arm-netbook May 2017

arm-netbook@lists.phcomp.co.uk

47 participants
94 discussions

3D printing requirements
by Vincent 19 May '17

19 May '17

Hi Luke, I saw your recent update on crowdsupply. Could you please list the specific requirements you need for 3d printing? Otherwise it will be difficult to help you out. Ideally, you can provide us with the following data: - maximum print dimension in width X length (e.g., 200x200mm) - minimum wall thickness (e.g., 1mm) - smallest detail (e.g., 0.3mm) Also, having a single component of the casework as a sample print could be helpful (meaning: if this prints OK, we would expect that all the other components are of equal quality). I value your quality-first approach and do not want to settle for less. We have a couple of decent 3dprinting suppliers in Germany which I did use in the past (though, for tiny objects only). I could offer to get quotes from them and/or do some negotiating. Also, check their quality based on the sample component to print (which I could also send to you). Another approach could be to distribute the load: There are many hacker/maker spaces around the world. Many of them do have 3d printers and offer printing at much cheaper rates. I do have good friends at a maker space with an Ultimaker 2+ and most of the time the printer is idle. Since they are a registered voluntary association, they are always interested in receiving minor donations in return for services. I could ask them to print a couple of cases? Another idea: How about buying 10 Ultimaker+ and selling them via crowdsupply as part of the EOMA68 campaign (with a reasonable deduction, due to the reason being used)? You did address PLA a couple of times. How about the resin option? Any specifics? How many people ordered it? Cheers, Vincent

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beowulf clustering EOMA68
by Luke Kenneth Casson Leighton 19 May '17

19 May '17

On Fri, May 19, 2017 at 5:08 AM, Neil Jansen <njansen1(a)gmail.com> wrote: > On Thu, May 18, 2017 at 11:29 PM, Luke Kenneth Casson Leighton > <lkcl(a)lkcl.net> wrote: > >> size, power budget. in about 5-8 years it won't be an issue. >> EOMA200 is better suited to clustering. bigger PCB size and a much >> higher power budget. > > I'm not really concerned about size. What do you mean by power budget? 5W per card in the current standard, with an "option" to increase that to 10W *if the housing supports it*. that means having sufficient thermal cooling/ > What's to stop me or anyone else from buying, say, 8x EOMA68's and > networking them? nothing. > (gigabit or otherwise)? no ethernet. USB3 *if the Card supports it*... which the A20 doesn't. > Assuming that a backplane is the > only thing in the way, that could happen pretty easily. The only other > thing missing at that point would be availability of the 1st gen cards, but > that should get better in time, I'd think. Cost wise it's still less than > an Intel NUC, if you're not counting the cost of the backplane. you can't get a 1000 pin 15W *processor* nor can you get 128-bit-wide DDR3 memory bus bandwidth into an EOMA68 case. ok the latter you might be able to do if you used 4x 32-bit-wide LPDDR3 RAM ICs but the entire 5W power budget would be blown on running the RAM even at only around 1066mhz.

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rk3399 what full schematics does lkcl want?
by ronwirring＠Safe-mail.net 18 May '17

18 May '17

lkcl says, he cannot make use of the rk3399 cpu because he does not have the full schematics. What are these schematics? Can you tell in advance what schematics are required? Can you name them? Or do you require all of the full schematics? You do not know what schematics you require until you have read the full schematics?

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Re: [Arm-netbook] Sourcing PCMCIA type 2 and type 3 cases
by ronwirring＠Safe-mail.net 17 May '17

17 May '17

-------- Original Message -------- From: Luke Kenneth Casson Leighton <lkcl(a)lkcl.net> Apparently from: arm-netbook-bounces(a)lists.phcomp.co.uk To: Eco-Conscious Computing <arm-netbook(a)lists.phcomp.co.uk> Subject: Re: [Arm-netbook] Sourcing PCMCIA type 2 and type 3 cases Date: Tue, 16 May 2017 20:55:43 +0100 > --- > crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 > > > On Tue, May 16, 2017 at 8:35 PM, Vincent <ml.eoma68(a)eml.cc> wrote: > > Hi Luke, > > > > Hm, that is sad. I somewhat fear that these cases are being phased out > > and soon will no longer be available :-/ > > no - there are at least two big customers still ordering these > specific parts. one is in korea, the other is the french "Conditional > Access Module" industry. Is the pc card's casing this one https://en.wikipedia.org/wiki/Conditional-access_module > > also i've ordered 2,000 of each (case and connector) so should have plenty. > > > Does he have both type 2 and type 3 cases? > > no. type II only. > > > I saw some type 3 cases with > > screws and everything which lead me to the conclusion that it could > > actually be possible to open/close them and insert/remove the PCB that > > is inside? For type 2, this appears not to be possible? > > the litkconn P/N 68F casework basically is a "total disassmbly" job. > it's a pain in the ass and takes several minutes. > > > If it is about receiving data, I can basically set up pretty much > > everything, e.g.: receive via email, dedicated GIT, anonymous file drop > > off, etc. ;-) > > yay, great. > > _______________________________________________ > arm-netbook mailing list arm-netbook(a)lists.phcomp.co.uk > http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook > Send large attachments to arm-netbook(a)files.phcomp.co.uk

