arm-netbook

arm-netbook@lists.phcomp.co.uk

8 participants
1076 discussions

about Risc-V and Power,
by zap 04 Jan '20

04 Jan '20

Isn't Risc-V supposedly supposed to be more secure and isn't open power based on the old risc? I am just wondering, if the level of evils risc-v has done, justifies abandoning usage of it when you could just as easily do some risc-v processors with or without their help and moreover, power, doesn't it require an immense, even crazy amount of watts? I guess my point is, they use more battery power than intel even. And intel is bad enough. Supposedly though I thought anyone could make risc-v processors as long as they dont use the trademarks. That being said, I noticed you guys have been quiet for a while. I hope you guys are doing well. :) I also hope you can reach your goal, who knows, maybe you can do twice what you thought someday with even 1W used only while being run. If I am misunderstanding something, feel free to let me know, I just think making a line of Risc-V based processor is the way. Libre of course, but yeah... and yes I saw your update.

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Libre RISC-V -- I mean OpenPower M-Class GPU update
by David Niklas 03 Jan '20

03 Jan '20

Not that I haven't complained about RISC-V's seeming, now proven, lack of openness from the beginning, but did you ever find out why they restricted access to people with UC Berkeley associations? It can't be: the license, newbie complains, IP theft concerns, etc., I give up. I would have asked them point blank, myself and put it in the update. It's counter productive to their stated goals. Thanks, David

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Re: [Arm-netbook] [Libre-silicon-devel] [OT only slightly] STEAM Camp OpenSourceEcology 22jan2020 for 9 days
by Luke Kenneth Casson Leighton 31 Dec '19

31 Dec '19

(removing lots of unnecessary ccs, particularly the FOSDEM visitor list) On 12/31/19, Marcin Jakubowski <marcin(a)opensourceecology.org> wrote: > Luke, any thoughts on you stepping up and coordinating the maskless stepper > module of this crazy evolution? as we (privately) discussed yesterday, there are 4 levels of NDAs: HDL tools, VLSI tools, Cell Libraries and Foudries. i'm waaay overloaded by dealing with level 1 heavily and interacting with people at level 2 and 3. david and the libre-silicon team are dealing with level *4* heavily, level 3 in a big way, and interacting with people at levels 2 and 1. they're the best people for this. l.

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Re: [Arm-netbook] [OT only slightly] STEAM Camp OpenSourceEcology 22jan2020 for 9 days
by Luke Kenneth Casson Leighton 31 Dec '19

