Hi Guys..
I am considering using EMC2 (or part of it) in a mobile application that
defines the term "rugged".
The application itself is pretty simple so I am not worried about the
software. I am worried about the survival of the hardware.
The equipment will be mounted in a box on a piece of
out
moisture as per the above method.
dan k
>> Date: Sat, 16 Jul 2011 18:58:48 -0400
>> From: e...@dc9.tzo.com
>> To: emc-users@lists.sourceforge.net
>> Subject: [Emc-users] Using a PC in extended temperature ranges and mobile
application
>>
>>
>> Hi Gu
es in a totally enclosed box, though.
> Date: Sat, 16 Jul 2011 18:58:48 -0400
> From: e...@dc9.tzo.com
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] Using a PC in extended temperature ranges and mobile
> application
>
>
> Hi Guys..
>
> I am consi
On 16 July 2011 23:58, Dave wrote:
> Do you guys have any suggestions?
I suspect that a layer of conformal coating on the PC motherboard
after assembly (including attaching connectors) would mean that that
didn't care about condensation.
The display is likely to be the problem. You might even w
On Saturday, July 16, 2011 10:03:15 PM Dave did opine:
> Hi Guys..
>
> I am considering using EMC2 (or part of it) in a mobile application that
> defines the term "rugged".
>
> The application itself is pretty simple so I am not worried about the
> software. I am worried about the survival of t
Dave, I wouldn't waste my time trying to beef up a consumer-grade
computer. There are many industrial- and military-grade i86 computers
available commercially that you could start from.
The rub is your characterization "Being a typical customer, they want to
keep the costs down but they also wa
gt; You don't have to go explosion proof, but can copy their techniques.
>
> I would be leery of putting batteries in a totally enclosed box, though.
>
> > Date: Sat, 16 Jul 2011 18:58:48 -0400
> > From: e...@dc9.tzo.com
> > To: emc-users@lists.sourceforge.
Dave wrote:
> I'd like to use as many off the shelf devices as possible - PC boards
> etc... if possible.
>
> Being a typical customer, they want to keep the costs down but they also
> want it to work and operate reliably.
>
> I've had good luck using conventional industrial controls on machine
I have seen electronics on sea buoys. It's mounted in a simple PVC
box, then all wires are connected, then it is filled to the edge with
some silicone gel, after setting, the lid is screwed on. Even all
heatsinks are completely submerged in the gel.
though.
>
>
>> Date: Sat, 16 Jul 2011 18:58:48 -0400
>> From: e...@dc9.tzo.com
>> To: emc-users@lists.sourceforge.net
>> Subject: [Emc-users] Using a PC in extended temperature ranges and mobile
>> application
>>
>>
>> Hi Guys..
>>
&g
I have seen conformal coating but I have no experience applying it. I
would think it could create hot spots on some motherboards if it was not
carefully applied.
Does anyone have any experience in testing for condensation issues?
I have done simple temperature tests on some systems to check f
On 7/16/2011 10:18 PM, gene heskett wrote:
> On Saturday, July 16, 2011 10:03:15 PM Dave did opine:
>
>
>> Hi Guys..
>>
>> I am considering using EMC2 (or part of it) in a mobile application that
>> defines the term "rugged".
>>
>> The application itself is pretty simple so I am not worried abo
On 7/16/2011 10:21 PM, Kent A. Reed wrote:
> Dave, I wouldn't waste my time trying to beef up a consumer-grade
> computer. There are many industrial- and military-grade i86 computers
> available commercially that you could start from.
>
> The rub is your characterization "Being a typical customer,
On 17 July 2011 03:01, andy pugh wrote:
> The display is likely to be the problem. You might even want to
> consider a CRT, because at least then condensation can't get behind
> the glass.
Thinking about this some more, you might need to use a CRT, as LCD
displays stop working when they get cold
gt; Date: Sat, 16 Jul 2011 18:58:48 -0400
>>> From: e...@dc9.tzo.com
>>> To: emc-users@lists.sourceforge.net
>>> Subject: [Emc-users] Using a PC in extended temperature ranges and mobile
>>> application
>>>
>>>
>>> Hi Guys..
>>
On 7/17/2011 5:36 AM, Jaap Stolk wrote:
> I have seen electronics on sea buoys. It's mounted in a simple PVC
> box, then all wires are connected, then it is filled to the edge with
> some silicone gel, after setting, the lid is screwed on. Even all
> heatsinks are completely submerged in the gel.
