On 12/25/2015 01:58 PM, Troy Dawson wrote: > > > On Fri, Dec 25, 2015 at 11:31 AM, Robert Moskowitz > <rgm at htt-consult.com <mailto:rgm at htt-consult.com>> wrote: > > > > On 12/25/2015 11:18 AM, Troy Dawson wrote: >> Hi, >> Have you looked at the pcduino3 nano lite. >> $15 and it looks like it meets all your specs. >> >> http://www.amazon.com/pcDuino-pcDuino3-Nano-Lite/dp/B00ZEPZGQO/ref=sr_1_1?ie=UTF8&qid=1451059734&sr=8-1&keywords=pcduino3+nano+lite >> >> It has everything in the kernel and uboot and works with Fedora >> 23 with no modifications. >> I've got Yor Linux armv7 build working on it, so I'm quite >> certain it will work with CentOS arm build, but I have not tested it. >> >> There are two downsides to this board. >> 1 - the sata (and power cable) are sold separately > > Ah, I see it does have a sata port. I missed that the first time. > > And it looks like it has the 5V power out that will hopefully > power any HD up to 1A. > > If it uses the same uboot as the pcduino 3 nano, then I can take > the Cubietruck image and dd the appropriate uboot and boot. > > Have you tested it? The big test is to only have uboot on a 4Gb > mSD and the whole image on the Sata HD and see if it switches over > like the Cubieboard does. Otherwise there is a lot of > customization needed. > > > Yes, I've tested it. It used the same uboot and kernel dtd as the > pcduino 3 nano. > I have a couple of the pcduino 3 nano machines and ordered a couple of > the lite's, so I've used both. I used the nano uboot on the lite and > it worked with no modifications. I also did nothing with the kernel > and it worked great. I just ordered one. I will see how it goes and make an acrylic standoff arrangement for it and a drive. I wnet cheap on delivery so I won't see it until the 4th. I am going to see if with Centos, I can control the adunino connectors and have some sensors working off the board. But I really want to find an affordable 4 core as I have mentioned before. > > > I am assuming those 3 posts off to the side are for the serial > console. Nice that they put it off to the side. But that would > mess up a case somewhat. > > >> 2 - It has the worst name I can think of. >> >> >> On Fri, Dec 25, 2015 at 5:33 AM, Robert Moskowitz >> <rgm at htt-consult.com <mailto:rgm at htt-consult.com>> wrote: >> >> The features that have attracted me to ARMv7 are: >> >> 1) Power consumption >> >> My ROI on power savings was 15 mo. with the Cubieboards over >> my current Intel SFF boxes. And along with that is lower UPS >> requirements and heating. I have 5 boards, plus drives >> powered from one USB power supply. >> >> 2) Board size >> >> With boards the same or smaller than a 25" drive, I truly >> have an appliance that can be placed anywhere. >> >> Now there are few ARMv7 boards that meet my exacting >> requirements: 1 or 2 MB ram (depending on appl), 2+ core, and >> SATA interface. >> >> If all I have is USB, then I get the USB/SATA adapter cost >> and powering thrown into the equation. Also a board that has >> been moved into the mainline kernel and distro support. RPi >> stands out as being a pain. 4-port LAN features require >> kernel customization. >> >> I was talking with one manufacture that was meeting my main >> req at $15/board. But they went for a mass-market target and >> dropped the DIY one. I will be talking to them again next >> month. But their board is not in the general sunxi effort. Yet. >> >> >> On 12/25/2015 01:33 AM, Gordan Bobic wrote: >> >> The big problems I have with the majority of the >> development boards are: >> >> 1) Memory >> On 32-bit ARM, the RAM was always limited to 4GB, which >> would be find if there were a significant number of >> devices available that ship with 4GB of RAM (minus the >> various necessary memory holes). But that simply isn't >> the case. I can think of hundreds of devices with <= 1GB >> of RAM. I can think of only about 4 with 3-4GB of RAM (of >> which at least 2 are deprecated and unavailable), >> including ARMv8 which is not limited to 4GB. And two of >> those four are laptops. >> >> 2) Memory Type >> We've been being told since forever that the main reason >> why ARM devices don't come with DIMM sockets is because >> they are 32-bit and DIMMs have 64 data lines. Well, with >> ARMv8 we have those 64 data lines, and yet there are >> precious few devices available featuring DIMM sockets for >> memory. There are in fact probably more dev boards in >> SODIMM form factor than there are those featuring DIMM >> memory sockets. >> >> 3) Board Form Factor >> There are painfully few ARM boards in *TX form factor. >> Off the top of my head I can think of a total of 5, of >> which one is positively ancient and probably no longer >> available (Atmel, IIRC), one is deprecated, the >> manufacturer of the 3rd appears to have gone bust, one is >> on the underpowered side (VIA APC) and the 5th is >> exorbitantly expensive (at €800 there is no incentive at >> all to buy an ARM board instead of a much more powerful, >> more fully featured and better supported Xeon board). >> >> Worse, these variously deficient devices aren't exactly >> cheap, either (well, apart from the Raspberry Pis). I >> find the lack of supply of boards with sensible features >> quite thoroughly baffling, especially since the rock >> bottom features (if they cut any more corners they'd be >> perfect spheres) don't match the relatively high prices. >> >> Instead of leveraging decades of industry standardization >> on the basics such as memory sockets, form factor >> (including power supplies), almost every ARM board >> manufacturer seems to be intent on reinventing their own >> wheels, and doing a pretty poor job of it, even though >> these problems have been thoroughly solved for decades. >> >> Not that I think any manufacturers are listening... >> >> Gordan >> >> On 24/12/15 21:20, Robert Moskowitz wrote: >> >> >> >> On 12/23/2015 07:45 PM, miniNodes Info wrote: >> >> The Lenovator HiKey board Jim mentioned can be >> found here: >> http://www.lenovator.com/product/90.html That is >> a 2gb RAM, 8gb eMMC, >> 8-core ARM64 board. >> >> >> No sata for all that power. >> And draws a lot more power too. >> >> I will continue to wait to see what the Cubietruck >> plus will be and how >> much. They put out the blog on it back in July. And >> then Hans will >> have to get one to make the uboot for it... >> >> >> They also offer a 1gb RAM version as well: >> <http://www.lenovator.com/product/86.html>http://www.lenovator.com/product/86.html >> >> >> Also worth mentioning, the Qualcomm Dragonboard >> 410c finally has been >> restocked and has availability now, located here: >> https://www.arrow.com/en/products/dragonboard410c/arrow-development-tools#page-1 >> >> >> >> Even less in terms of interfaces. >> >> >> The URL for the PINE64 board is simply >> <http://pine64.com>http://pine64.com. That >> product is still being >> developed and funded via Kickstarter, so there is >> no general >> availability on that one quite yet. >> >> >> So, for now, I will stay with the armv7. >> >> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20151225/119b7922/attachment-0006.html>