About the lowest we see around here is near freezing (0° C), and we
haven't seen actual freezing temps in at least 3 years or so.
bp
part15sbs{at}gmail{dot}com
On 5/18/2015 7:09 PM, Forrest Christian (List Account) wrote:
What is the lowest temperature that each of you would normally expect
1) Non-industrial temperature range.
2) Note the requirement for a SD card.
3) 2.5W power consumption vs 1W (I sell a LOT based on this alone).
4) Product lifetime - how long are these going to be available (look at the
raspberry Pi - how many revs have there been - all slightly incompatible
with
seconds with 1/4 watt if insulated properly.
From: Forrest Christian (List Account)
Sent: Monday, May 18, 2015 8:09 PM
To: af
Subject: [AFMUG] Enclosure low temperature
What is the lowest temperature that each of you would normally expect to see in
your enclosures?
The reason I'm asking
There are times here when it gets really cold, around 35degrees Fahrenheit. ☺
From: Af [mailto:af-boun...@afmug.com] On Behalf Of Forrest Christian (List
Account)
Sent: Monday, May 18, 2015 10:09 PM
To: af
Subject: [AFMUG] Enclosure low temperature
What is the lowest temperature that each
That was my assumption. I wasn't sure if embedded would be cheaper or not
to put on the boards. Having more memory doesn't hurt either. I do like the
idea of picking my own memory.
I assume running on board memory generates less heat than an microSD slot?
On May 18, 2015 11:35 PM, Forrest
@afmug.com
*Subject:* [AFMUG] Enclosure low temperature
What is the lowest temperature that each of you would normally expect
to see in your enclosures?
The reason I'm asking is that I'm in the process of developing up a
few new products.
To date, all of the packetflux products are designed
We hit –69 here in Utah. (and +116 too, 185 degree spread)
http://www.deseretnews.com/article/116318/PETER-SINKS-UTAHS-COLDEST-SPOT.html?pg=all
From: Bill Prince
Sent: Tuesday, May 19, 2015 7:55 AM
To: af@afmug.com
Subject: Re: [AFMUG] Enclosure low temperature
-40 is almost 100 degrees
PM
To: af
Subject: [AFMUG] Enclosure low temperature
What is the lowest temperature that each of you would normally expect to see
in your enclosures?
The reason I'm asking is that I'm in the process of developing up a few new
products.
To date, all of the packetflux products
8:09 PM
*To:* af mailto:af@afmug.com
*Subject:* [AFMUG] Enclosure low temperature
What is the lowest temperature that each of you would normally expect
to see in your enclosures?
The reason I'm asking is that I'm in the process of developing up a
few new products.
To date, all
, 2015 7:55 AM
*To:* af@afmug.com mailto:af@afmug.com
*Subject:* Re: [AFMUG] Enclosure low temperature
-40 is almost 100 degrees lower than we ever see inside any of our
cabinets. Just checking around our network, about the lowest I see
anytime in the last year has been ~~ 50 degrees.
bp
part15sbs
*Subject:* Re: [AFMUG] Enclosure low temperature
-40 is almost 100 degrees lower than we ever see inside any of our
cabinets. Just checking around our network, about the lowest I see anytime
in the last year has been ~~ 50 degrees.
bp
part15sbs{at}gmail{dot}com
On 5/19/2015 6:50 AM, Chuck
Galacticly speaking, yes.
From: Adam Moffett
Sent: Tuesday, May 19, 2015 8:46 AM
To: af@afmug.com
Subject: Re: [AFMUG] Enclosure low temperature
Is Utah located near Antarctica?
On 5/19/2015 9:59 AM, Chuck McCown wrote:
We hit –69 here in Utah. (and +116 too, 185 degree spread)
http
Fahrenheit. J
*From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Forrest Christian
(List Account)
*Sent:* Monday, May 18, 2015 10:09 PM
*To:* af
*Subject:* [AFMUG] Enclosure low temperature
What is the lowest temperature that each of you would normally expect to
see in your
cold, around 35degrees
Fahrenheit. J
*From:*Af [mailto:af-boun...@afmug.com
mailto:af-boun...@afmug.com] *On Behalf Of *Forrest Christian
(List Account)
*Sent:* Monday, May 18, 2015 10:09 PM
*To:* af
*Subject:* [AFMUG] Enclosure low temperature
What is the lowest
Yeah, took the fam to Disneyland in the middle of winter. Coming from Utah.
