AVR Dragon problem

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#1
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Hi,
I have a question for people using AVR Dragon. I have a problem with this tool. I bought it and used a few months but one day it started not connect to my avr ev. board. Bord is "made in china" but it worked good. Voltage correct too. So I decided to buy another Dragon. Now I have two the same not working dragons. :) . tools connects to computer, but not to target. besides im using JTAG
Any ideas.

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Are you sure that the target board is OK?

Leon Heller G1HSM

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No I'm not sure but what could it be that it can demage DRAGON. Target board supply voltage ok. system functions few months and... one day no functionality.

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Is your dragon "slain?" There a part on the dragon that dies if you touch the board in the wrong place.

The largest known prime number: 282589933-1

It's easy to stop breaking the 10th commandment! Break the 8th instead. 

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The target board fuses may be set so it cant get into JTAG mode... I have a board that is like that.

I could also be giving BS im a noobie

Nigel

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Torby wrote:
Is your dragon "slain?" There a part on the dragon that dies if you touch the board in the wrong place.

That was the original version. The current one is more reliable.

Leon Heller G1HSM

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Yes it is slain. You are saying that it could be demaged with electrostatic discharge? maybe...

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Quote:

You are saying that it could be demaged with electrostatic discharge?

Find any post here by "Plons" then follow the URL in his signature. That page tells you what's wrong with the design of the Dragon, how it can be damaged and how it can be repaired.

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Quote:
So I decided to buy another Dragon. Now I have two the same not working dragons.

No, you will not get on the list with that - do not bother.
Not even at the very end of "Top 100 Dragon Slayers".
You could kill two more then maybe..
Or you could bring slew one to life and kill it once again (killing a resurrected Dragon counts as two hits).

No RSTDISBL, no fun!