Best Temperature/Humidity Sensor For Arduino? Accuracy Test

Are you looking for the best temperature and humidity sensor for arduino? If so, this video is for you.


I tested the most popular sensors available in the search for the best and I also provide example sketches for arduino to serve as a tutorial since I wrote a lot of comments explaining the code.

Sensors considered:
- DHT11
- DHT12
- DHT22/AM2302
- AM2320
- AM2322
- HDC1080
- BME280
- LM35DZ
- SI7021/SHT21/HTU21
- HTU21D
- SHT31

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Arduino sketches:

[erickcampos]

I came back to thank you for the tip about using a salt solution to create an environment with controlled humidity. This made me look for more information about this phenomenon, which until then was totally unknown to me. It was a fantastic dose of science and made me spend the night doing some really fun experiments.

[PhG]

Nice, well explained video ! Great job, thnxs for sharing ! Looking forward to see more... !

[davegonzales]

Thanks for the video, one question is I would like to see your setup as a whole,
How did you connect the sensor, oled, batttery used etc.... can you share that. I like the set up and would appreciate to see the entire circuit please.

[dwpetty]

Great video, what size resisters did you put between A4-5V and A5-5V ?

[mohammadr]

I think BME280 is a pressure sensor and the purpose of the combination with humidity and temperature part was for pressure error compensations regarding to this the hdc1080 is just humidity sensor and also in the humidity sensors the temperature sensor is for humidity error compensation!

[sergiourquijo]

Awesome video. Nice work and thanks for sharing. This ibformation is valuable for me hahahah

[Yuēhàn]

Hi, I have done the same tests using various sensors, The one I found most accurate was the SHT21 according to the manufactures datasheets its about the same specifications as the HDC1080

[jangAckman]

May I ask what the "problem" is with SHT21/31?

[sibinks]

Nice, video i have a question for you ! is there a difference between AM2315 & AM2305.

[pgmredstone]

thank you for the video. I don't understand what you exactly mean by calibrating the device. how do you adjust the delta that occurs after a while if want to use the device in production and do not know the actual RH?

[ugurcakir]

Hi, thanks for the great video. Do you think these sensors can be used in a wearable device (bracelet for example) to measure body temperature? Which material can I use to make connection with skin?

[erhimc]

Can you recommend a package that is already assembled and working that I can buy?

[poepflater]

Had a bit of a struggle until I figured they need 5V and not 3.3V, bought two units and they read within .02C of each other most of the time

[TurbidSugar]

This video is goooold ! I have a question, which one of sensors have fastest sample rate ?

[supardimasrun]

The problem with this video is only 1. The HDC1080 is good but the respose time is 15s according to the datasheet.
The best choice for me is BME280 because the response time is only 1s. That's is to good enough for a humidity sensor, because of the other has 5s response time average.

[abidbaloch]

Sir can I use your code in dht11 sensor.

[bbrendon]

I don't understand how you determined temperature accuracy if you didn't have an accurate sensor to begin with?

[arthurpamplona]

Hi! I've got a doubt: does the HDC0180 use an IR emitter to identifying the data?

[DavidStaMaria-tfmy]

Have you tried putting the HDC1080 in an enclosure and checked its performance? Or is it the same?

[KingErasmos]

Where are you finding the HDC1080 as cheap? They’re not even close to cheap from what I can find.