We were loving it, everyone else were in coats.
From: Bill Prince
Sent: Tuesday, May 19, 2015 10:52 AM
To: af@afmug.com
Subject: Re: [AFMUG] Enclosure low temperature
That was me a long time ago when I moved from
Lowest we see is mid 20s f
On May 19, 2015 7:48 AM, Chuck McCown ch...@wbmfg.com wrote:
Galacticly speaking, yes.
*From:* Adam Moffett dmmoff...@gmail.com
*Sent:* Tuesday, May 19, 2015 8:46 AM
*To:* af@afmug.com
*Subject:* Re: [AFMUG] Enclosure low temperature
Is Utah located near
What is the lowest temperature that each of you would normally expect to
see in your enclosures?
The reason I'm asking is that I'm in the process of developing up a few new
products.
To date, all of the packetflux products are designed with components rated
-40 to +85C (I.E way cold to way hot).
Yeah... I have no idea if it would be practical, or even work... but it's
an idea.
I can't imagine that -13F would be a problem inside an enclosure around
here, since they're normally going to be enough electronics in there to
make a fair amount of heat, but if there was an extended power outage
-13F would be the minimum I would expect to see. That is pretty much
the minimum OAT here and the enclosures are usually at least 10F warmer.
I would expect internal heating to keep the SD warm. What is the
failure if the SD card is too cold? The unit won't boot until it warms
up? I
There are solutions, it just comes down to bits per dollar.
A SD card + socket probably costs around $5-6 to implement, including
card. For that you get around 4GB (4096MB) or so. Plus if you're picky
about the brand you can get a card with built-in wear leveling, etc, so you
don't have to
Why not NAND flash, or is that what you're talking about? The MT boards
don't seem to have too many problems with temperature as far as the
flash goes.
On 5/18/2015 10:35 PM, Forrest Christian (List Account) wrote:
There are solutions, it just comes down to bits per dollar.
A SD card +
There's a lot of things along those lines:
The current sitemonitor base unit has 128KB of program memory, 3808 *bytes*
(not kb, not mb) of RAM, and an external 1MB flash storage used for
configuration and web page storage. I haven't consumed the entire 1MB
flash, but that's largely because of
Honest question.
Here's the specs on the ODROID-C1:
-
* Amlogic ARM® Cortex®-A5(ARMv7) 1.5Ghz quad core CPUs
* Mali™-450 MP2 GPU (OpenGL ES 2.0/1.1 enabled for Linux and Android)
* 1Gbyte DDR3 SDRAM
* Gigabit Ethernet
* 40pin GPIOs
* eMMC4.5 HS200 Flash Storage slot AND UHS-1 SDR50 MicroSD
I don't know what you have seen but the percentage of components failing at
the lie side of the range is pretty small. Having said that, we might have
temps down to +10 f for three days on the extreme side so what do I know.
On May 18, 2015 9:09 PM, Forrest Christian (List Account)
And since the card is going to be trapped in a similarly sized enclosure
with slightly more power consumption, it's probably a good indication.
On Mon, May 18, 2015 at 8:31 PM, Jeremy jeremysmi...@gmail.com wrote:
Yeah, that is why I mentioned that it was the internal site monitor
temperature.
, 2015 9:32 PM
*To:* af@afmug.com
*Subject:* Re: [AFMUG] Enclosure low temperature
This winter was pretty cold. For about a week straight in the middle of
January and again in February, I had a few base units reporting under 0F
every night. And I know the outside air temp was -20 to -25F
Lots depends on enclosure and its size. For heat dissipation you usually
size them larger. You could size smaller and depending what device is
inside my supply some heat.Enclosure heaters start at around 25.00 at
Automation Direct fyi
Jaime Solorza
On May 18, 2015 8:34 PM, Adam Moffett
I actually plan on shipping with the SD card inside (i.e. not intended to
be end-user removable), but I definitely was thinking that adding an
extended temp range version for an appropriate additional price would be
an option.
