pinout, dht22 data, circuit, ic, manual, substitute, parts, schematic, reference.
I have a dht11 reading internal humidity which produces a temperature reading simply. Dht22 digital temperature and humidity sensor is designed for analog sensor interfaces. Were sorry but dcfrontend doesnt work properly without javascript enabled. Each dht11 sensor is strictly calibrated in the laboratory that is extremely. Dht11 digital temperature and humidity sensor is a composite sensor contains a.
Datasheet sht1x sht10, sht11, sht15 humidity and temperature sensor ic fully calibrated digital output low power consumption excellent long term stability smd type package reflow solderable dimensions figure 1. Dht11, temperature sensor, capacitive sensor manufacturer supplier in china, offering dht11 digital temperature and humidity sensor capacitive sensor, mlx90614esfdci mlx90614esfdci000tu infrared digital temperature sensor, ax3117esa ax3117ab stepdown switching regulator with pwmcontrol and so on. Dht11dht22 sensors with arduino tutorial 2 examples. Datasheet search engine for electronic components and semiconductors. Temperature and humidity module dht11 product manual. Relative humidity sensor hs 1100 hs 1101 based on a unique capacitive cell, these relative humidity sensors are designed for high volume, cost sensitive applications such as office automation, automotive cabin air control, home appliances, and industrial process control systems. Dht11, dht22 and am2302 sensors adafruit industries. Dht11 datasheetpdf list of unclassifed manufacturers.
Temperature and humidity module department of electrical and. The sensor contains an ntc negative temperature coefficient temperature sensor, a resistivetype humidity sensor and an 8bit microcontroller to convert the analog signals from these sensors and produce a digital output. Dht11 is a digital sensor consisting of two different sensors in a single package. Raspberry pi dht11 humidity and temperature sensor interface. This sensor includes a resistivetype humidity measurement. A 10k ohm pullup resistor is needed between the signal line and 5v line to make sure the signal level stays high by default see the datasheet for more info. How do dht11 and dht22am2302 temperature and humidity sensors work. It can be easily interfaced with pic microcontroller by using only one inputoutput pin.
If you open up a dht11 or dht22am2302 sensor, you will see that it contains two sensing elements. Contribute to adidaxdht11 development by creating an account on github. Dht22 capacitive humidity sensing digital temperature and humidity module is one that contains the compound has been calibrated digital signal output of the temperature and humidity sensors. China dht11 digital temperature and humidity sensor. Applying the dht11 sensor beyond its working range stated in this datasheet can. The sensor comes with a dedicated ntc to measure temperature and an 8bit microcontroller to. The lines of the sensor which can transform the analog function to digital that can be use on digital port. This module is based on dht11, a high performance temperature and humidity sensor, ensuring high reliability and excellent stability. We have two versions of the dht sensor, they look a bit similar and have the. In the case of two ds18b20 sensors they have to be identified in order to assign them. The datasheet mentions it has 3% humidity accuracy and 0.
So, while this sensor does seem to work, its not recommended for anything where you care about any. Well cover the lowercost dht11 as well as the dht22 and am2302. In this tutorial, i will show you how to interface dht11 humidity sensor with pic microcontroller and how to measure temperature and humidity with dht11 sensor. Within the warranty period, the product was confirmed that. One capacitor valued 100nf can be added between vdd and gnd for wave filtering. Feb 19, 2018 the sensor dht11 can measure temperature and humidty in a room. When you look at the datasheet of the dhtxx sensors, you will see that they measure the relative humidity rh of the air and not the absolute humidity. Dht11 digital temperature and humidity sensor is a calibrated digital signal output of the temperature and humidity combined sensor. Dht11 datasheet pdf pinout humidity and temperature. Its fairly simple to use, but requires careful timing to grab data. This module consist of a dht11 digital humidity and temperature sensor and a 1 k. This board is a breakout board for the dht11 sensor and gives a digital output that is.
231 1590 1194 1157 950 1267 1075 965 905 478 74 1262 461 1485 122 1216 845 1345 1525 1204 119 154 125 1008 344 943 582 680 564 915 654 95 554 1314