AVR-Chat

Does anyone here have, or know where I can get, a full schematic of
Atmel's AVR-500 board?

There is a logic schematic available but this doen not show all the
components such as transistors, resistors etc. I have two dead boards that
I need to repair and working out what bits are what is not easy with SMT!

-- 
-------------------------------------------------------------------------
Richard Torrens
4QD manufacture speed controllers for battery electric motors.
www sites http://www.4QD.co.uk http://www.4QDtec.com http://www.4QD.org
---------- We use a RISC PC 32 bit RISC computer  ----------------

At 08:23 PM 19/02/2006, you wrote:
>Does anyone here have, or know where I can get, a full schematic of
>Atmel's AVR-500 board?

On the files area of this list or AVRFreaks.com

Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Email: john@ampertronics.com.au
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************

In article <7.0.1.0.2.20060220110425.034506e8@ampertronics.com.au>,
   John Samperi <samperi@ampertronics.com.au> wrote:
> At 08:23 PM 19/02/2006, you wrote:
> >Does anyone here have, or know where I can get, a full schematic of
> >Atmel's AVR-500 board?

> On the files area of this list or AVRFreaks.com

The only schematic I have found on AVRFreaks is incomplete (see my full
original posting)...

If there a FAQ telling how to get to the list's file area, so I can see
that one? I suspect it is the same incomplete schematic.

Matbe you could supply a URL for the full circuit?

-- 
-------------------------------------------------------------------------
Richard Torrens
4QD manufacture speed controllers for battery electric motors.
www sites http://www.4QD.co.uk http://www.4QDtec.com http://www.4QD.org
---------- We use a RISC PC 32 bit RISC computer  ----------------

Just go to groups.yahoo.com , login, choose this group from your list of
subscribed groups and then choose Files  .... this is the same as all other
yahoo groups.

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of Lists
Sent: Monday, February 20, 2006 6:32 AM
To: AVR-Chat@yahoogroups.com
Subject: [AVR-Chat] Re: STK-500 schematic

In article <7.0.1.0.2.20060220110425.034506e8@ampertronics.com.au>,
   John Samperi <samperi@ampertronics.com.au> wrote:
> At 08:23 PM 19/02/2006, you wrote:
> >Does anyone here have, or know where I can get, a full schematic of
> >Atmel's AVR-500 board?

> On the files area of this list or AVRFreaks.com

The only schematic I have found on AVRFreaks is incomplete (see my full
original posting)...

If there a FAQ telling how to get to the list's file area, so I can see
that one? I suspect it is the same incomplete schematic.

Matbe you could supply a URL for the full circuit?

-- 
-------------------------------------------------------------------------
Richard Torrens
4QD manufacture speed controllers for battery electric motors.
www sites http://www.4QD.co.uk http://www.4QDtec.com http://www.4QD.org
---------- We use a RISC PC 32 bit RISC computer  ----------------





 
Yahoo! Groups Links

At 10:31 PM 20/02/2006, you wrote:
>Matbe you could supply a URL for the full circuit?

<http://www.avrfreaks.net/index.php?module=FreaksFiles&func=viewFile&id=155&showinfo=1>http://www.avrfreaks.net/index.php?module=FreaksFiles&func=viewFile&id=155&showinfo=1

If you still have problems getting it I can email it to you.


Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Email: john@ampertronics.com.au
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************

Do you Yahoo!?
Yahoo! Movies - Search movie info and celeb profiles and photos.

----- Original Message -----

From: Mansur Mansur

To: AVR-Chat@yahoogroups.com

Sent: Tuesday, February 21, 2006 5:49 PM

Subject: [AVR-Chat] Infra red

Dear all,

I plan to build wireless communication using sony remote controll as a transmitter and sony receiver.any one has experience using this sonny remote.