31 Dec '19

guuuys i _did_ say don't crosspost. did i say don't crosspost? i did say, "don't crosspost". armnetbooks is ok because it's such a weirdly eclectic and topic-tolerant list. fosdem mailing list for visitors? mmmm... no. l. On Tuesday, December 31, 2019, pavel(a)noa-labs.com <pavel(a)noa-labs.com> wrote: > Are 1um masks that expensive (compared to the rest of setup)? Or is it has > more to do with turnaround times? > > Can you share details of a light source and resist? One important thing > will be to pick light source that will not burn the LCD matrix, and will > not be absorbed by the glass much. Making a custom made LCD with special > materials might not be that cheaper that sticking with masks for the > beginning. > > It will be truly great if one can just replace the mask with LCD with no > extra work > > Sent from my Huawei Mobile > > > -------- Original Message -------- > Subject: Re: [Libre-silicon-devel] [OT only slightly] STEAM Camp > OpenSourceEcology 22jan2020 for 9 days > From: David Lanzendörfer > To: Libre-RISCV General Development ,Linux on small ARM machines , > Libresilicon-developers@list.libresilicon.com,fosdem@lists.fosdem.org, > libresilicon-developers(a)list.libresilicon.com > CC: Alasdair G Kergon ,Marcin Jakubowski > > > Hi > My idea was to use an LCD plus a lens system in order to build a mask less > stepper unit for manufacturing semiconductors. > This way the costs for the mask sets would fall away and you would suddenly > be able to provide something like a pooling service for semiconductors. > > What do you think? > > Something worth combining your brain power over in those said 9 days? > > Cheers > -lev > > On Tuesday, 31 December 2019 4:42:10 PM HKT Luke Kenneth Casson Leighton > wrote: > > apologies for the cross-list post, the topic is very likely to be of > direct > > or indirect interest, please do share elsewhere, however for questions > > please do reach out directly to Marcin from OSE rather than crosspost > > replies! > > > > the OpenSourceEcology Project is running a hands-on real-time > collaboration > > and training course for 9 days that happens to have one of its camps in > > Ghent, Belgium, only around an hour by train away from FOSDEM and running > > up to overlap with FOSDEM only on its last 2 days, Feb 1st and 2nd, 2020. > > > > https://www.opensourceecology.org/steam-camp-january-2020/ > > > > Marcin's Ted Talk is here: > > https://www.ted.com/talks/marcin_jakubowski_open_ > sourced_blueprints_for_civi > > lization?language=en > > > > it is the beginning of a practical real-world bootstrap process for a > > modern civilisation and actually uses and puts into use everything that > we > > love about FOSS and FOSH. > > > > participants will get to actually *make* a 3D Printer, a CNC milling > > machine, then use those to fabricate an Arduino PCB which... you get the > > idea. a battery operated welder will also be one of the hands-on > projects. > > > > Alasdair, an idea just occurred to me: can we discuss privately, they are > > doing "remote" collaboration: is there room / time for OSE to book a > > workshop by remote link, for two reasons: one in case FOSDEM attendees > are > > interested to see what is going on, but secondly, if anyone who attends > > STEAM would like to keep in touch whilst attending FOSDEM? Can we discuss > > off-list(s)? > > > > best, > > > > l. > _______________________________________________ > Libresilicon-developers mailing list > Libresilicon-developers(a)list.libresilicon.com > https://list.libresilicon.com/mailman/listinfo/libresilicon-developers > > -- --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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[OT only slightly] STEAM Camp OpenSourceEcology 22jan2020 for 9 days
by Luke Kenneth Casson Leighton 31 Dec '19

31 Dec '19

apologies for the cross-list post, the topic is very likely to be of direct or indirect interest, please do share elsewhere, however for questions please do reach out directly to Marcin from OSE rather than crosspost replies! the OpenSourceEcology Project is running a hands-on real-time collaboration and training course for 9 days that happens to have one of its camps in Ghent, Belgium, only around an hour by train away from FOSDEM and running up to overlap with FOSDEM only on its last 2 days, Feb 1st and 2nd, 2020. https://www.opensourceecology.org/steam-camp-january-2020/ Marcin's Ted Talk is here: https://www.ted.com/talks/marcin_jakubowski_open_sourced_blueprints_for_civ… it is the beginning of a practical real-world bootstrap process for a modern civilisation and actually uses and puts into use everything that we love about FOSS and FOSH. participants will get to actually *make* a 3D Printer, a CNC milling machine, then use those to fabricate an Arduino PCB which... you get the idea. a battery operated welder will also be one of the hands-on projects. Alasdair, an idea just occurred to me: can we discuss privately, they are doing "remote" collaboration: is there room / time for OSE to book a workshop by remote link, for two reasons: one in case FOSDEM attendees are interested to see what is going on, but secondly, if anyone who attends STEAM would like to keep in touch whilst attending FOSDEM? Can we discuss off-list(s)? best, l. -- --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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Once upon a time you suggested building an opensource router
by David Niklas 29 Dec '19

29 Dec '19

Hi luke, I don't think that you created one because it would have not been capable of 1000Mb ethernet, though most people in the US have 100Mb or less internet. The company friendly elec has decided to do so: https://www.friendlyarm.com/index.php?route=product/product&product_id=274 A brief overview: H3/H5 powered 512MB RAM. Advertised as gigabit capable, but not actually able to do this with just TX: 230Mbps and RX 334Mbps on the second port (the first runs at almost the correct speed). The minimal config without wall brick PSU and PSU cable (USB) goes for $19.99. Thought you would be interested, David

