[dorkbotpdx-blabber] avrdude ... I'm so afraid to mess up my fuses

[Scott Dixon]

You shouldn't have to waste the chips even if you mess up the fuses.   
There are a number of Atmel Dragon programmers around from a group  
order (including one at OpenTechSpace which you are welcome to use).   
By using the high voltage programming mode you can always reprogram  
the fuses no matter what they have been set to.  I think you can even  
use avrdude on the mac to do the HV programming (and of course AVR  
Studio on Windows).
-scott
On Jul 29, 2009, at 8:41 PM, Ward Cunningham wrote:

> Friends -- I see in the avrdude documentation that it reads the fuse  
> bits three times to make sure you haven't messed them us. Messing up  
> the fuse bits is the fastest way I know to ruin your afternoon. I've  
> learned to be extremely cautious with fuse bits using the reasonably  
> friendly atmel tools. I'm now trying to switch to avrdude on the  
> mac. I love that I can write a shell script to load my cybords. But  
> I can't figure out how to burn fuses without wasting parts. Any  
> suggestions? I'm trying to make long term phase measurements of the  
> ac line. I'd like to run my tiny45s off of a more stable clock. That  
> means programming fuses. I'm so afraid. Help. -- Ward
>
> __________________
> Ward Cunningham
> 503-432-5682
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