Many processors and fpgas have built in thermal diodes. There are also many 
supporting devices that control fans or have I2C/SPI interfaces.

I am looking for a small off-the-shelf board or instrument that I can use on 
existing boards by just connecting to the internal diode and reading the 
temperature on a display. 

I'm not looking for advice on how to build my own or how to interpolate with 
a multimeter etc. I don't want to build a board etc. I just want the "lazy" 
solution

I have searched on Google and found nothing that is suitable.

Can anyone point me to an off-the-shelf" solution?

Thx

Al

On 28 Aug., 03:53, Al Clark <acl...@danvillesignal.com> wrote:
> Many processors and fpgas have built in thermal diodes. There are also many
> supporting devices that control fans or have I2C/SPI interfaces.
>
> I am looking for a small off-the-shelf board or instrument that I can use on
> existing boards by just connecting to the internal diode and reading the
> temperature on a display.
>
> I'm not looking for advice on how to build my own or how to interpolate with
> a multimeter etc. I don't want to build a board etc. I just want the "lazy"
> solution
>
> I have searched on Google and found nothing that is suitable.
>
> Can anyone point me to an off-the-shelf" solution?
>
> Thx
>
> Al

http://www.omega.com/Temperature/pdf/CYD200.pdf

don't think you'll like the price ...

-Lasse

On 28.08.2012 03:53, Al Clark wrote:
> Many processors and fpgas have built in thermal diodes. There are also many
> supporting devices that control fans or have I2C/SPI interfaces.
>
> I am looking for a small off-the-shelf board or instrument that I can use on
> existing boards by just connecting to the internal diode and reading the
> temperature on a display.

What made you assume that those diodes would be routed to external pins 
of those devices, for your hypothetical device to connect to?

=?ISO-8859-15?Q?Hans-Bernhard_Bröker?= <H...@t-online.de> wrote in
news:a...@mid.dfncis.de: 

> On 28.08.2012 03:53, Al Clark wrote:
>> Many processors and fpgas have built in thermal diodes. There are also
>> many supporting devices that control fans or have I2C/SPI interfaces.
>>
>> I am looking for a small off-the-shelf board or instrument that I can
>> use on existing boards by just connecting to the internal diode and
>> reading the temperature on a display.
> 



> What made you assume that those diodes would be routed to external pins 
> of those devices, for your hypothetical device to connect to?
> 

Because in my case, I routed the thermal diode to a test header. I already 
have the boards.

Al

On 8/27/2012 8:53 PM, Al Clark wrote:
> Many processors and fpgas have built in thermal diodes. There are also many
> supporting devices that control fans or have I2C/SPI interfaces.
>
> I am looking for a small off-the-shelf board or instrument that I can use on
> existing boards by just connecting to the internal diode and reading the
> temperature on a display.
>
> I'm not looking for advice on how to build my own or how to interpolate with
> a multimeter etc. I don't want to build a board etc. I just want the "lazy"
> solution
>
> I have searched on Google and found nothing that is suitable.
>
> Can anyone point me to an off-the-shelf" solution?
>
> Thx
>
> Al
>
LM95235 Eval board. Doesn't have a display with temp, but has USB (and 
presumably software that will show the temp.

One in stock at DigiKey for $120US
http://www.digikey.com/product-search/en/programmers-development-systems/eval-boards-sensors/2622557?k=lm95235

I used the LM86 eval board ($100) for monitoring the temp of a Xilinx 
FPGA during initial board bringup and it worked great. DigiKey doesn't 
have any in stock, though.

Paul

>On 8/27/2012 8:53 PM, Al Clark wrote:
>> Many processors and fpgas have built in thermal diodes. There are also
many
>> supporting devices that control fans or have I2C/SPI interfaces.
>>
>> I am looking for a small off-the-shelf board or instrument that I can
use on
>> existing boards by just connecting to the internal diode and reading
the
>> temperature on a display.
>>
>> I'm not looking for advice on how to build my own or how to interpolate
with
>> a multimeter etc. I don't want to build a board etc. I just want the
"lazy"
>> solution
>>
>> I have searched on Google and found nothing that is suitable.
>>
>> Can anyone point me to an off-the-shelf" solution?
>>
>> Thx
>>
>> Al
>>
>LM95235 Eval board. Doesn't have a display with temp, but has USB (and 
>presumably software that will show the temp.
>
>One in stock at DigiKey for $120US
>http://www.digikey.com/product-search/en/programmers-development-systems/eval-boards-sensors/2622557?k=lm95235
>
>I used the LM86 eval board ($100) for monitoring the temp of a Xilinx 
>FPGA during initial board bringup and it worked great. DigiKey doesn't 
>have any in stock, though.
>
>Paul
>

In a similar vein, the LM89 eval board is listed at $78 on TI's site, but
availability might be a problem:

  http://www.ti.com/tool/lm89eval


If you're willing to spend a little time on this, the other way to approach
it might be to pick up a raspberry pi, wire an lm86 or similar to its I2C
bus, and connect the diode to that. We picked up a few for tinkering with
at work, and they're quite impressive (if you overlook their USB power
delivery kludges) - we've connected a few one-wire, I2C and SPI devices to
them just to see what's what, and it really does appear to be quite simple
to get simple devices up and running.	   
					
---------------------------------------		
Posted through http://www.EmbeddedRelated.com

I ended up with an LM95231 Eval Board from TI. I think this is similar to 
the other eval boards that were suggested. 

It seems like an opportunity for someone. 

Thanks

Al





Paul Urbanus <u...@urbonix.com> wrote in
news:w...@megapath.net: 

> On 8/27/2012 8:53 PM, Al Clark wrote:
>> Many processors and fpgas have built in thermal diodes. There are also
>> many supporting devices that control fans or have I2C/SPI interfaces.
>>
>> I am looking for a small off-the-shelf board or instrument that I can
>> use on existing boards by just connecting to the internal diode and
>> reading the temperature on a display.
>>
>> I'm not looking for advice on how to build my own or how to interpolate
>> with a multimeter etc. I don't want to build a board etc. I just want
>> the "lazy" solution
>>
>> I have searched on Google and found nothing that is suitable.
>>
>> Can anyone point me to an off-the-shelf" solution?
>>
>> Thx
>>
>> Al
>>
> LM95235 Eval board. Doesn't have a display with temp, but has USB (and 
> presumably software that will show the temp.
> 
> One in stock at DigiKey for $120US
> http://www.digikey.com/product-search/en/programmers-development-systems/
> eval-boards-sensors/2622557?k=lm95235 
> 
> I used the LM86 eval board ($100) for monitoring the temp of a Xilinx 
> FPGA during initial board bringup and it worked great. DigiKey doesn't 
> have any in stock, though.
> 
> Paul