AVR-Chat

Hello Jim :)

You are probably thinking of a 'piezoelectric' speaker.  These often 
require higher voltages to drive them - here's a link for such a 
driver device:

   http://www.maxim-ic.com/appnotes.cfm/appnote_number/2914

Here's one link to a supplier of such speakers:

   http://www.murata.com/catalog/p15e6.pdf

I hope this helps.  Let me know if you need more info.

Frank
*******************
--- In AVR-Chat@yahoogroups.com, "Jim Wagner" <jim_d_wagner@...> 
wrote:

>
> I'm working on a big AVR project (a data radio) and need a
> small "loud speaker" for occasional use (error checking
> during setup, for example). 
> 
> So, does anyone know what the sound output transducers in
> cellphones are called? I've looked in catalogs and have
> found small tone makers, but no small voice-grade speakers.
> 
> 
> Suggestions of where to look would be appreciated!
> Jim, KA7EHK
> ---------------------------------------------------------------
> The Think Different Store
> http://www.thinkdifferentstore.com/
> For All Your Mac Gear
> ---------------------------------------------------------------
>

I'm working on a big AVR project (a data radio) and need a
small "loud speaker" for occasional use (error checking
during setup, for example). 

So, does anyone know what the sound output transducers in
cellphones are called? I've looked in catalogs and have
found small tone makers, but no small voice-grade speakers.


Suggestions of where to look would be appreciated!
Jim, KA7EHK
---------------------------------------------------------------
The Think Different Store
http://www.thinkdifferentstore.com/
For All Your Mac Gear
---------------------------------------------------------------

Hi Jim,

How small are you wanting?  I've seen old cordless phones at hamfests that 
have little speakers about an inch in diameter or less in them.  You can 
usually pick those things up for a dollar.

Zack W9SZ

On Tue, 20 Jun 2006, Jim Wagner wrote:

> I'm working on a big AVR project (a data radio) and need a
> small "loud speaker" for occasional use (error checking
> during setup, for example). 
> 
> So, does anyone know what the sound output transducers in
> cellphones are called? I've looked in catalogs and have
> found small tone makers, but no small voice-grade speakers.
> 
> 
> Suggestions of where to look would be appreciated!
> Jim, KA7EHK

Hi Jim,

you might want to look for manufacturers of Loco-sounddecoders. They have
loudspeakers for H0-scale and even N-scale (which would be about the size as
of a cellphone speaker.

Here some links (unfortunately they are both in Germany, but the pictures
might help your local dealers to browse their right catalogues.

http://www.loksound.de/index.php?showId=225 
http://www.uhlenbrock.de/3/4/0/0/I2AF0124-001.htm 

Or look for cellphone _surplus_ at your local dealers! *bay might also be a
source to look at.
Regards,

Klaus, DG5EAU

-----Ursprüngliche Nachricht-----
Von: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] Im Auftrag
von Jim Wagner
Gesendet: Dienstag, 20. Juni 2006 17:06
An: AVR-Chat@yahoogroups.com
Betreff: [AVR-Chat] Cellphone "loudspeaker"?

I'm working on a big AVR project (a data radio) and need a small "loud
speaker" for occasional use (error checking during setup, for example). 

So, does anyone know what the sound output transducers in cellphones are
called? I've looked in catalogs and have found small tone makers, but no
small voice-grade speakers.


Suggestions of where to look would be appreciated!
Jim, KA7EHK
---------------------------------------------------------------
The Think Different Store
http://www.thinkdifferentstore.com/
For All Your Mac Gear
---------------------------------------------------------------


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I'm looking for something to go into a manufactured
product. But, something around that size would work. I'll
keep looking. 

Thanks
Jim

On Tue, 20 Jun 2006 12:16:40 -0500 (CDT)
 Zack Widup <w9sz@prairienet.org> wrote:
> 
> Hi Jim,
> 
> How small are you wanting?  I've seen old cordless phones
> at hamfests that 
> have little speakers about an inch in diameter or less in
> them.  You can 
> usually pick those things up for a dollar.
> 
> Zack W9SZ
> 
> On Tue, 20 Jun 2006, Jim Wagner wrote:
> 
> > I'm working on a big AVR project (a data radio) and
> need a
> > small "loud speaker" for occasional use (error checking
> > during setup, for example). 
> > 
> > So, does anyone know what the sound output transducers
> in
> > cellphones are called? I've looked in catalogs and have
> > found small tone makers, but no small voice-grade
> speakers.
> > 
> > 
> > Suggestions of where to look would be appreciated!
> > Jim, KA7EHK
> 

---------------------------------------------------------------
The Think Different Store
http://www.thinkdifferentstore.com/
For All Your Mac Gear
---------------------------------------------------------------

Jim - would this work?
http://www.goldmine-elec-products.com/prodinfo.asp?number=G13780

> -----Original Message-----
> From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com]On
> Behalf Of Jim Wagner
> Sent: Tuesday, June 20, 2006 3:33 PM
> To: AVR-Chat@yahoogroups.com
> Subject: Re: [AVR-Chat] Cellphone "loudspeaker"?
> 
> 
> I'm looking for something to go into a manufactured
> product. But, something around that size would work. I'll
> keep looking. 
> 
> Thanks
> Jim
>

Thanks for the great suggestions. I had seen
"microspeakers" in DigiKey but they cost a fortune. These
will at least provide for some experimenting.