On Mon, May 18, 2015 at 8:14 PM, Adam Moffett dmmoff...@gmail.com
:* Monday, May 18, 2015 9:32 PM
*To:* af@afmug.com
*Subject:* Re: [AFMUG] Enclosure low temperature
This winter was pretty cold. For about a week straight in the middle of
January and again in February, I had a few base units reporting under 0F
every night. And I know the outside air temp was -20
Yep, NAND flash is what I'm talking about. At quantities matching product
sales, 64MB is about as big as you can get at the same pricing as that 4GB
SD card. There are some less expensive parallel parts available, but for
various reasons, none of them is suitable for this design (the cost of
We see -20F ambient once a winter most years.
On May 18, 2015 10:09 PM, Forrest Christian (List Account)
li...@packetflux.com wrote:
What is the lowest temperature that each of you would normally expect to
see in your enclosures?
The reason I'm asking is that I'm in the process of developing
Why not both?
On May 18, 2015 7:35:37 PM AKDT, Forrest Christian (List Account)
li...@packetflux.com wrote:
There are solutions, it just comes down to bits per dollar.
A SD card + socket probably costs around $5-6 to implement, including
card. For that you get around 4GB (4096MB) or so. Plus
Yeah, that could be useful. But why not just store stuff like this in
RAM? Perfect example is the throughput monitoring statistics on Canopy.
It obviously doesn't persist across reboots. I know you probably don't
have a lot of RAM to work with though.
Let me give you another example
Wouldn't the simple answer be to offer the device and SD card as
separate items? Then on your site you say, If you want to have storage
with the same industrial temperature range as the rest of my product
line then buy this card, or supply your own at your own risk.
Everybody selling fiber
-13f isn't that hateful. It's not that cold here :P
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On May 18, 2015 10:14 PM, Adam Moffett dmmoff...@gmail.com wrote:
Wouldn't the simple answer be to offer the device and SD card as separate
The danger you have to consider is a cold start, such as if the power
was off for awhile.
On 5/18/2015 10:32 PM, George Skorup wrote:
This winter was pretty cold. For about a week straight in the middle
of January and again in February, I had a few base units reporting
under 0F every night.
Is there no solution for embedded memory instead of a card slot? I am
assuming it is cost prohibitive or it does not work for your project.
That being said there have been days in the winter where we see -5° for
days in a row. It doesn't happen often. Even with heat generated from
equipment, I am
SD/CF cards freeze in cold weather :(
On May 18, 2015 6:09:07 PM AKDT, Forrest Christian (List Account)
li...@packetflux.com wrote:
What is the lowest temperature that each of you would normally expect
to
see in your enclosures?
The reason I'm asking is that I'm in the process of developing up
The coldest that I saw INSIDE our enclosures this year (accordint to
SiteMonitor internal temperature) was 0-C (32-F). Last year was much
colder but back then I was using the APC for temperature and backup, and
that graph data has all been deleted. I can't say for sure if the
temperature in the
That probe is a lot warmer than the enclosure.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On May 18, 2015 10:23 PM, Jeremy jeremysmi...@gmail.com wrote:
The coldest that I saw INSIDE our enclosures this year (accordint to
SiteMonitor internal
Ok, but Forrest is using all industrial components that are rated to
-40C. Are you saying he should add a resistor just to pre-heat the SD slot?
...ok maybe you're on to something there. How about that Forrest? Would
a 10cent resistor and 2 minute pre-boot warmup eliminate any issue?
On
that cold.
From: George Skorup
Sent: Monday, May 18, 2015 9:32 PM
To: af@afmug.com
Subject: Re: [AFMUG] Enclosure low temperature
This winter was pretty cold. For about a week straight in the middle of January
and again in February, I had a few base units reporting under 0F every night.
And I
Yeah, that is why I mentioned that it was the internal site monitor
temperature. Forrest knows almost exactly how far off it is from the
ambient temperature.
On Mon, May 18, 2015 at 8:28 PM, Josh Luthman j...@imaginenetworksllc.com
wrote:
That probe is a lot warmer than the enclosure.
Josh
This winter was pretty cold. For about a week straight in the middle of
January and again in February, I had a few base units reporting under 0F
every night. And I know the outside air temp was -20 to -25F. Obviously
take the base unit's temp reading with a grain of salt because it's
clearly
You could get around that by putting a heater on board to warm up the
components, like the epmp has.
On Mon, May 18, 2015 at 9:34 PM, Adam Moffett dmmoff...@gmail.com wrote:
The danger you have to consider is a cold start, such as if the power was
off for awhile.
On 5/18/2015 10:32 PM,
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