AVR-Chat

Hi Jay,

http://www.grantronics.com.au/files/AvrDongle.PDF is the schematic of 
an STK300 compatible dongle. Enjoy.

What problems are you having with the current dongle?

Les.

On 28 Mar 2006 at 12:44, Jay Dagenais wrote:

> Alrighty, I am trying to build a replacement dongle for my STK300
> board, as I have had the same issues as most others have had using the
> stock dongle. I hopefully have not yet destroyed my parrallel port, I
> can still print off pages so I think it is alright still?? but don't
> want to keep testing fate each time I have to load some code.
> 
> Some of the sugested fixes include the use of analog RC filters on the
> SCK line, and using shorter cable runs. In the short term I plan to
> install a filter on my existing dongle, but I also plan to build an
> improved version as soon as I can identify exactly what the IC is, as
> in my dongle the part ID has been grinded away in order to make it fit
> properly into the housing. On the TI site, there are two versions of
> the octal buffers, one starts with CD, and the other with SN. Which is
> the right part to use? or does it even matter?
> 
> I run my software for the time being on my only working computer,
> which is my laptop. I am now afraid to even plug the dongle in anymore
> to this computer as I really don't want to blow the port ASIC. I guess
> one way to avoid this potential issue would be to either buy or build
> a proper programmer. I would prefer to build. Is there an easy to
> implement design available? using common parts that has features to
> protect the port/s used and is able to program a wide variety of
> AVR's, from the Mega to the Tiny? Something which does not use another
> micro would be ideal! but sticks to logic IC's instead. Thanks in
> advance for any help with this!!! jaydag71
> 
> _________________________________________________________________
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> 
> 
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 
> 


-------------------------------------------------------------
Les Grant. VK2KYJ.      Phone: 02 9896 7150 Fax: 02 9896 7153
Grantronics Pty Ltd     Int'l: +612 9896 7150, +612 9896 7153
ABN 46 070 123 643
PO Box 275, Wentworthville. NSW. 2145. Australia.            
http://www.grantronics.com.au  mailto:info@grantronics.com.au
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