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Bootloader : Atmega2560 16au and Atmega2560 8au and extarnal crystal of 8Mhz.

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Posted by Somnath   (1 post)  [Biography] bio
Date Sun 18 Oct 2015 11:48 AM (UTC)
Message
Hi

First of all thanks alot for your contribution for us.

I have used your bootloader for Atmega2560 16au with 16Mhz external crystal and its works like a wonder.

But in my new project I have 3V power supply so I am planning to use low external crystal so that I can operate the Atemga with low frequency and so the voltage will be go as low as possible.

My first question:
I uploaded the bootloader using 8Mhz external crystal and it went sucessfully but I am not able to upload sketch.

so here is my question : Can i ran Atmega2560 16au with 8Mhz crystal and will it work at 3V ,without any risk?

My second question:
As i do not having Atmega2560 8au right now so i am not able to test. will your bootloader works with Atmega2560 8au and external 8Mhz crystal. or before burning bootloader I need to make any changes.


Sorry to ask you such a long query . But I have really spent lots of time looking at this and finally today a made a post every where.

Please respond me.

Thanks a lot. I will wait for your response.
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Posted by Meerclar   USA  (733 posts)  [Biography] bio
Date Reply #1 on Sun 18 Oct 2015 01:47 PM (UTC)

Amended on Sun 18 Oct 2015 01:49 PM (UTC) by Meerclar

Message
Per Nick's repeated and easily found request: Please post Arduino-related questions to the Arduino Forum or to StackExchange: Arduino. This saves splitting questions and answers between this forum and the Arduino ones.



Yes, I had issues copying the template this time
Meerclar - Lord of Cats
Coder, Builder, and Tormenter of Mortals
Stormbringer: Rebirth
storm-bringer.org:4500
www.storm-bringer.org
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Posted by Nick Gammon   Australia  (22,975 posts)  [Biography] bio   Forum Administrator
Date Reply #2 on Sun 18 Oct 2015 09:00 PM (UTC)
Message
Template:Arduino Please post Arduino-related questions to the Arduino Forum or to StackExchange: Arduino. This saves splitting questions and answers between this forum and the Arduino ones.


Quote:

But I have really spent lots of time looking at this and finally today a made a post every where.


Cross-posting, huh?
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (22,975 posts)  [Biography] bio   Forum Administrator
Date Reply #3 on Sun 18 Oct 2015 09:01 PM (UTC)

Amended on Sun 18 Oct 2015 09:02 PM (UTC) by Nick Gammon

Message
Meerclar said:

Yes, I had issues copying the template this time


The template, which should work for you, is:


[arduino]


If it doesn't please explain in what way.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Meerclar   USA  (733 posts)  [Biography] bio
Date Reply #4 on Sun 18 Oct 2015 11:47 PM (UTC)
Message
Yeah, it was a PEBCAK situation Nick. I really shouldn't be attempting to do anything that early in the day.
Meerclar - Lord of Cats
Coder, Builder, and Tormenter of Mortals
Stormbringer: Rebirth
storm-bringer.org:4500
www.storm-bringer.org
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Posted by Nick Gammon   Australia  (22,975 posts)  [Biography] bio   Forum Administrator
Date Reply #5 on Mon 19 Oct 2015 05:02 AM (UTC)
Message
I get those late in the day, so don't feel too bad about it. :)
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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