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 worry about that stuff. But you have the temperature issue.
For the same price, you only get 32MB (0.032GB) of soldered in memory. Would 32MB be enough? Probably, but there are a *lot* of things you can do if you have seemingly unlimited storage. On Mon, May 18, 2015 at 8:33 PM, Vince West <vi...@shelbybb.com> wrote: > 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 not sure how well it would work or how long it would last > being so close to the limit for extended periods of time. > 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 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 box was lower, but I doubt it would go too far below 32 >> with all the equipment and batteries in the boxes. >> >> On Mon, May 18, 2015 at 8:14 PM, Adam Moffett <dmmoff...@gmail.com> >> wrote: >> >>> 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 to the radio with an SFP slot does it that way. >>> I always buy their SFP module. >>> >>> >>> On 5/18/2015 10:09 PM, Forrest Christian (List Account) 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 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). I'd like to retain this >>> rating, but I'm running into a minor snag: >>> >>> For storage, I'm planning on integrating a SD card (probably microSD) >>> in a socket. I only need a GB or so, and SD card memory is inexpensive at >>> that range. >>> >>> Unfortunately, all the reasonably priced SD cards are only rated down >>> to about -25C or -13F. which are about ~$3 in qty. "Industrial >>> temperature range" ones which are good down to -40C/F are available but >>> they add at least $30 to the cost for non-name brand, and even more for >>> known brands. When you're talking about a $100 end-user price, a $30 1GB >>> SD card seems excessive - and probably isn't even possible if I want to >>> meet the $100 price with some margin. >>> >>> So, I'm currently playing the 'what options do I have' game. I hate >>> to ship a product only rated down to -25C/-13F, but I know for at least a >>> large chunk of my customer base they never see below this temperature, >>> especially when you add a watt of power dissipation in the case with the >>> device. Which leads me back to my original question: What's the lowest >>> temperature most people would expect to see inside their enclosures. >>> >>> -- >>> *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* >>> Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 >>> forre...@imach.com | http://www.packetflux.com >>> <http://www.linkedin.com/in/fwchristian> >>> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >>> >>> >>> >> -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 forre...@imach.com | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