Again, thanks!
Jim


On Tue, 20 Jun 2006 18:26:32 -0400
 "Randy Ledyard" <rll_groups@adelphia.net> wrote:
> Jim - would this work?
>
http://www.goldmine-elec-products.com/prodinfo.asp?number=G13780
> 
> > -----Original Message-----
> > From: AVR-Chat@yahoogroups.com
> [mailto:AVR-Chat@yahoogroups.com]On
> > Behalf Of Jim Wagner
> > Sent: Tuesday, June 20, 2006 3:33 PM
> > To: AVR-Chat@yahoogroups.com
> > Subject: Re: [AVR-Chat] Cellphone "loudspeaker"?
> > 
> > 
> > I'm looking for something to go into a manufactured
> > product. But, something around that size would work.
> I'll
> > keep looking. 
> > 
> > Thanks
> > Jim
> > 
> 
> 

---------------------------------------------------------------
The Think Different Store
http://www.thinkdifferentstore.com/
For All Your Mac Gear
---------------------------------------------------------------

How can i set to one specific value the ISP frecuency using Codevision and STK500? 
STK500 firmware was updated with AVRStudio 4.12.
If i check Execute User's Program a Command Button called Programm Setting is enabled.
This button has three options : 
    Program Directory and Filename -> i set with stk500.exe path
    Command Line parameters -> i set with -I460.80khz but doesn't work. STK500.exe help says that -I frequency is the way to modify this parameter. I probe it with or without space.
    Working directory -> nothing.
This was my course of action. But it's wrong.

I am programming the flash with AVRSTUDIO, changing the ISP frecuency to 1/4 Crystal (3.68Mhz) each time i need to reprogram the MCU. 
When i set it to 460.8Khz, the systems works, and i can program the flash.
I read many threads about this problem. I understand that the main problem can be the SPIEN fuse and that you must change it to Internal ISP clock. Of course, I did it but Codevisión still can't program the flash. 
Other info. BascomAVR can program the flash without problems.

Ricardo Callejo
SURbyte

[Non-text portions of this message have been removed]

Ricardo Callejo wrote:
> How can i set to one specific value the ISP frecuency using Codevision and STK500? 
> STK500 firmware was updated with AVRStudio 4.12.
> If i check Execute User's Program a Command Button called Programm Setting is enabled.
> This button has three options : 
>     Program Directory and Filename -> i set with stk500.exe path
>     Command Line parameters -> i set with -I460.80khz but doesn't work. STK500.exe help says that -I frequency is the way to modify this parameter. I probe it with or without space.
>     Working directory -> nothing.
> This was my course of action. But it's wrong.
> 
> I am programming the flash with AVRSTUDIO, changing the ISP frecuency to 1/4 Crystal (3.68Mhz) each time i need to reprogram the MCU. 
> When i set it to 460.8Khz, the systems works, and i can program the flash.
> I read many threads about this problem. I understand that the main problem can be the SPIEN fuse and that you must change it to Internal ISP clock. Of course, I did it but Codevisión still can't program the flash. 
> Other info. BascomAVR can program the flash without problems.
> 
> Ricardo Callejo
> SURbyte

Pavel has announced that as of 1.24.9a it will be back to being lower, 
so will work devices that have a default internal RC of 1Mhz :)
-- 
Regards,

Kat.
---------------------------------------------------------------
  K.A.Q. Electronics     Website: www.kaqelectronics.dyndns.org
  IM: Yahoo: PinkyDwaggy MSN: katinka@kaqelectronics.dyndns.org
  For Everything Electronics 		   Phone: 0419 923 731
---------------------------------------------------------------

On Wed, 21 Jun 2006 09:23:02 -0300 you wrote:

>How can i set to one specific value the ISP frecuency using Codevision and STK500? 
>STK500 firmware was updated with AVRStudio 4.12.
>If i check Execute User's Program a Command Button called Programm Setting is enabled.
>This button has three options : 
>    Program Directory and Filename -> i set with stk500.exe path
>    Command Line parameters -> i set with -I460.80khz but doesn't work. STK500.exe help says that -I frequency is the way to modify this parameter. I probe it with or without space.
>    Working directory -> nothing.
>This was my course of action. But it's wrong.
>
>I am programming the flash with AVRSTUDIO, changing the ISP frecuency to 1/4 Crystal (3.68Mhz) each time i need to reprogram the MCU. 
>When i set it to 460.8Khz, the systems works, and i can program the flash.
>I read many threads about this problem. I understand that the main problem can be the SPIEN fuse and that you must change it to Internal ISP clock. Of course, I did it but Codevisión still can't program the flash. 