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Re: [Arm-netbook] Totally derailed topic
by doark＠mail.com 17 May '17

17 May '17

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 I apologize for DOS'ing the list, I can only get online about once a week. On Mon, 24 Apr 2017 14:27:00 +0000 Lyberta <lyberta(a)lyberta.net> wrote: > > Christopher Havel: > > @ Lyberta -- I'll just say that I don't think it's any healthier to be > > wanting to kill other people than it is to be wanting to kill > > yourself. Somehow that doesn't fit my definition of 'normal'. But > > that's me -- and I don't want to, you know, tell you how to think. > > Not my job. So I'll drop this for now, except to say that pills can > > do you a world of good if you let them. > > This is a humane execution. They turn you into a vegetable and other > people think you are awake, but you are asleep, you have no coherent > thoughts. I have gained 40 kgs under antipsychotics and now I have > problems standing up and sitting down, I have low blood pressure, my > knees hurt a lot, I can barely walk anymore. I'm just a lump of fat now. > Lump of fat that waits for the world to kill it. @ Lyberta, I've been thinking a lot about what you wrote, what I'm about to write could be totally wrong, but if I'm right it would lead to a cure for you. I'm not a psychiatrist, but I do know what a request for help from anyone, anyone at all, looks like. I suspect that you might be more intelligent than people give you credit for. I suspect that you're caught in the ultimate trap, weather you realize it consciously it or not. You see, when philosophers first removed God from their philosophies they are tasked then with trying to find a purpose to life. As others on this list pointed out becoming a homicidal maniac is pointless, but as the aforementioned philosophers found, the universe will eventually end and all that is, or was, or could be, or could have been will cease to exist. They were thus confounded in the question that never has been answered by atheists. That would be, "When should I die." and more generally, "What is the point of it all." I've seen many people caught in this trap, perhaps without knowing it. They start off as fun people capable of much, as they age they realize what they have not done, and what they are not and probably will never be. They then try things like suicide, or boasting, and thus they loose those qualities which draw others to them if not their life as well. I think you're caught in the same trap, unable to realize your own potential for lack of a moral standard (it also suffers as a result of an Atheistic philosophy), and unable to accept a pointless existence. You see, Killing others would be something (you describe laughing at them and being rid of them), and killing yourself would cause you to no longer think about your problems. So my theory would at least satisfy both of your, ahem, ravings, in as much as it would point to a root cause of both. I said above that "I suspect that you might be more intelligent than people give you credit for," and here is what I mean. If you can reason that far, even subconsciously, then you have gotten farther then most in as much as you realize the lack of adequate solutions. Put another way, you are way up there with the very best Atheistic minds. Now I could easily go on, but I think that I'll leave you with a hopefully clearer understanding of what is bothering you. As Mr. Havel pointed out, I don't intend to tell you how to think, and ultimately, more people are cured everyday of mentally related problems by their own minds then drugs, or what others tell them. Think about it, panic, too much and a person can't function, too little and they are lackadaisical. Or fear, or pain, or love (I'm talking emotional attraction), or well, anything. In any and all cases I think you might enjoy a book that is eyeopening, insightful and uplifting, with respect to the world around you, as opposed to your more dreary, despairing, world view. This would at least give you lots of interesting and worthwhile things to think about IMHO and it would be something that even a vegetable could do :) I'd suggest "The Chronicles of Narnia" by C.S. Lewis and "The phantom Toll Both" by Norton Juster. It is from "The Chronicles of Narnia" that we get the quote "Oh my mistress do not by any means destroy yourself, for if you live you may yet have good fortune, but all the dead are dead alike!" The very best, David -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEL2N7+xWmVOJDQxWGm3XCrhg2YP8FAlkPgs4ACgkQm3XCrhg2 YP9kaxAA58VjxuBdopWgK2Po9nyUfXZmCtv3bq8fL7JoGD8/bQ0aLk9JpvtNm6J4 ZOIjtJzcz8Kdfap3v3ry6CwqXqY7yYnzFkLuCqVLxER7+WXe1F7fOlgupq+GGZAb nwgqoObJJbQR/TD3SKgUHJ3/tPykb2jWN9Kqorgr97DserqRG8hIOgqFN4pKo+8o bDxqKUpGzRIcSX6k3edt6G0I0aJTPwQVW6kegN3BEvOj3PlGByrg2mhWUPZXF4Da A9aQKAUfEJyyqjboeILi1MlIg9CJJjEpImCqvre19Y6b0s203D+epVn3sqCZcYTo MS/uYRk87GKU0zq15WO1lmNtprptXmDGob3YrI8CjocEUpgxqeZ9hwXniDnXHt2C zo6odx40sn283k/8lPA+Tfsc8CdhAs5b4QkNQtkRnZjFxJPaUe4diBhfWPyJHA4+ GhxFeC9Lpgh7ftAMAJfRRDuOqQ7juUHSmbJmulvUwf55sAzA4miP9qdrvR9zDIIz 8goJDinuU1IwTlDCjiGUDE3RMdHeNxwLoI2wtqsOErSJJunkd6zxUq/gy+1wZljd uvMAZpqy5ni6gc8+Ck5D7DFSl4WFfR/LbwTjoTY7Mii+2ipkbU+dQgm0IiFPmJIZ Beink0Hv7kBga1aAz5xe7/IdeG0kH0GXUn+/W2uEV27EuG4sWQ8= =BlCA -----END PGP SIGNATURE-----

