AREF to GND

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#1
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Hello,

 

I accidentally connected AREF to ground on my atmega328p and now it's not working.

I tried to recover fuses (http://www.instructables.com/id/HV-Rescue-Simple/), but it didn't work.

 

Did I destroy it or can I save it somehow?

 

Ondra

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ondralukes wrote:
it's not working

what's not working - AREF, the ADC, or the whole chip?

 

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"what's not working - AREF, the ADC, or the whole chip?"

 

As far as now, neither :

according to OP fuse recovery is not working.... and his natural (and interesting, unlike some answer)  question is whether chip is still working.... and can be recovered...

 

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the whole chip isn't working

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Then, only remaining question is "can I save it somehow?"

In such a dubious state, I could not sell it (would be unethical); if something went wrong, I could not find wether it is software issue or half burned hardware.

-> I would get rid of it (but before, wait and hope until someone more competent than me tells I am wrong)

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ondralukes wrote:

the whole chip isn't working

 

How do you know?

 

For example...

 

can you read the signature?

can you still program the chip?

can you flash an LED at 1Hz?

...?

#1 This forum helps those that help themselves

#2 All grounds are not created equal

#3 How have you proved that your chip is running at xxMHz?

#4 "If you think you need floating point to solve the problem then you don't understand the problem. If you really do need floating point then you have a problem you do not understand." - Heater's ex-boss

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It isn't working at all, I can't read signature, can't program the chip.

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Image result for it's dead, jim

 

crying

 

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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Ok, I'll buy new one.

Anyway, thanks for help.

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Wait until someone more competent rknows how to resurrect it

In the mean time, buy two -at least-  (are cheap; allows other short circuits)