arm-netbook

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1079 discussions

Paypal sabotage crowdfunding
by Philip Hands 06 Dec '15

06 Dec '15

Hi Folks, Since this list has people that are reasonably likely to come up with crowdfunding projects, I thought I'd point at this sorry state of affairs, caused by Paypal: http://neo900.org/news/paypal-trouble-delays-project (the link to http://garethhayes.net/paypal-warning/ is hardly encouraging either) Cheers, Phil. -- |)| Philip Hands [+44 (0)20 8530 9560] HANDS.COM Ltd. |-| http://www.hands.com/ http://ftp.uk.debian.org/ |(| Hugo-Klemm-Strasse 34, 21075 Hamburg, GERMANY

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Free Soft & Hardware: ControLeo2 Reflow Oven
by Alexander Stephen Thomas Ross 04 Dec '15

04 Dec '15

came across this thought it might be on interest maybe. http://www.whizoo.com/

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15in laptop LCD up on PCB1
by Luke Kenneth Casson Leighton 04 Dec '15

04 Dec '15

http://rhombus-tech.net/community_ideas/laptop_15in/news/ it's by no means perfect, but i have at least data on-screen. i suspect EM interference is causing the corruption, so another revision of PCB1 will need the LVDS IC layout to be reworked. this is however huge progress. the only 2 parts of PCB1 that need to be checked and debugged are the MicroSD card slot and the 1W speaker/headphone amplifier circuits. the CM108AH USB Audio IC has already been confirmed as operational on the USB … [View More]

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LTC4155 design flaw
by Luke Kenneth Casson Leighton 02 Dec '15

02 Dec '15

i've got an enquiry out with Linear, however it looks like there's a serious design flaw with the LTC4155 - not one that's safety-related but one that makes it functionally completely useless. the clue is in looking at page 15 of the datasheet - a diagram which shows the internal operation. in the bottom left corner is a power-selection arrangement, where there are two AND gates. note that they're not symmetrically arranged. the difference between the two is that WALLSNS output is connected … [View More]

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qualcom snapdragon 410
by Luke Kenneth Casson Leighton 28 Nov '15

28 Nov '15

> [*] https://developer.qualcomm.com/hardware/dragonboard-410c > > ("Free graphics possible" according to the Debian Wiki's ARM 64 port page... > > https://wiki.debian.org/Arm64Port Adreno GPU. niiiice. minimalist hardware datasheet (with pinouts but not mechanical layout) on arrow electronics, as well as a five THOUSAND page datasheet on the hardware registers. this might actually qualify as an FSF-Endorseable processor, and, with a bit of work, might actually be a great … [View More]

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laptop power board
by Luke Kenneth Casson Leighton 28 Nov '15

28 Nov '15

.... i have the LTC 4155 15W power IC as well as the STC3115 battery monitor ICs recognised on the I2C bus with 5V power applied, yippeee. embarrassingly, i had the 5V DC socket wired reverse-polarity. this is, uhh, an officially-sanctioned test of the reverse-voltage protection on the power board design. no, really :) on a 2nd (minimally-populated) board i have the 5V regulated output up, but not on the fully-populated board. what i'll do is fill in all the components from the minimally-… [View More]

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The $5 Raspberry Pi Zero is out
by joem 27 Nov '15

27 Nov '15

The $5 Raspberry Pi is out https://www.raspberrypi.org/blog/raspberry-pi-zero/ All sold out everywhere in hours :(

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laptop main board, power board and ingenic jz4775 cpu card
by Luke Kenneth Casson Leighton 26 Nov '15

26 Nov '15

ok, been quite busy, 3 to 4 different things going on. first one: i've been working on getting the eoma68-a20 board up and running (booting) out of NAND flash, that's been quite hair-raising. using a sunxi 3.15-10-rc5 kernel i was able to use the standard mtd-tools package to erase and write to the hynix TSOP48 NAND chip, placing an SPL-enabled recent version of u-boot onto it. this all worked fine... except it turns out that MLC NAND can self-destruct just by reading! all i can say is, no … [View More]

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laptop power PCB working!
by Luke Kenneth Casson Leighton 26 Nov '15

26 Nov '15

yaaaaa, i have battery-operation, i am currently running an eoma68-a20 off of a 10Ah e-bike battery, and both the LTC4155 charger/dual-supply IC and the ST3115 battery guage IC are up and recogniseable on the I2C bus. i have yet to compile up the linux kernel modules for both these devices, but they are both available... somewhere :) only slight issue to track down: power drops to 4V when the 5V DC is plugged in, i still have to investigate that, but it may be related to the setting of 3A … [View More]

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Cool Recycled Laptop Bag for EOMA-68 Laptop?
by Alexander Stephen Thomas Ross 23 Nov '15

23 Nov '15

http://www.protecttheplanet.co.uk/terracycle/denim-messenger-bag.html i look the look of it. made from scrap denim. I’d say looks the part for a laptop bag to sell/go with a eoma-* laptop. I wonder how the sew the scraps together? machine or cheap/slave labour?

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