Regards,

Mansur

On Tue, 21 Feb 2006, Mansur Mansur wrote:

> Dear all,
>   I plan to build wireless communication using sony remote controll as a transmitter and sony receiver.any one has experience using this sonny remote.
>   Regards,
>   Mansur 
> 

Most of the Sony remotes I have had experience with used infrared.  I 
worked in an electronics repair shop for 10 years that was an authorized 
Sony warranty repair station. Some really OLD remotes used audio 
frequencies and tuning forks!

You could gut the electronics, use the infrared LED and sensor and connect 
your own AVR circuit to it, but I'd rather just get an IR LED and sensor 
from one of the many sources and build it from scratch.

All of Sony's chips and firmware for these remotes is proprietary AFAIK. 
They only give minimal info to the techs so they can determine if a part 
is bad or not.

Zack

Mansur Mansur wrote:

> I plan to build wireless communication using sony remote controll as a 
> transmitter and sony receiver.any one has experience using this sonny 
> remote.

Each manufacturer uses their own coding scheme for the IR pulses that 
are on the 36, 38 or 40 KHz IR carrier frequency. Here is an article I 
wrote that explains the most common Sony protocol and gives some BASIC 
code for decoding the pulses into a command code and device code: 
http://www.zbasic.net/appNotes/AN204.pdf. The full code can be found 
here: http://www.zbasic.net/appNotes/AN204.zip. The BASIC code will need 
to be rewritten for an AVR but the basic algorithm is there. You will 
need code to measure the time for each pulse width using Timer1.

There are numerous other references to Sony remotes; remember Google is 
your friend. In case you are interested this code and application note 
was written for the ZBasic AVR-based microcontroller. Other AVR, ZBasic 
and BasicX projects can be found on my website.

Mike
http://home.austin.rr.com/perks/micros/

LOL....

I'm just so amazed by the hundreds of posts saying "I'm a graduate student at blah-blah-U and I need to write a program that does something mundane. Can you send me code to do this?"

How in the world these people made it to grad school is beyond me..

 - jim

On Tue, 21 Feb 2006 18:03:34 +1100
"Ivan Vernot" <ivernot@optushome.com.au> wrote:

> 
> 
> 
> 
>   ----- Original Message ----- 
>   From: Mansur Mansur 
>   To: AVR-Chat@yahoogroups.com 
>   Sent: Tuesday, February 21, 2006 5:49 PM
>   Subject: [AVR-Chat] Infra red
> 
> 
>   Dear all,
>   I plan to build wireless communication using sony remote controll as a transmitter and sony receiver.any one has experience using this sonny remote.
>   Regards,
>   Mansur 
> 
> Yes.
> 
> http://www.catb.org/~esr/faqs/smart-questions.html#intro
> 
> 
> But because I am in a really bad mood!
> 
> http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote
> 
> first hit!
> http://scv.bu.edu/GC/shammi/ir/
> 
> second hit!
> http://www.winpicprog.co.uk/pic_tutorial5.htm
> 
> third hit!
> http://www.epanorama.net/links/irremote.html
> 
> and so on.....
> 
> Now, keep in mind when you hand in you assignment that education institutions frown upon plagiarism - don't forget list your references....
> 
> Ivan Vernot.

Couldn't agree more Jim. Such is the curse of email and the Internet.

These emails are easy to spot and are quite different to the ones from 
people who have tried something and got stuck. As a group could we all 
agree to either:
a) Not respond to these emails - it only encourages them
b) Respond with a standard answer such as "Use Google, do some 
investigation and work before asking for more help"

It's funny how you never hear from these people again and they never 
post their results.

