DHT22 and Arduino Pro Mini

Post here about your Arduino projects, get help - for Adafruit customers!

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
ste5eu
 
Posts: 2
Joined: Sun Oct 20, 2013 3:12 pm

DHT22 and Arduino Pro Mini

Post by ste5eu »

Hi
I have had the sensor working successfully on both the Duemillanove and a Raspberry Pi.

However using the same code on a 3.3v Arduino Pro Mini I simply get Zero's returned when using your DHT libraries.

Any ideas gratefully received.

Thanks

Steve

User avatar
adafruit_support_mike
 
Posts: 67485
Joined: Thu Feb 11, 2010 2:51 pm

Re: DHT22 and Arduino Pro Mini

Post by adafruit_support_mike »

The DHT22's lower limit for power is 3.3v. Have you tried giving it a 4.5v - 5v supply?

ste5eu
 
Posts: 2
Joined: Sun Oct 20, 2013 3:12 pm

Re: DHT22 and Arduino Pro Mini

Post by ste5eu »

Thanks Mike, I haven't tried that but I will. However it works fine at 3.3v when connected to a Raspberry Pi.

Locked
Please be positive and constructive with your questions and comments.

Return to “Arduino”