Example testing sketch for various dht humidity temperature sensors written by ladyada public domain.
Arduino temperature and humidity sensor code.
10k ohm pull up resistor.
Try changing the analog pin for the sensor in the code or unplug the sensor and plug it back into the analog pin that is used in the code.
Work fine dht code from.
The materials are here as follows.
I am using arduino huzzah feather for sht85 sensor.
The code that i have written records the temperature and humidity for all 3 sensors after every 3 seconds.
It is very inexpensive but it gives values of both temperature and humidity at a time.
The warmer the air is the more moisture it can hold so relative humidity changes with fluctuations in the temperature.
Dht11 and dht22 are sensors that we can use to measure temperature and humidity.
In this project we will use the ky 015 arduino dht11 temperature humidity sensor and display it to the arduino ide serial monitor.
It has a resistive humidity sensing component and a negative temperature coefficient ntc.
Dht11 digital temperature humidity sensor delivers temperatures between 0 c and 50 c and humidity between 0 to 100.
Include ethercard h ethernet interface mac address must be unique on the lan.
Display humidity and temperature on the serial monitor.
Before you can use the dht11 on the arduino you ll need to install the dhtlib library it has all the functions needed to get the humidity and temperature readings from the sensor.
The dht11 temperature and humidity sensor senses measures and regularly reports the relative humidity in the air.
They are similar to each other.
The dht11 data pin is connected with arduino digital io pin.
This project is really simple and shouldn t take us very long.
How to use the dht11 temperature and humidity sensor with an arduino.
An 8 bit mcu is also connected in it which is responsible for its fast response.
For instance i used a0 so you need to connect the sensor to the analog pin a0.
Hi use below code and usage the default dht h from arduino libraries.
Dht11 sensor is used to measure the temperature and humidity.
Dht11 humidity temperature sensor.
Include dht h dht dht.
Temperature and humidity readings are measured by the help of arduino uno and dht11 sensor.
Arduino reads the temperature and humidity at 2 second interval and sends to the serial port.
It measures both moisture and air temperature.
I have three such sensors connected to the huzzah with the adafruit tca 9548a multiplexer.