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Dear luke, what do you think of North American PCB fabs?
by David Niklas 13 Dec '19

13 Dec '19

Hi luke, Today I got an email from allaboutcircuits and it was not an article (what I subscribed for), but an advertisement for a "deal" that Advanced Circuits (www.4pcb.com) was running. I don't have a thing to make, but thought of you and wondered if such companies really do give good deals and are nice to work with. They advertise "free" software that's not GPL so I'm unimpressed but other prospective customers would be. The "deal" was 50% off fist and second orders up to $250 and for businesses, up to $500 off PCB orders with a promo-code (Of course, nothing is "free" and they'll have to make it back somehow). You see, at some point in time (I'm guessing 2+ years at least), I'm going to have to not roll my own and instead use a real PCB fab so I'm keeping my eyes open. Thanks, David

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crowdsupply update 27sep2019 power regulators
by Luke Kenneth Casson Leighton 08 Nov '19

08 Nov '19

https://www.crowdsupply.com/eoma68/micro-desktop/updates/faulty-power-regul… -- --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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OT: Most of China's (water) pipe made from PVC with lead mixed in!
by Alexander Ross 03 Nov '19

03 Nov '19

Off Topic https://web.archive.org/web/20130911233635/http://www.plasticsnews.com/arti… oh no, most of lukes water is from pvc pipes that have lead mixed in them :(. oh dear... even in the uk there a fair bit of lead pvc water pipe i think it was saying... urrgh eek... been reading up about Nitrile rubber + Polyvinyl chloride foam on wikipedia, used for cheap car sound damping. one link lead to another, to pvc.... to plastic water pipe lead contamination.... bad enough old pipes made from lead metel now with limescale internal coating unless the wrong water is used it that gets dissolved like in flint, usa... urrgh. would have thought they would not be stupid to repeat the same mistake in plastic pipes! then these the leaking from plastics and gassing... i dont i will be buying cheap nitrile rubber + Polyvinyl chloride foam for car sound damping, ill get the more ££ butyl rubber visco elastic polymer if thats any better health wise....? well audio people prefer it.

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Re: [Arm-netbook] travelling
by Luke Kenneth Casson Leighton 30 Oct '19

30 Oct '19

On Wednesday, October 30, 2019, Jacob Lifshay <programmerjake(a)gmail.com> wrote: > > Correct! Bill Ross is the inventor of exactly that. He uses Potassium > > Hydroxide as a catalyst, and nickel plates with 0.004 in clearance, 2.5v > @ > > 50 A and you get enough hydrogen to add to a family sized car. > > > > I don't think that's nearly enough power (unless your using a whole bunch > of those cells in series and parallel): if a car slows down at the same > rate at which it accelerates, then the braking system has to absorb as much > energy as is produced when it accelerates: for a puny 10hp engine that's > about 7.5kW -- much more than the 125W absorbed by 2.5V 50A. spoke to bill about it: the cylinder is basically a dead short (it's 2 cylinders, one inside the other, around 10in high, 5in diameter). he's had it up to 1000A (once!) but the problem is heat. the system was designed not just for electrolysis it was designed for thermal dissipation without mechanical parts. he's going to do a test at 1000A again, see what the thermal rise is. if it's below what would normally be an emergency braking time then we're fine. although what he actually said was, "time to blow shit up again" :) l. > Patents from 1880 and 1921 show that water flashing to steam when injected > > at TDC will not only cool the cylinder but will actually do "work". > > > > neat! > > My personal favorite is the sterling engine, which in a hybrid car can > overcome it's disadvantage of needing a long time to start due to being > able to operate from the batteries while the engine is warming up. > additionally, it's much quieter due to not discharging the cylinders to the > exhaust. yehyeh. oo the wikipedia page animation is nice. twin cranks offset by 90 degrees, oooo :) l.

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