Most Accurate Humidity Sensor For Arduino

These sensors contain a chip that does analog to digital conversion and spit out a digital signal with the temperature and humidity.

Most accurate humidity sensor for arduino.

The dht22 sensor also known as the am2302 reference and his little brother the dht11 are temperature and humidity sensors. In this example you will learn how to use this sensor with arduino uno. Because different precisions are to be achieved their manufacturing costs vary greatly and their selling prices vary widely. At a price of 41 95 on robotshop the sensor comes fully calibrated and with 2 wire digital interface.

Earlier this week i wrote an article about how to use the dht22 am2302 temperature and humidity sensor with interrupts on an arduino. The dht11 is a digital temperature sensor that measures temperature and relative humidity. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air and sends a digital signal on the data pin. Soil moisture sensor arduino compatible for plant uses oxidation proof infrared thermometer module cost efficient high sensitivity long range easy to be embedded non contact sht1x humidity and temperature sensor high end heavy duty sensor quick response high reliability and stability auto sleep low power consumption.

It s perfect for remote weather stations home environmental control systems and farm or garden monitoring systems. Sht15 is a precise humidity and temperature sensor designed to work in environments with greater fluctuation in humidity and temperature. In this tutorial you will learn how to get the temperature and humidity recorded by the sensor. The dht22 am2302 sensor is able to measure temperatures from 40 to 125 c with an accuracy of 0 5 c and relative humidity levels from 0 to 100 with an accuracy of 2 5 at extremes to 10 and 90.

The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino. Humidity sensor dht22 the dht 22 also named as am2302 is a digital output relative humidity and temperature sensor. You can see that article here. After spending more time with the dht22 am2302 sensor i ve learned the humidity part of the sensor is not accurate at all.

In this tutorial i ll first go into a little background about humidity then i ll explain how the dht11 measures humidity. The accuracy of measurement is the most important index of the humidity sensor. Learn how to use temperature and humidity sensor with arduino how to connect dht11 or dht22 temperature and humidity sensor to arduino how to program arduino step by step.