DHT 22 library on other than 16 mhz systems

[duckie]

Hello,
I am working on a data logger using the DHT 22 humidity sensor. My logger runs at 8 mhz to enable running the 328 at 3v3.
I am getting read failures when I try to read the DHT. Reading the library change history it makes reference to:

" Support for non 16mhz devices

Added constructor parameter to allow for different timing needs. It has
the a default value of 6 which is the original value, so it should be
backwards compatible"

What do I need to change and what value is needed for use on an 8 mhz system?

Thanks,
duckie

[adafruit_support_bill]

Hmmm. Not a very well documented change, is it. You would need to add a third parameter to the constructor in your sketch. That is the counter for the receive timing loop which is 6 by default. From looking at the code, I think you would need a smaller number - probably between 3 and 5. That's a small enough range that it shouldn't take too long to find a value that works.

[duckie]

Hi,
Thank you. I had already determined that the third parameter was in the constructor, but was unsure of the value. I will try the values you suggest.
Thanks,
Duckie