Arduino DHT22 library

Forum 2005-2010 (read only) Hardware Interfacing
1

I have created an Arduino DHT22 library. This is my first post on the forum and can not post the links until my second post >:(

2

2nd Post with links
DHT22 humidity and temperature sensor page at sparkfun Humidity and Temperature Sensor - DHT20 - SEN-18364 - SparkFun Electronics
The code is currently posted here http://goo.gl/uy1fV
Post a reply with any comments or questions you may have.

3

Works perfectly. the only other code i could find for the DHT22 did not work all the time and Aosong's datasheet was remarkably unhelpful.
Kudos Net Honcho! :sunglasses:

4

Thanks for the kind words. Next version will verify the checksum.

5

I worked with a very similar device, the DHT11. I'd be interested to know if what is at...

... works with the DHT22.

Neat device, by the way! I got mine from Nuelectronics who do some fun things at good prices. Web page a little untidy, and "hides" things... but dig around! The above links to further comments in this vein.

6

@Net:

As there are similar devices like the DHT11, does your lib support them too? now or in a next release?

7

I looked at the DHT11 protocol. It looks like the same protocol. It is worth a try. I do not have a DHT11 to test with.

8

I created a github project for the DHT22 arduino library