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Fwd: [eoma68 update] report back from factory on HDMI
by Luke Kenneth Casson Leighton 04 Jul '19

04 Jul '19

---------- Forwarded message --------- From: Luke Kenneth Casson Leighton <lkcl(a)lkcl.net> Date: Wed, Jul 3, 2019 at 8:16 AM Subject: [eoma68 update] report back from factory on HDMI Mike's staff began the PCB assembly of the run of 100, and had to stop at 36. 20 were ok: 16 of them, the HDMI connector refused to fit. The reason: the CNC machining on the edge of the PCB has not been done accurately enough: it's simply too ragged. The staff did some experimentation, cleaning up some of the edges in the cut-out with an xacto-knife: this did the trick, even though it is shaving something like 0.01mm off the ragged edge of the PCB. The left and right edges do not matter too much, however where the HDMI connector comes in close, it definitely does. Mike is going to talk to the PCB factory to see if there is anything that they can do in future, however with 1,000 PCBs already manufactured, the safest thing to do is probably to *hand-trim* that PCB edge, removing the burrs, on all 1,000 PCBs. Again, to reiterate, because I am still seeing evidence of "complaints" out there, from people who believe this should be easy: these are absolutely ridiculously tiny components and tolerances, and the budget on which it's being done is equally as frugal. 0.05mm on the edge of a PCB. 0.2 mm wide pins, with 0.2mm clearance between them. A "normal" Single-Board Computer product from any other well-funded Corporation would use large (Type A) HDMI, top-mounted, with plenty of tolerances and no need for the PCB edge to be accurately milled. Again, to reiterate: we do not know what will need to be solved next. Therefore, a production date simply cannot be provided, and that really is the end of the matter. Or, the answer is: the production date is "the production time plus the unknown time to solve unknown and unknowable future issues". Mike is sending me the 20 "good" PCBs so that I can test them here, to see if they are okay. The staff will continue with the rest by shaving the burrs on the PCB on every single one of the remaining 80 with an xacto-knife, before putting them through the production line. It is looking like I will need to do the testing of all 100 of this preliminary production run, here, at my home, in Taiwan.

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india shakti core to be available as a SBC
by Luke Kenneth Casson Leighton 03 Jul '19

03 Jul '19

https://hardware.slashdot.org/story/19/07/03/016227/indias-first-cpus-are-r… this is amazing, i'm so delighted for them.

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eoma68 a20 card production
by Luke Kenneth Casson Leighton 30 Jun '19

30 Jun '19

(joshua appreciate you're busy with teardown, let's make this one short) Mike got back to me, his engineer completed the review of the BOM, and we managed to work out all of the information that had been lost by Mike's long standing manager quitting with no notice. The BOM still had components in it from the RTC, Ethernet and ONFI NAND, and we had had to change 10uF 0805 to a pair of 0603 4.7uF - all 12 or so of them - when there was that shortage caused by Apple, last year. All of this was *supposed* to be documented as part of the pre-production runs that cost USD 2500 a shot, so that the longer runs are far less risky because a short trial run is supposed to prepare the engineers for the longer one. We cannot keep doing that, it takes 2 to three months each time, so we have to take the risk and go straight to QTY 100. This is just how it is. Patience is required. Success happens by solving each unknown and unknowable issue that comes up. However, it would be appreciated if people would accept that this is not something that cannot be predicted, neither what might happen next nor how long it will take. Continuously asking "when is shipping going to happen" the answer is, always and will always be: until we have actual finished product ready to put into the hands of the shipping agents, we don't know and we can't know. It really is as simple as that. L. -- --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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Intel's at it again
by David Niklas 11 Jun '19

11 Jun '19

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Sorry to be the bearer of bad news, but Intel's at it again: https://www.anandtech.com/show/14467/intel-launches-the-nuc-compute-element… Yes, I already commented. Oddly, for the first time in my life on AT, I had to actually re-write my comment because the system thought it was spam. So luke, I'm your personal spam bot. ;) David -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEL2N7+xWmVOJDQxWGm3XCrhg2YP8FAlz1Oi4ACgkQm3XCrhg2 YP97fQ//deXcKeUqYSZqwPTElIv7Fys9d+aEgoNycE/eakef4fVW1BKOUMCOM7JR CDW1zoZUtg3JM122yEo/osi+d044xrNuLkPuVd0cvuLJez1PSn+VHLGJGeS3ET29 z93A0jD6GWoFKyaDOzNjqKdBo7J0ryuJn1IN58QuKpsYPh3uvBd3CTt6lbqkhp49 DlDQ0baU3dfTWm6lS/YQKIkoSq10hH29uQxrvwz0JpdILfoFssiyugGMtN6eg9fW zt2VrotoOnnu03r9mATphZYxJyayOL7Gh5bmQ8cLGLEkshvoU+bxQ+Uy0Qtuhnkx 8BRgdV6BDt9fwI4yD+Eawl6yoqLxl6fFlxMxo5sBEe0haqK5+90MvXWYESE+4WXh 0+qAsAfEIG2zoH9uQJFu2QXGIAjVeK/chRgCTqnpFxr8h3dJ/MqjU7Hy9dyFa9tw Iq998tMTWJ6QovxJtDMZNhr/Kba8yFncqRCSVPoBbq/jHsXhhcwOZD7TxPZbfFel op8VEQmeZWjbhI67uGM2W4CSzsCprhohKvcIqwH9ntdItebtVnFWcDiehlIpdOlO 77Bi9v7apuI3+uRAzuTrLHtkpMCJuzOOg6Sh9RyTxP23z2wBSduB5v+qkwZduINd 3PL1hcLB5nc4lF7Ug/tK6s/++jBb3QiyHVmiL1OtuNMllt7J/A0= =TAak -----END PGP SIGNATURE-----

