Just wanted to share this small piece of information that can help many . If you want to Run your AVR at 8MHz from the internal oscillator you need to disable the CLK/8 Fuse. You can do this by burning new fuse values. This can also be done in you main function as well. Below is a piece of code that will change the pre-scaler to zero.

// set the clock speed to "no pre-scaler" (8MHz with internal osc or
// full external speed)
// set the clock prescaler. First write CLKPCE to enable setting of clock the
// next four instructions.
CLKPR=(1< 
Hope this will help!
Share this:
Click to share on Facebook (Opens in new window)
Click to share on Reddit (Opens in new window)
Click to share on Twitter (Opens in new window)
Click to print (Opens in new window)
More
Click to share on LinkedIn (Opens in new window)
Click to share on Pocket (Opens in new window)
Click to share on Pinterest (Opens in new window)
Click to email a link to a friend (Opens in new window)
Click to share on Tumblr (Opens in new window)