The SPIEN fuse must be left in its default programmed state or ISP
programming is disabled.


--
Ralph Hilton
http://www.ralphhilton.org
C-Meter: http://www.cmeter.org
FZAOINT http://www.fzaoint.net

I know that SPIEN default value is 0 to allow Low-voltage Serial Programming
Mode is ENABLED but AVRStudio  shows it with a ? inside a gray box. 

Is because AVRISP can’t read it?

 

 

Ricardo Callejo

SURbyte

 

  _____  

De: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] En nombre de
Ralph Hilton
Enviado el: Miércoles, 21 de Junio de 2006 09:34 a.m.
Para: AVR-Chat@yahoogroups.com
Asunto: Re: [AVR-Chat] Setting ISP frecuency from Codevision

 

On Wed, 21 Jun 2006 09:23:02 -0300 you wrote:

>How can i set to one specific value the ISP frecuency using Codevision and
STK500? 
>STK500 firmware was updated with AVRStudio 4.12.
>If i check Execute User's Program a Command Button called Programm Setting
is enabled.
>This button has three options : 
> Program Directory and Filename -> i set with stk500.exe path
> Command Line parameters -> i set with -I460.80khz but doesn't work.
STK500.exe help says that -I frequency is the way to modify this parameter.
I probe it with or without space.
> Working directory -> nothing.
>This was my course of action. But it's wrong.
>
>I am programming the flash with AVRSTUDIO, changing the ISP frecuency to
1/4 Crystal (3.68Mhz) each time i need to reprogram the MCU. 
>When i set it to 460.8Khz, the systems works, and i can program the flash.
>I read many threads about this problem. I understand that the main problem
can be the SPIEN fuse and that you must change it to Internal ISP clock. Of
course, I did it but Codevisión still can't program the flash. 

The SPIEN fuse must be left in its default programmed state or ISP
programming is disabled.

--
Ralph Hilton
http://www.ralphhil <http://www.ralphhilton.org> ton.org
C-Meter: http://www.cmeter. <http://www.cmeter.org> org
FZAOINT http://www.fzaoint. <http://www.fzaoint.net> net

 



[Non-text portions of this message have been removed]

On Wed, 21 Jun 2006 11:28:04 -0300 you wrote:

>I know that SPIEN default value is 0 to allow Low-voltage Serial Programming
>Mode is ENABLED but AVRStudio  shows it with a ? inside a gray box. 
>
>Is because AVRISP can’t read it?

No, it can't write it using ISP. I presume for safety reasons.

>Ricardo Callejo
>
>SURbyte
>
> 
>
>  _____  
>
>De: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] En nombre de
>Ralph Hilton
>Enviado el: Miércoles, 21 de Junio de 2006 09:34 a.m.
>Para: AVR-Chat@yahoogroups.com
>Asunto: Re: [AVR-Chat] Setting ISP frecuency from Codevision
>
> 
>
>On Wed, 21 Jun 2006 09:23:02 -0300 you wrote:
>
>>How can i set to one specific value the ISP frecuency using Codevision and
>STK500? 
>>STK500 firmware was updated with AVRStudio 4.12.
>>If i check Execute User's Program a Command Button called Programm Setting
>is enabled.
>>This button has three options : 
>> Program Directory and Filename -> i set with stk500.exe path
>> Command Line parameters -> i set with -I460.80khz but doesn't work.
>STK500.exe help says that -I frequency is the way to modify this parameter.
>I probe it with or without space.
>> Working directory -> nothing.
>>This was my course of action. But it's wrong.
>>
>>I am programming the flash with AVRSTUDIO, changing the ISP frecuency to
>1/4 Crystal (3.68Mhz) each time i need to reprogram the MCU. 
>>When i set it to 460.8Khz, the systems works, and i can program the flash.
>>I read many threads about this problem. I understand that the main problem
>can be the SPIEN fuse and that you must change it to Internal ISP clock. Of
>course, I did it but Codevisión still can't program the flash. 
>
>The SPIEN fuse must be left in its default programmed state or ISP
>programming is disabled.
>
>--
>Ralph Hilton
>http://www.ralphhil <http://www.ralphhilton.org> ton.org
>C-Meter: http://www.cmeter. <http://www.cmeter.org> org
>FZAOINT http://www.fzaoint. <http://www.fzaoint.net> net
>
> 
>
>
>
>[Non-text portions of this message have been removed]
>
>
>
>
> 
>Yahoo! Groups Links
>
>
>
> 

--
Ralph Hilton
http://www.ralphhilton.org
C-Meter: http://www.cmeter.org
FZAOINT http://www.fzaoint.net