[TriEmbed] temp measurements Re: anybody want to give a talk at TriLUG? & RPI 3 availability
Pete Soper
pete at soper.us
Thu Mar 31 17:48:49 CDT 2016
This reminds me. A few weeks ago at the "Raspberry Pi, Arduino and
Friends" event at Splatspace two folks brought in Raspberry Pi 3s. One
had small aluminum heatsinks on the main chips and the other didn't.
Here are a couple pictures from my FLIR 165:
http://triembed.org/images/RPI3-TEMPS/index.html
The emissivity is set too high and seven other variables would make it
unwise to put much stock in the absolute temp measurements. But this
certainly shows a contrast. Both systems ran a simple C program that
forked itself into multiple looping processes to create a system load
factor of five. After a couple minutes the temperature was measured,
twiddling around to find the hottest spot. We were fascinated by the
fact that the board surrounding the processor/ram chip was hotter than
the heat sink itself, while with the board having no heat sink the
opposite was true. We actually rushed the high temperature measurement
for the sake of not flirting with possible damage. In my opinion it
would be unwise to run an RPI 3 in a confined space or with high ambient
air temperature without a heatsink.
-Pete
On 03/31/2016 05:49 PM, Rodney Radford wrote:
>
> I had two Raspberry Pi 3s arrive from Sparkfun today.
>
> I'm out if town, so I will not personally see them until Sunday night.
>
> On Mar 15, 2016 2:13 PM, "Pete Soper via TriEmbed"
> <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
>
> I knew I forgot something last night.
>
> Triangle Embedded Interest People:
>
> Please read Jeremy's note below. If you're interested in banding
> together, coordinate with Jeremy.
>
> Jeremy: Sorry if I implied I might be able participate. I can't.
>
> I did ping around and determine that nobody except one person on
> the list has a Raspberry Pi 3 in hand. But I got an MCM
> Electronics catalog yesterday and they're advertising them for
> $35. I just checked their web site and this item is listed as "in
> stock".
>
> Regards,
> Pete
>
> On 03/08/2016 09:34 PM, Jeremy Davis wrote:
>> Pete,
>>
>> July 14th 7pm is currently available for an RPi return engagement
>> or broader theme with TriLUG, which is far enough out we could
>> plan well. I can go around to several of the local groups as well.
>>
>> We would probably want to secure one of the larger lecture halls
>> at NCSU.
>>
>> Let me know if folks seem interested :-)
>>
>> Jeremy Davis
>> TriLUG PR
>>
>>
>> On Sunday, February 28, 2016, Pete Soper <pete at soper.us
>> <mailto:pete at soper.us>> wrote:
>>
>> Thanks, Jeremy. I blew away our local links and made the
>> whole thing a link to the URL you provided.
>>
>> The "installathon" at Splatspace the weekend after that
>> presentation was amazing, too. I think it helped boost
>> awareness in the area. Planning for those two events started
>> at Splatspace months earlier. Justis Peters' made the
>> arrangements between the two organizations.
>>
>> I'll float the idea of a "return engagement" to Splatspace
>> and the other area groups and see if a team can be assembled.
>> They might want to offer a broader theme (although by then
>> the Zero may be past the "made of unobtanium" phase and the
>> RPI 3 might be out).
>>
>> -Pete
>>
>> On 02/28/2016 01:18 PM, Jeremy Davis wrote:
>>> Pete,
>>>
>>> The video of the Raspberry Pi talk at TriLUG is available
>>> here. This RPi talk drew the highest attendance I have ever
>>> seen at TriLUG with about 140+ people.
>>>
>>> http://www.trilug.org/2013-01-10/Raspberry_Pi
>>>
>>> Members of TriLUG recently requested another Raspberry Pi
>>> talk. If you know anyone interested in presenting please let
>>> me know.
>>>
>>> Jeremy Davis
>>> TriLUG PR
>>>
>>> On Sunday, February 28, 2016, Pete Soper via TriEmbed
>>> <triembed at triembed.org> wrote:
>>>
>>> I found some old talks and put them at the bottom of the
>>> meetings archive page
>>> <http://triembed.org/blog/?page_id=62>:
>>>
>>> * Jan 10, 2013 - Intro to Raspberry Pi (first part by
>>> me, RPI Workstation by Alan DIpert and Clinton
>>> Dreisbach, Open Computer Vision by Peter Reintjes).
>>> * Dec 10, 1212 - Intro to OSH Park (me)
>>> * Dec 3, 1212 - Raspberry Pi Hacks (yup)
>>>
>>> The March 14th meeting agenda is wide open. As of this
>>> meeting TriEmbed in its current form will be approaching
>>> it's third birthday. Ideas are welcome to make the April
>>> 11 meeting special.
>>>
>>> -Pete
>>>
>>>
>>>
>>> --
>>> Jeremy Davis
>>> @jeremydavis0_0
>>> www.linkedin.com/in/jeremydavisprofile/
>>> <http://www.linkedin.com/in/jeremydavisprofile/>
>>> www.trianglecareerdevelopment.com
>>> <http://www.trianglecareerdevelopment.com>
>>>
>>
>>
>>
>> --
>> Jeremy Davis
>> @jeremydavis0_0
>> www.linkedin.com/in/jeremydavisprofile/
>> <http://www.linkedin.com/in/jeremydavisprofile/>
>> www.trianglecareerdevelopment.com
>> <http://www.trianglecareerdevelopment.com>
>>
>
>
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