arm-netbook

arm-netbook@lists.phcomp.co.uk

8 participants
1077 discussions

article about.... netbooks
by Luke Kenneth Casson Leighton 14 Mar '17

14 Mar '17

and they're even running arm processors. this *being* a mailing list *named* "arm-netbooks" (duh) it's my responsibility and duty to make people aware of e.g. this :) https://mobile.slashdot.org/story/17/03/12/2140230/can-crowdfunding-bring-b… l.

1 0

laptop 15in PCB4 "stand-alone power board"
by Luke Kenneth Casson Leighton 13 Mar '17

13 Mar '17

hi, in order to work towards getting the laptop out in phases i'm looking to create an intermediary design that utilises the exact same PCB1 from the laptop, exact same LCD, without the STM32F board (PCB2) and without the battery charger board (PCB3)... which in effect makes an "LCD monitor" when utilised with a passthrough Card or an "all-in-one PC" when utilised with a card that has a processor in it. a review of the (simple) schematics for PCB4 would be really useful, although they are in fact very very simple. please note though that i will be delaying prototyping PCB4 and PCB1 until the latest micro-desktop revision (1.7) has been prototyped and confirmed working with its SD/MMC level-shifting. i missed that bit... so do not wish to waste backer funds by potentially making a mistake on the micro-desktop 1.7 PCB that's *duplicated* on laptop PCB1. http://hands.com/~lkcl/eoma/laptop_15in/pcb4 --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

2 2

eoma68 rk3288 testing
by Luke Kenneth Casson Leighton 12 Mar '17

12 Mar '17

http://rhombus-tech.net/rock_chips/rk3288/news/ i now have 2 assembled PCBs with the exact same "fault" - which after talking to paulk and akaka on #linux-rockchip i *may* have a lead on how to get the DDR3 RAM up and running properly. we believe it's down to the impedance control register (ZQCR) which is being hard-coded in u-boot-rockchip rather than being allowed to "train". those values are suited for 6-layer 1.6mm PCBs - the impedance of tracks when you have an 8-layer 1.2mm PCB are *half* what they are for 6-layer 1.6mm PCBs. l. --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

2 8

Libre CNC milling toolchain
by Lars Kruse 11 Mar '17

11 Mar '17

Hi Luke, I just read your last update [1], even though it is already three weeks old. It was a good and interesting read - thank you for that! There you mentioned the bad shape of Free Software in the fields of CNC milling. In general I have to agree. But I think, it is not as bleak as you experienced it. There is indeed a usable toolchain of Free Software for 2D or 3D design, toolpath generation and machine control. Sadly especially the toolpath generation process is far from being as fast and full of features as it should be. Personally I maintain PyCAM [2] (a toolpath generator). The toolpath generators are the weak link between a range of good libre 3D and 2D design software and linuxcnc [3] - an excellent and mature software for machine control. Feel free to contact me, if this topic is of any practical interest for you right now. Cheers, Lars [1] https://www.crowdsupply.com/eoma68/micro-desktop/updates/progress-physics-t… [2] http://pycam.sf.net/ [3] http://linuxcnc.org/

3 3

When does the A20 board ship?
by Nick Hardiman 10 Mar '17

10 Mar '17

When does the A20 board ship? I got a little lost following the many hardware and software updates and debates, in various mail threads. Thanks, Nick

2 5

Logging and journaling
by Julie Marchant 09 Mar '17

09 Mar '17

I just want to make sure of something: are the EOMA68-A20 computer cards going to be shipped with logging and journaling disabled (so that the storage isn't constantly being written to)? I'm asking because this is pretty much a necessity for an OS running on NAND or an SD card if you don't want to have to constantly buy new SD cards because the previous one reached its write limit. Ditto for swap, but given the small amount of NAND on the A20 card, I'm sure not having swap is a given anyway. ;) -- Julie Marchant https://onpon4.github.io Protect your emails with GnuPG: https://emailselfdefense.fsf.org

28 121

Re: [Arm-netbook] Logging and journaling
by dumblob 08 Mar '17

08 Mar '17

Hi Hendrik, My experience when I end up swapping to a hard drive is that the whole > system becomes so slow and unresponsive that it mosstsly ignores console > input, and I have no ability to kill things before the OOM does. Often > the best way to get things moving again is a hard reset. And then > watching it repair the filesystems. > well, in Linux 4.10 there is kind of a solution - writeback throttling allowing "skipping parts of the queue" as described in https://lwn.net/Articles/682582/ . Cheers, Jan

1 0

Olimex is making an "open-source" laptop...
by Christopher Havel 07 Mar '17

07 Mar '17

http://hackaday.com/2017/02/05/olimex-announces-their-open-source-laptop/ Rip 'em up, Luke... you know you want to... the quotes wouldn't be in the subject header otherwise... :P

8 24

Laptop PCB schematics
by Internet 03 Mar '17

03 Mar '17

I recently walked through the files on hands.com and found the schematics for the 3 PCBs of the laptop. However, there are multiple versions (PDFs) and I would like to know whether those are the latest. If help is appreciated, I would like to take a look at the schematics. I really want this project to be successful and offering help is probably the best thing I can do ;) Julius Lehmann

11 63

Re: [Arm-netbook] Arm processors
by rohbeck＠yahoo.com 02 Mar '17

02 Mar '17

No, the rumor mill has it that Zen will scale down to 4W/core ------ Original message------From: Luke Kenneth Casson LeightonDate: Thu, Mar 2, 2017 01:21To: rohbeck(a)yahoo.com;Cc: Linux on small ARM machines;Subject:Re: [Arm-netbook] Arm processors ---crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68On Thu, Mar 2, 2017 at 9:14 AM, rohbeck(a)yahoo.com wrote:> Haha, just my thought. My first impulse was "Zen @4W, yay!".0 0https://en.wikipedia.org/wiki/Zen_(microarchitecture) surely you don't mean the zen processors from AMD which have a TDP of65 or 95 watts and have over a thousand pins and a heatsink almostfour times the size of the PCMCIA Cards themselves.... is there any other processor which fits the description of "zen"which is less ambiguous from a google search? do you have a directlink to what you're referring to? thanks rob.

2 1

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

arm-netbook