Hello All.
One lacking piece of documentation on many of the modules here is their robustness and in particular how long they are expected to last under duress.
I have an application in which the G30HDR will be making intermittent transmissions of data (through a 3G chip) once an hour (and go into sleep mode when idle). I have all the power issues sorted out, I just want to know if it can do this forever?! More precisely, at least 5 years. It will be housed in a waterproof enclosure and the temperatures are not expected to go above 45C.
Any ideas?
Iāve got a system based on the ChipworkX that is about 3+ years old now and still working. It runs 24/7 with a GSM modem. No issues to date.
If your code is bug free and you have some form of watchdog just to account for anything untoward, then there is no reason it shouldnāt just run forever at those temperatures.
My unit runs in an 25-40 deg C ambient temperature.
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I have a very similar application where weāre developing an oceanographic instrument that weāre hoping to have run unattended for several years. Unfortunately, I have a somewhat less optimistic view than @ Dave based on my experience with the Raptor board (see https://www.ghielectronics.com/community/forum/topic?id=19245 if youāre interested in some of the issues weāre trying to solve). We have spent an inordinate amount of time making sure our system will recover and continue to run after various weird and random exceptions, reboots, lost characters on the serial port, etc. To be fair, we are still trying to figure out if these issues are in our software, the firmware or random noise issues. I think the answer to your question will depend very strongly on the details of the .NET Micro port and the GHI SDK for the G30 HDR and youāll only find out by extensive long term testing.
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G30 is a very fresh piece of hardware, I really doubt it will meet your expectations. Actually, Iām pretty sure it wonāt.
If you want to stick with NETMF, Iād say go with EMX/G120. From my experience, they were the least troublesome. I actually miss my EMX developing days 
@ Simon from Vilnius - curious where did your conclusion come from?
āFrom my experienceā 
So you never used G30 and very confidently telling other users it is not stable. I hope you see the problem in your answer. The 2015 SDK has been stable from day one. If you think otherwise then please try it before making such comments.
Ask John directly of my issues with your āstableā 2015R1. I didnāt want to pour them publicly here. Maybe I should have done that.
A new thing is never reliable and stable. Sorry Gus, universe doesnāt work that way. You donāt even have G30 out of beta. I guess youāve started working on it maybe a couple months ago. And the guys asks if it could work unattended for FIVE YEARS AT LEAST. Thatās right, five years! Iāve been working with G400 for like two years now, every day, and still canāt say it satisfies my quality requirements (what about a stable TinyBooter, Gus?.. ), and now weāre talking about a thingie that is still warm. Thereās no way Iām gonna believe itās going to be stable and reliable. Thatās why Iām telling this poor guy to be careful with G30.
Still, it is your opinion, not a validated fact.
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@ Gus - Thatās how public forums workā¦
Yes, that is how public forums work. Someone wants help and asks a question. Someone else with no experience answers, often by saying, āI have never done anything like what you are asking about, but here is what I think.ā Sometimes they donāt bother to state that they have no experience, they just blather about their uninformed opinion. Then the thread gets hijacked by opinions and the real answers from people who have experience get lost in the noise.
And, this isnāt a public forum. This is a company and community support forum hosted by a vendor. My gosh, I do not understand why people with such bad experience with the product that they claim does not meet their āstandardsā even stay. It doesnāt help. āFUDā mongers arenāt helpful.
When you put a GHI product in production from a major automobile manufacturer, maybe then you would have input for the OP. When I have a breadboard with jumper wires on my desk and I power the device from a wall-wart or 9v battery, I donāt really have useful input for the guy at the auto manufacturer.
BTW: Any negative replies may receive a response of : [quote=āSimon from Vilniusā]Thatās how public forums workā¦[/quote]
I want to add that the first two responses to this thread seem really good. They have actual experience, take responsibility for their design, give actual data, and have helpful direction. Thanks guys.
Ok, and here comes a ādonāt use if you donāt like itā reply. Didnāt have to wait for longā¦
@ Blue Hair Bob - I am lost, according to you, āthis isnāt a public forumā, but then you say it is. So, is it or is it not?
I have only said, āThat is how public forums work.ā and quoted Simon as saying the same. Reading back through my post, I canāt see where I have said that this is one.
May be it is time for things like IEC 61508 or DO-178B ?
@ everyone - letās get back on topic 8) and for any product extensive testing should be done to determine long term reliability. 8)
Considering they are āflyingā people around the world, I hope they treat all problems like real problems! 