Mike
http://home.austin.rr.com/perks/micros/

> LOL....
>
> I'm just so amazed by the hundreds of posts saying "I'm a graduate 
> student at blah-blah-U and I need to write a program that does 
> something mundane. Can you send me code to do this?"
>
> How in the world these people made it to grad school is beyond me..
>
> - jim
>
> On Tue, 21 Feb 2006 18:03:34 +1100
> "Ivan Vernot" <ivernot@optushome.com.au> wrote:
>
> >   ----- Original Message -----
> >   From: Mansur Mansur
> >   To: AVR-Chat@yahoogroups.com
> >   Sent: Tuesday, February 21, 2006 5:49 PM
> >   Subject: [AVR-Chat] Infra red
> >
> >
> >   Dear all,
> >   I plan to build wireless communication using sony remote controll 
> as a transmitter and sony receiver.any one has experience using this 
> sonny remote.
> >   Regards,
> >   Mansur
> >
> > Yes.
> >
> > http://www.catb.org/~esr/faqs/smart-questions.html#intro 
> <http://www.catb.org/%7Eesr/faqs/smart-questions.html#intro>
> >
> >
> > But because I am in a really bad mood!
> >
> > 
> http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote 
> <http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote>

James Washer wrote:
> LOL....
> 
> I'm just so amazed by the hundreds of posts saying "I'm a graduate 
 > student at blah-blah-U and I need to write a program that does something
 > mundane. Can you send me code to do this?"
> 
> How in the world these people made it to grad school is beyond me..
> 
>  - jim
> 
> On Tue, 21 Feb 2006 18:03:34 +1100
> "Ivan Vernot" <ivernot@optushome.com.au> wrote:
> 
> 

The scary part is that they do... And then set up shop in Bangalore, happy
to earn 25% of what I make doing the same damn thing!

Bruce

The whole world has become too lazy. 

Back when I worked in an office, people would come to my desk and say "what flag for tar does gzip compression?" or some such question. I'd say "I don't know, let's look it up" (even though I did know).. I'd pull up the man page, and search for the argument. We'd find it, and they'd say "Thanks"... Now, one would hope they'd realize you can look things like this up for yourself.. but NO... an hour later, they'd come back from another RTFM question.. so I'd play the same game again.. Sometimes, I'd have to play this game hundreds of times for the laziest folks

 - jim

On Tue, 21 Feb 2006 12:37:36 -0600
Mike Perks <basicx@austin.rr.com> wrote:

> Couldn't agree more Jim. Such is the curse of email and the Internet.
> 
> These emails are easy to spot and are quite different to the ones from 
> people who have tried something and got stuck. As a group could we all 
> agree to either:
> a) Not respond to these emails - it only encourages them
> b) Respond with a standard answer such as "Use Google, do some 
> investigation and work before asking for more help"
> 
> It's funny how you never hear from these people again and they never 
> post their results.
> 
> Mike
> http://home.austin.rr.com/perks/micros/
> 
> > LOL....
> >
> > I'm just so amazed by the hundreds of posts saying "I'm a graduate 
> > student at blah-blah-U and I need to write a program that does 
> > something mundane. Can you send me code to do this?"
> >
> > How in the world these people made it to grad school is beyond me..
> >
> > - jim
> >
> > On Tue, 21 Feb 2006 18:03:34 +1100
> > "Ivan Vernot" <ivernot@optushome.com.au> wrote:
> >
> > >   ----- Original Message -----
> > >   From: Mansur Mansur
> > >   To: AVR-Chat@yahoogroups.com
> > >   Sent: Tuesday, February 21, 2006 5:49 PM
> > >   Subject: [AVR-Chat] Infra red
> > >
> > >
> > >   Dear all,
> > >   I plan to build wireless communication using sony remote controll 
> > as a transmitter and sony receiver.any one has experience using this 
> > sonny remote.
> > >   Regards,
> > >   Mansur
> > >
> > > Yes.
> > >
> > > http://www.catb.org/~esr/faqs/smart-questions.html#intro 
> > <http://www.catb.org/%7Eesr/faqs/smart-questions.html#intro>
> > >
> > >
> > > But because I am in a really bad mood!
> > >
> > > 
> > http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote 
> > <http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote>
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
>