>
2011/7/17 Dave :
>
> When you say "gel", do you mean the desiccant gel beads? That is
> very interesting..
That can be any mineral oil - they are not conductive. There are many
vids on Youtube, how PCs are put in oil and they keep working. Even
gasoline is non-conductive, so You can submerge
On Sunday, July 17, 2011 10:51:23 AM Dave did opine:
> On 7/17/2011 5:36 AM, Jaap Stolk wrote:
> > I have seen electronics on sea buoys. It's mounted in a simple PVC
> > box, then all wires are connected, then it is filled to the edge with
> > some silicone gel, after setting, the lid is screwed o
On Sat, 2011-07-16 at 23:10 -0700, Karl Cunningham wrote:
> Dave wrote:
> > I'd like to use as many off the shelf devices as possible - PC boards
> > etc... if possible.
> >
> > Being a typical customer, they want to keep the costs down but they also
> > want it to work and operate reliably.
> >
On Sun, Jul 17, 2011 at 1:19 PM, Dave wrote:
> When you say "gel", do you mean the desiccant gel beads?
No, like gene, I meant something like this:
http://fongyong.en.alibaba.com/product/431565542-212336882/RTV_2_electrical_electronic_silicone_potting_casting_compounds_sealant.html
Although they
Jaap Stolk wrote:
> On Sun, Jul 17, 2011 at 1:19 PM, Dave wrote:
>> When you say "gel", do you mean the desiccant gel beads?
>
> No, like gene, I meant something like this:
> http://fongyong.en.alibaba.com/product/431565542-212336882/RTV_2_electrical_electronic_silicone_potting_casting_compounds_
Jaap Stolk wrote:
> On Sun, Jul 17, 2011 at 1:19 PM, Dave wrote:
>> When you say "gel", do you mean the desiccant gel beads?
>
> No, like gene, I meant something like this:
> http://fongyong.en.alibaba.com/product/431565542-212336882/RTV_2_electrical_electronic_silicone_potting_casting_compounds_
On 7/17/2011 9:25 AM, Viesturs Lācis wrote:
> 2011/7/17 Dave:
>
>> When you say "gel", do you mean the desiccant gel beads? That is
>> very interesting..
>>
> That can be any mineral oil - they are not conductive. There are many
> vids on Youtube, how PCs are put in oil and they keep
On 7/17/2011 7:07 AM, andy pugh wrote:
> On 17 July 2011 03:01, andy pugh wrote:
>
>
>> The display is likely to be the problem. You might even want to
>> consider a CRT, because at least then condensation can't get behind
>> the glass.
>>
> Thinking about this some more, you might need
On Sunday, July 17, 2011 07:25:15 PM dave did opine:
> On Sat, 2011-07-16 at 23:10 -0700, Karl Cunningham wrote:
> > Dave wrote:
> > > I'd like to use as many off the shelf devices as possible - PC
> > > boards etc... if possible.
> > >
> > > Being a typical customer, they want to keep the costs
On Sun, Jul 17, 2011 at 11:56 AM, Jaap Stolk wrote:
> it's actually called "silicone potting", a google image search turns
> up many examples.
Be careful that it's the electrical-compatible---ordinary commercial
silicon RTV compounds release acetic acid and will corrode metals
(connectors, wires
2011/7/17 Dave :
>
> I don't know about using gasoline what if a technician who is
> smoking opens the control panel.. 8-0
>
The gasoline part was not meant to be serious :))) I just remembered
that my car had fuel pump right in gasoline tank and the wires were
not sealed, which just proves th
t;>> Date: Sat, 16 Jul 2011 18:58:48 -0400
>>> From: e...@dc9.tzo.com
>>> To: emc-users@lists.sourceforge.net
>>> Subject: [Emc-users] Using a PC in extended temperature ranges and mobile
>>>
> application
>
>>>
>>> Hi G
On 18 July 2011 13:57, Dave wrote:
> Do you use real lacquer (I think that Minwax still sells it) or do you
> use some type of polyurethane finish or something like that??
As an example, there seem to be a number of dedicated laquers for
coating PCBs, all with slightly different properties.
http
I've heard of people running into trouble with submersion cooled computers -
the liquid increases the capacitance between high frequency traces and
causes the computer to lock up.
I assume that PCB conformal coating is specifically designed to avoid this
problem.
