Hi,
Very new to Arduino ...steep learning curve.
For my first project I'm planning on using about 10 humidity sensors and the DHT11 looks like it will do the job. I would like to go ahead and buy them so that I can get on with their installation.
These DHT11 seem to come in 2 packages, one which is just the blue package with the four wires coming out of it and then there are modules available where the aforementioned package is mounted on a small circuit board with a couple of extra components soldered to the board.
My question is: What is the difference between the two and which is best to use with an Arduino?
Cheers
Ron
I cant see the pictures you are talking about so let me make an educated guess:
it are voltage converts and resistors that are needed for proper working.
If your project need 10 humidity sensors you are talking something serious.
The DHT11 is definitely a cheap sensor but the quality (accuracy) can differ a lot. - search the forum
There are better but more expensive humidity sensors that will give better results.
What are your requirements wrt precision and accuracy.
Hi and thanks,
I started a post 18 months ago about my project: Absolute beginner..How do I get started? - #9 by JonRon - Project Guidance - Arduino Forum
Photos of the 2 types DHT11 attached.
DHT11 seem to be popular with Arduino projects, what are the alternatives which will work well with Arduinos (for novices such as myself)
Cheers
Ron
What is the application .
The DHT22 sensor is far better than the DHT11 .
As for the 2 methods which the DHT11 comes in , only 3 pins are ever used.
The sensor needs a pullup resistor from its Vcc line to its data line.
In the arrangement with only 3 pins supplied , the pullup resistor and usually bypass capacitor are supplied.
Hi,
Thanks for the replies.
Perhaps the DHT11 is not the best sensor for this job so I've started a new thread:Which humidity sensor should I use? - Sensors - Arduino Forum
Thanks
Ron