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Sourcing PCMCIA type 2 and type 3 cases
by Vincent 16 May '17

16 May '17

Hi everyone, I just did a little digging to find suitable sources for these cases. Since working on the i.MX7-based card, I would really like to tinker with the cases, too. Two samples of each type would be nice. Any idea where to get them? Unfortunately, I could not find a good source. Thanks, Vincent

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EOMA68 card based on NXP i.MX7 (work in progress)
by Vincent 16 May '17

16 May '17

Hi everybody, Since this is my first post on this list, please allow me to get off my chest a few things: - huge thanks to Luke for getting this project started - me = funding a PFY laptop, eagerly awaiting for it to arrive ;-) - me = working at a research institute, focused on hardware security As a private individual but also as at work, having an EOMA68 card based on an NXP i.MX7 would be very useful. It is a powerful processor with a heterogeneous architecture (2x A7, 1x M4) which makes it an interesting choice for energy-limited applications (M4 can turn off/on A7) and scenarios where safety/security are important (M4 can do real-time aside from workload on A7). The i.MX7 has many useful security features (crypto accelerators, high-assurance boot, TrustZone, etc.). An initial check with the EOMA68 infrastructure indicates compatibility. My personal goals with this are as follows: - Create an EOMA68 card with i.MX7 to complement my research (in fact, I simply need a good demo for the stuff I'm doing) - Provide the community an even better microprocessor card - Have a complex PCB project to learn along the way (I did PCB designs beforehand but never that complex) The project outline is roughly as follows: - 1 Use a phyBOARD-Zeta and a set of adapters to check compatibility of the i.MX7 and the EOMA68 infrastructure once the PFY laptop arrives [1] - 2 Create a PCMCIA-II card featuring the i.MX7 (goal: release as board + schematics to the public) - 3 Create a PCMCIA-III card protected with a high-security tamper-resistant enclosure that makes physical access improbable (I will not comment on this prior to publication as it is my research project), check for example [2] What would be of interest to me is the following: - How well the idea of having an i.MX7 card is received - How important the use of an open source CAD program is. I have access to Altium and have used it beforehand. However, KiCad has made significant progress since CERN is involved. Using KiCad would make it easier for the community to modify the board but since soldering these components by hand is impossible anyway, would there be any benefit in having freely accessible design files? - General interest in a tamper-resistant enclosure To make the development easier, it would be nice if Luke could provide us (the community) with: - proper drawings for the outline of his PCB - PCMCIA connector type/enclosure and height requirements of PCB - mechanical verification package (as order option on crowdsupply) to provide a "getting-you-started" package for EOMA68 card developers; possibly including: PCMCIA receptable, connector, enclosure, etc. Please let me know what you think. Also, please keep in mind that this is a kind of fun project for me at work and therefore the time I can spend on this is limited. Progress will be slow but I will be sending updates to the mailing list. Cheers, Vincent [1] http://www.phytec.eu/product/single-board-computer/phyboard-zeta/ [2] http://www.design-shift.com/orwl/

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IRC chat channel for EOMA68
by Dave Haeffner 16 May '17

16 May '17

Hey all, I saw mention of an IRC chat channel on the EOMA68 Crowd Supply site, but no specifics about it. Is it on freenode or somewhere else? What's the chat room name? Cheers, Dave H

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What's your EOMA card doing
by mike.valk＠gmail.com 15 May '17

15 May '17

Let's have a "What's your EOMA card doing" site so the world can see where and how long cards are alive and what use they have. Perhaps have each card have a, printed, unique number. So it's journey can be followed. This obviously has security and privacy issues attached so it would need a lot of thinking through. What does everyone else thinks of this?

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Re: [Arm-netbook] GR8 based EOMA68 card
by Ismo Väänänen 15 May '17

15 May '17

>Wouldn't the PCMCIA card thickness be an issue when using a CPU module? According to the mechanical drawing on page 32 of the v1.0 GR8 datasheet the SoM is at maximum 1.12mm thick. This should fit nicely inside even the 3.5mm typeI EOMA68 case. https://github.com/NextThingCo/CHIP_Pro-Hardware/blob/master/Datasheets/GR8… -Ismo

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arm-netbook May 2017