Mark
On Jul 17, 2011 4:34 PM, "Da
On 7/17/2011 7:29 PM, gene heskett wrote:
> On Sunday, July 17, 2011 07:25:15 PM dave did opine:
>
>
>> On Sat, 2011-07-16 at 23:10 -0700, Karl Cunningham wrote:
>>
>>> Dave wrote:
>>>
I'd like to use as many off the shelf devices as possible - PC
boards etc... if possib
On Monday, July 18, 2011 03:49:40 PM Dave did opine:
> On 7/17/2011 7:29 PM, gene heskett wrote:
> > On Sunday, July 17, 2011 07:25:15 PM dave did opine:
> >> On Sat, 2011-07-16 at 23:10 -0700, Karl Cunningham wrote:
> >>> Dave wrote:
> I'd like to use as many off the shelf devices as possibl
On 7/18/2011 3:52 PM, gene heskett wrote:
> On Monday, July 18, 2011 03:49:40 PM Dave did opine:
>
>
>> On 7/17/2011 7:29 PM, gene heskett wrote:
>>
>>> On Sunday, July 17, 2011 07:25:15 PM dave did opine:
>>>
On Sat, 2011-07-16 at 23:10 -0700, Karl Cunningham wrote:
On Monday, July 18, 2011 05:42:32 PM Dave did opine:
> Yes.. all you can do is to make it more difficult to remove.
>
> If someone wants it badly enoughthey will get it eventually.
>
> Dave
>
As long as the customer understands that. Some never do. :( So CYA.
Cheers, gene
--
"There are
On Mon, 2011-07-18 at 17:43 -0400, gene heskett wrote:
> On Monday, July 18, 2011 05:42:32 PM Dave did opine:
>
> > Yes.. all you can do is to make it more difficult to remove.
> >
> > If someone wants it badly enoughthey will get it eventually.
> >
> > Dave
> >
> As long as the customer un
On 7/18/2011 5:43 PM, gene heskett wrote:
> On Monday, July 18, 2011 05:42:32 PM Dave did opine:
>
>
>> Yes.. all you can do is to make it more difficult to remove.
>>
>> If someone wants it badly enoughthey will get it eventually.
>>
>> Dave
>>
>>
> As long as the customer understand
On 7/18/2011 6:58 PM, dave wrote:
> I would/will be interesting to revisit this in 2-3 years and see how it
> worked out.
>
I'll keep that in mind and try and revisit this with the group down the
road.
A solar panel trickle charger is a very good idea.
Dave
---
On 17.07.11 06:35, Dave wrote:
> Does anyone have any experience in testing for condensation issues?
When I finished off the development of the first automotive digital
clock used by Ford here in Australia [1], certification testing included
temperature, humidity, vibration, and dust testing.
The
On 7/22/2011 5:43 AM, Erik Christiansen wrote:
> On 17.07.11 06:35, Dave wrote:
>
>> Does anyone have any experience in testing for condensation issues?
>>
> When I finished off the development of the first automotive digital
> clock used by Ford here in Australia [1], certification testi
On 22.07.11 10:30, Dave wrote:
> Interesting.. so did you have to make any design changes to meet the
> 95% RH requirements??
No, the LED clock dissipated enough heat to avoid condensation at 95%
RH. With purely dissipative dropping of the 12v to the <2v across each
display segment, it effective
Dave,
Any possibility of sharing what you indtend to use the equipment for on the
rig? I am a mining engineer in the cement industry and have considered
placing remote electronics on drilling rigs and the mining equipment. Too
many other fires to hold back in the meantime have kept me from pursu
On 7/26/2011 9:28 AM, BRIAN GLACKIN wrote:
> Dave,
>
> Any possibility of sharing what you indtend to use the equipment for on the
> rig? I am a mining engineer in the cement industry and have considered
> placing remote electronics on drilling rigs and the mining equipment. Too
> many other fire
On Sun, 17 Jul 2011 06:35:22 -0400
Dave wrote:
> Does anyone have any experience in testing for condensation issues?
I operate a couple of 802.11 wireless access points outdoors, year
round. They supply my internet service, so they are "mission critical".
I'm in Maryland, so temps range from +10
On Sat, 2011-07-30 at 11:23 -0400, Matt Shaver wrote:
> On Sun, 17 Jul 2011 06:35:22 -0400
> Dave wrote:
>
> > Does anyone have any experience in testing for condensation issues?
>
> I operate a couple of 802.11 wireless access points outdoors, year
> round. They supply my internet service, so t
I can't divulge great details since we are building the first machine
> and we have competitors that did not get the business, but would like to
> grab it if possible.
>
It sounds like an interesting project.
In the research I have done with remote machine monitoring (and GPS
breadcrumbing) most
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