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please do help upvote libre riscv soc slashdot story
by Luke Kenneth Casson Leighton 28 May '19

28 May '19

https://slashdot.org/submission/9750302/nlnet-funds-development-of-a-libre-… Please do upvote that story Update here https://www.crowdsupply.com/libre-risc-v/m-class/updates/first-nlnet-grant-… -- --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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OT: Trademark abuse of FLOSS project.
by David Niklas 25 May '19

25 May '19

They say it only happens to closed source SW (5min read): https://retropie.org.uk/2018/07/retropie-usa-trademark-resolved/ David

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EOMA68 Computing Devices Update: 2.7.5 Cards Under Way, NLnet, and Intel Compute Card
by Paul Boddie 06 May '19

06 May '19

Hello, Thanks once again for another update on the progress being made with the different boards: https://www.crowdsupply.com/eoma68/micro-desktop/updates/2-7-5-cards-under-… It must be frustrating to encounter production issues (with the Micro Desktop), but I imagine that such things are only avoidable with enough experience of the relevant processes. I suppose that the only way to deal with them is to take the lesson along for next time, pretty much as is noted in the update. Meanwhile, it sounds like the computer cards are waiting for components before being assembled, so we should remain hopeful that their production is more straightforward. It will be interesting to read the next update, certainly. Paul

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Fwd: [Project question: EOMA68 Computing Devices] STM32MP15xx processors?
by lkcl 22 Apr '19

22 Apr '19

Hi, I'm wondering if the STM32MP15xx processors have been considered for EOMA68 (or perhaps the future EOMA50 CF version)? https://www.st.com/en/microcontrollers-microprocessors/stm32-arm-cortex-mpu… https://www.st.com/content/st_com/en/search.html#q=stm32mp15-t=products-pag… Features: cortex A7 single or dual core @ upto 650mhz + cortex M4 core @ upto 209mhz max 1 GByte ram @ 533mhz 1366 x 768 max resolution @ 60fps upto 24bit/RGB888 for LCD-TFT optional Vivante 3D GPU @ upto 533mhz optional secureboot & crypto optional MIPI DSI interface 10/100/GbE no VPU multiple SDMMC/SDIO multiple USB 2.0 host USB OTG more.. Power consumption appears to be similar to or better than the jz4775 - so may be a good low power option. $9.80usd ea suggested retail from ST (10k price) for STM32MP157C TFBGA361 (version with all features incl) OpenEmbedded/Yocto build system used for OS images, with git repositories of sources available for 4.19-kernel/u-boot/TF-A/OP-TEE at ST's github here: https://github.com/STMicroelectronics Boot ROM functionality is detailed here: https://wiki.st.com/stm32mpu/wiki/STM32MP15_ROM_code_overview .. along with lots of other info on this wiki. Some evaluation boards/kits are also for sale soon it seems.. (with various combos of 512Mbyte - 1Gbyte RAM, GbE, HDMI out, LiIon Batt connection, various LCD touch screens, etc.) https://www.st.com/content/st_com/en/products/evaluation-tools/product-eval… https://www.st.com/content/st_com/en/products/evaluation-tools/product-eval… https://www.st.com/content/st_com/en/products/evaluation-tools/product-eval… https://www.st.com/content/st_com/en/products/evaluation-tools/product-eval… .. Mouser and element14 have listings for some of them. Apologies if I've got any details wrong above, or if you're already well aware of all of this information. Thanks for your time, and for EOMA68 ! Craig.

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Re: [Arm-netbook] EOMA68 Computing Devices Update: 500 Micro Desktop PCB Assemblies
by Paul Boddie 27 Mar '19

27 Mar '19

Hello again, It was nice to see this latest update on the project: "Just a brief update: Mike’s factory has assembled the 500 Micro Desktop PCBs, though the through-hole VGA connectors still need to be hand-soldered on. These are the simpler of the two boards, so all of the Micro Desktops are being done, whereas explained in a previous update, the more complex board, the EOMA68-A20, will only be done in a smaller test run of 100 at first." https://www.crowdsupply.com/eoma68/micro-desktop/updates/500-micro-desktop-… It must be satisfying to see all of this start to come together. On the topic of casings for the computer cards, I get the sense that there are no ready-made solutions for the outward-facing side of the cards, this despite most traditional PCMCIA/CardBus-profile cards exposing ports of different kinds (such as modems, network ports, like two cards I have from many years ago) and thus having similar requirements. I suppose 3D printing or some other creative casing solution isn't an option. Injection moulding seems to be quite demanding, as the following from the Tomu campaign indicates: "Right now a shop in China is etching the Tomu case shape into one ton of steel. Once that’s done they’ll manufacture a few units to verify the etching works. After this “T0” shot, they will harden the steel tool and start production." https://www.crowdsupply.com/sutajio-kosagi/tomu/updates/design-done-product… To provide context, the Tomu case is a tiny piece of plastic of around one square centimetre and probably no more than 3mm in depth! Paul

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Laptop LCD Touch Pad: Display KB Layout Idea
by Alexander Ross 25 Mar '19

25 Mar '19

On the laptops lcd touch pad. Here’s a idea for a feature. When leaning new keyboard layout. Say dovrak for example. The trouble is learning where the new keys are. For me at least, one could do with a constant reminder. What if the lcd touch pad displayed the current pressed keys? Maybe on a image of the keyboard, meaning some way of representing where the key you pressed is relative to other keys. So if its the wrong one you can see where the right one is. This info is only displayed while the keyboard is in use. When the touch pad is in use it switches to a relevant display for touch pad use. As for when the user is using not the touch pad nor the keyboard? What then? display keymap? If playing video display: video controls, time left, is internet speed fast enough for this stream? etc.

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