ARRRGGH..
I just got an instant message from a lazy co-worker.. he pinged me with "Hey Jim, do you have a second?"... to which I responded, "I had about 3600 of them an hour ago, but they're all gone now"

 - jim
On Tue, 21 Feb 2006 12:37:36 -0600
Mike Perks <basicx@austin.rr.com> wrote:

> Couldn't agree more Jim. Such is the curse of email and the Internet.
> 
> These emails are easy to spot and are quite different to the ones from 
> people who have tried something and got stuck. As a group could we all 
> agree to either:
> a) Not respond to these emails - it only encourages them
> b) Respond with a standard answer such as "Use Google, do some 
> investigation and work before asking for more help"
> 
> It's funny how you never hear from these people again and they never 
> post their results.
> 
> Mike
> http://home.austin.rr.com/perks/micros/
> 
> > LOL....
> >
> > I'm just so amazed by the hundreds of posts saying "I'm a graduate 
> > student at blah-blah-U and I need to write a program that does 
> > something mundane. Can you send me code to do this?"
> >
> > How in the world these people made it to grad school is beyond me..
> >
> > - jim
> >
> > On Tue, 21 Feb 2006 18:03:34 +1100
> > "Ivan Vernot" <ivernot@optushome.com.au> wrote:
> >
> > >   ----- Original Message -----
> > >   From: Mansur Mansur
> > >   To: AVR-Chat@yahoogroups.com
> > >   Sent: Tuesday, February 21, 2006 5:49 PM
> > >   Subject: [AVR-Chat] Infra red
> > >
> > >
> > >   Dear all,
> > >   I plan to build wireless communication using sony remote controll 
> > as a transmitter and sony receiver.any one has experience using this 
> > sonny remote.
> > >   Regards,
> > >   Mansur
> > >
> > > Yes.
> > >
> > > http://www.catb.org/~esr/faqs/smart-questions.html#intro 
> > <http://www.catb.org/%7Eesr/faqs/smart-questions.html#intro>
> > >
> > >
> > > But because I am in a really bad mood!
> > >
> > > 
> > http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote 
> > <http://www.google.com.au/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-27,GGLG:en&q=infrared+communication+sony+remote>
> 
> 
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
>

On Tue, Feb 21, 2006 at 10:15:24AM -0800, James Washer wrote:
> LOL....
> 
> I'm just so amazed by the hundreds of posts saying "I'm a graduate
> student at blah-blah-U and I need to write a program that does
> something mundane. Can you send me code to do this?"

I'm not as certain as others that this thread was started by the typical
student. But fully agree the sort of thing discussed happens way too
often. Even at work. I've come to realize:

	Its easy to walk on water
	when the lake is only 1" deep.

> How in the world these people made it to grad school is beyond me..

There are plenty of schools who issue graduate degrees simply for
enrolling. Has gotten so bad that those who actually *earned* a degree
from one local state school are forced to hide the fact as the market is
flooded with idiots bearing the same sheepskin.

-- 
David Kelly N4HHE, dkelly@HiWAAY.net
========================================================================
Whom computers would destroy, they must first drive mad.

As sad as it is.. I must admit that I have a friend who is not just an instructor/"professor" at one of those "commercial colleges", he is in fact, the department chairman, and he doesn't know as much about his subject than I'd expect from a sophomore student.. 

 - jim

On Tue, 21 Feb 2006 13:21:30 -0600
David Kelly <dkelly@hiwaay.net> wrote:

> 
> There are plenty of schools who issue graduate degrees simply for
> enrolling. Has gotten so bad that those who actually *earned* a degree
> from one local state school are forced to hide the fact as the market is
> flooded with idiots bearing the same sheepskin.
> 
> -- 
> David Kelly N4HHE, dkelly@HiWAAY.net

At 05:00 PM 22/02/2006, you wrote:
>where I can find software for programing.

AVR Studio folder (STK500) stk500.ebn. You will need
an AVR910 like programmer to program a blank chip I
believe, I have never done this myself but there was
a thread on avrfreaks on how to repair the STK500
including all the necessary steps for programming.

Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Email: john@ampertronics.com.au
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************

Graduated from a third world country and living and working in a first world
country I can safely say that "asking lame questions " is a universal
behaviour. It is frustrating and does wastes time but getting angry does not
help at all. 
You are right, the situation is made worse by the "commercial colleges"
where teachers read out electronics and other stuff as if they are telling
some story without any regards as how to put things into practise. 
Shoaib

-----Original Message-----
From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On Behalf
Of James Washer
Sent: 21 February 2006 20:24
To: AVR-Chat@yahoogroups.com
Subject: Worthless degree programs. Was:: Re: [AVR-Chat] Infra red


As sad as it is.. I must admit that I have a friend who is not just an
instructor/"professor" at one of those "commercial colleges", he is in fact,
the department chairman, and he doesn't know as much about his subject than
I'd expect from a sophomore student.. 

 - jim

On Tue, 21 Feb 2006 13:21:30 -0600
David Kelly <dkelly@hiwaay.net> wrote:


> 
> There are plenty of schools who issue graduate degrees simply for
> enrolling. Has gotten so bad that those who actually *earned* a degree
> from one local state school are forced to hide the fact as the market is
> flooded with idiots bearing the same sheepskin.
> 
> -- 
> David Kelly N4HHE, dkelly@HiWAAY.net


 
Yahoo! Groups Links

In article <7.0.1.0.2.20060221091404.03454368@ampertronics.com.au>,
   John Samperi <samperi@ampertronics.com.au> wrote:
> At 10:31 PM 20/02/2006, you wrote:
> >Matbe you could supply a URL for the full circuit?

> <http://www.avrfreaks.net/index.php?module=FreaksFiles&func=viewFile&id=155&showinfo=1>http://www.avrfreaks.net/index.php?module=FreaksFiles&func=viewFile&id=155&showinfo=1

> If you still have problems getting it I can email it to you.

Well, thanks for that...

However - that is the incomplete circuit which I already have found.

If you look at this circuit, it is a block schematic, referring to Sheets
1, 2 etc up to SHEET-9 SCH

It's possible to work out where the AVR freaks files are kept, and it's an
Apache server which allows directory listing.

There's no sign of anything looking like the missing sheets. Lots of other
tasty info then, if you don't mind digging.

-- 
-------------------------------------------------------------------------
Richard Torrens
4QD manufacture speed controllers for battery electric motors.
www sites http://www.4QD.co.uk http://www.4QDtec.com http://www.4QD.org
---------- We use a RISC PC 32 bit RISC computer  ----------------

Lists wrote:
> In article <7.0.1.0.2.20060221091404.03454368@ampertronics.com.au>,
>    John Samperi <samperi@ampertronics.com.au> wrote:
> 
>>At 10:31 PM 20/02/2006, you wrote:
>>
>>>Matbe you could supply a URL for the full circuit?
> 
> 
>><http://www.avrfreaks.net/index.php?module=FreaksFiles&func=viewFile&id=155&showinfo=1>http://www.avrfreaks.net/index.php?module=FreaksFiles&func=viewFile&id=155&showinfo=1
> 
> 
>>If you still have problems getting it I can email it to you.
> 
> 
> Well, thanks for that...
> 
> However - that is the incomplete circuit which I already have found.
> 
> If you look at this circuit, it is a block schematic, referring to Sheets
> 1, 2 etc up to SHEET-9 SCH
> 
> It's possible to work out where the AVR freaks files are kept, and it's an
> Apache server which allows directory listing.
> 
> There's no sign of anything looking like the missing sheets. Lots of other
> tasty info then, if you don't mind digging.
> 
I just tried the link and downloaded the 10 page pdf, it is COMPLETE !!!!

I should know, I have used it to repair my STK500's :)

Regards,

Kat.


-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 268.0.0/266 - Release Date: 21/02/2006

On 22 Feb 2006, at 11:25, Lists wrote:

> However - that is the incomplete circuit which I already have found.
> 
> If you look at this circuit, it is a block schematic, referring to Sheets
> 1, 2 etc up to SHEET-9 SCH

Try mouse right-click on the "download" and "save target as" to you hard disk.
It should be a .pdf size 314,857 bytes.
Possibly you have acrobat reader set (somehow) that it only displays the first 
page when downloading?


George Smith

On Wed, Feb 22, 2006 at 10:07:25AM -0000, Shoaib Javed wrote:
> You are right, the situation is made worse by the "commercial
> colleges" where teachers read out electronics and other stuff as if
> they are telling some story without any regards as how to put things
> into practise.

I was refering to a state school with a minority orientation who
attracts government employees to their graduate programs with an easy
ride. Apparently in Federal Government promotions review one PhD carries
as much weight as any other PhD.

-- 
David Kelly N4HHE, dkelly@HiWAAY.net
========================================================================
Whom computers would destroy, they must first drive mad.

At 10:25 PM 22/02/2006, you wrote:
>If you look at this circuit, it is a block schematic, referring to Sheets
>1, 2 etc up to SHEET-9 SCH

There is only 1 PDF file. All pages are there just scroll down
to the page you want like others have suggested.

Regards

John Samperi

********************************************************
Ampertronics Pty. Ltd.
11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
Tel. (02) 9674-6495       Fax (02) 9674-8745
Email: john@ampertronics.com.au
Website  http://www.ampertronics.com.au
*Electronic Design * Custom Products * Contract Assembly
********************************************************

In article <43FC6991.301@kaqelectronics.dyndns.org>,
   Kathy Quinlan <kat-yahoo@kaqelectronics.dyndns.org> wrote:

[Snip]

> > 
> I just tried the link and downloaded the 10 page pdf, it is COMPLETE !!!!

> I should know, I have used it to repair my STK500's :)

> Regards,

> Kat.

Ooops. Hidden in plain view.

I must have been having what is referrred to on some other lists as 'a
senior moment'.

Sorry. And thanks!


BTW: if anyone here is interested in Motor control (there are several
projects in the AVRFreaks area) we may be interested in working with tem.
Particularly if they are OK at the hardware.

-- 
-------------------------------------------------------------------------
Richard Torrens
4QD manufacture speed controllers for battery electric motors.
www sites http://www.4QD.co.uk http://www.4QDtec.com http://www.4QD.org
---------- We use a RISC PC 32 bit RISC computer  ----------------

Writing it into EEPROM somewhere and then reading it back after reset 
should work.

Zack

On Mon, 27 Feb 2006, josef mikle wrote:

> Hi John
>   does rR0 to R31 change after reset?
>   how can I save some few data (8 byte) in ram that after Reset I can recover them?
>   I will be appreciate if you send your reply on hosseingholizade@yahoo.com add.
>   Bye
>

But consider how many times are you going to do that? Eeprom writing has
limitations.
I just read this discution so I don´t know what IC are you talking about?

Ricardo Callejo


----- Original Message ----- 
From: "Zack Widup" <w9sz@prairienet.org>
To: "josef mikle" <josef_mikle@yahoo.com>
Cc: <AVR-Chat@yahoogroups.com>; <hosseingholizade@yahoo.com>
Sent: Tuesday, February 28, 2006 10:50 AM
Subject: Re: [AVR-Chat] Re: STK-500 schematic


>
> Writing it into EEPROM somewhere and then reading it back after reset
> should work.
>
> Zack
>
> On Mon, 27 Feb 2006, josef mikle wrote:
>
> > Hi John
> >   does rR0 to R31 change after reset?
> >   how can I save some few data (8 byte) in ram that after Reset I can
recover them?
> >   I will be appreciate if you send your reply on
hosseingholizade@yahoo.com add.

> >   Bye
> >
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

I have a regrigerator that the thermostat went bad. Having a DS1820 
for the temperature sensor and using an Olimex prototype board I made 
a replacement. To store the Temperature Set Point and Differental Set 
Point (how much +/- the temp can swing from the requisted temp) I 
used the following code.

eeprom unsigned char ts=80;	//Temperature Set Point
eeprom unsigned char ds=1;	//Differental Set Point

This only changes each time I change them. To stop from recording 
each 1 step up or down there is a hold-off for about 5 sec. so I can 
change several degreese then the setting is stored in eeprom and the 
microcontroller starts using that as the setting to go by.

Now when power goes off the thermostat knows where to cool the fridge 
to.

Mike

--- In AVR-Chat@yahoogroups.com, josef mikle <josef_mikle@...> wrote:
>
> Hi John
>   does rR0 to R31 change after reset?
>   how can I save some few data (8 byte) in ram that after Reset I 
can recover them?
>   I will be appreciate if you send your reply on 
hosseingholizade@... add.
>   Bye
> 
> John Samperi <samperi@...> wrote:
>   At 10:25 PM 22/02/2006, you wrote:
> >If you look at this circuit, it is a block schematic, referring to 
Sheets
> >1, 2 etc up to SHEET-9 SCH
> 
> There is only 1 PDF file. All pages are there just scroll down
> to the page you want like others have suggested.
> 
> Regards
> 
> John Samperi
> 
> ********************************************************
> Ampertronics Pty. Ltd.
> 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
> Tel. (02) 9674-6495       Fax (02) 9674-8745
> Email: john@...
> Website  http://www.ampertronics.com.au
> *Electronic Design * Custom Products * Contract Assembly
> ********************************************************
> 
> 
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After thoughts
If you are wanting to preserve something like the last reading using 
a SAVE pushbutton. Thats doing it, the pain-in-the-ass, manually way.

You could use a sensor that senses immediatelly when then input 
voltage fails and triggers a interrupt routine. Have a capacitor 
store enough power to run the micro for a few seconds while the loss-
of-power routine makes the saves. If you wanted you could still have 
the SAVE SW.

Mike

--- In AVR-Chat@yahoogroups.com, josef mikle <josef_mikle@...> wrote:
>
> Hi John
>   does rR0 to R31 change after reset?
>   how can I save some few data (8 byte) in ram that after Reset I 
can recover them?
>   I will be appreciate if you send your reply on 
hosseingholizade@... add.
>   Bye
> 
> John Samperi <samperi@...> wrote:
>   At 10:25 PM 22/02/2006, you wrote:
> >If you look at this circuit, it is a block schematic, referring to 
Sheets
> >1, 2 etc up to SHEET-9 SCH
> 
> There is only 1 PDF file. All pages are there just scroll down
> to the page you want like others have suggested.
> 
> Regards
> 
> John Samperi
> 
> ********************************************************
> Ampertronics Pty. Ltd.
> 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA
> Tel. (02) 9674-6495       Fax (02) 9674-8745
> Email: john@...
> Website  http://www.ampertronics.com.au
> *Electronic Design * Custom Products * Contract Assembly
> ********************************************************
> 
> 
> 
>   SPONSORED LINKS 
>         Atmel avr   Microcontrollers   Intel microprocessors     
Pic microcontrollers 
>     
> ---------------------------------
>   YAHOO! GROUPS LINKS 
> 
>     
>     Visit your group "AVR-Chat" on the web.
>     
>     To unsubscribe from this group, send an email to:
>  AVR-Chat-unsubscribe@yahoogroups.com
>     
>     Your use of Yahoo! Groups is subject to the Yahoo! Terms of 
Service. 

> 
>     
> ---------------------------------
>   
> 
> 
> 
> 		
> ---------------------------------
> Yahoo! Mail
> Bring photos to life! New PhotoMail  makes sharing a breeze.
>