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Started pushing 3d models to git  https://github.com/openlunchbox/openlaptop

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#92
Chipsets / Mediatek MT6260
January 29, 2015, 04:56:13 AM
~$3 Mediatek MT6260 GSM/GPRS/EDGE-RX ARM SOC

http://www.datasheet4u.com/datasheet/M/T/6/MT6260_MEDIATEK.pdf.html


32b ARM7EJ-S RISC processor
GSM/GPRS/EDGE-Rx radio
LCD controller
Supports QPI and SPI serial flash
Bluetooth
5-row x 5-column keypad controller
2 UARTs with hardware flow control and supports baud rate up to 921,600 bps
FS/LS USB 1.1 device controller
Multimedia card, secure digital Memory Card, host controller with flexible I/O voltage power
Supports SDIO interface for SDIO peripherals
DAI/PCM and I2S interface for audio
I2C master interface for peripheral management
SPI master interface for peripheral management
Li-ion battery charger and 14 LDOs for the power supply
#93
US DOT Hazmat Safety Rule to Place Limits on Lithium Batteries Carried by Passengers Aboard Aircraft Effective January 1, 2008

http://phmsa.dot.gov/portal/site/PHMSA/menuitem.6f23687cf7b00b0f22e4c6962d9c8789/?vgnextoid=24e4ffc638ef6110VgnVCM1000001ecb7898RCRD&vgnextchannel=8fd9f08df5f3f010VgnVCM1000008355a8c0RCRD&vgnextfmt=print

"Most lithium-ion cell phone and standard notebook computer batteries are below 8 grams (~100 watt hours) of equivalent lithium content.  Batteries not installed in electronic devices are not permitted in checked baggage.

The rule limits passengers to not more than two large spare rechargeable lithium-ion batteries in carry-on baggage.  This applies to batteries that exceed 8 grams (~100 watt hours) of equivalent lithium content and less than 25 grams (~300 watt hours) [see attached illustration].  Batteries with more than 25 grams (~300 watt hours) are not allowed in either checked or carry-on baggage."
#95
Displays / eDP and LVDS
January 27, 2015, 09:53:44 PM
Are there any LCD's that we might consider using that still use LVDS?
#96
How many Watt Hours should the minimum battery capacity be?
#97
Overall Design / Why Modular?
January 27, 2015, 06:12:29 PM
Modular was decided to be able to cover as many different options that people ask for. Some want high performance, long battery life, rugged keyboard and a 12" width. Others want the same with a 15" or 17"display, and others only want a multicore ARM SOC and a durable case with rugged keyboard.

Having the mainboard, batteries, display and keyboards as modules allows the end user to  mix and match the features they want now. This also allows them to upgrade or replace these features in the future.
#98
Firmware BIOS/EFI / coreboot
January 27, 2015, 06:03:01 PM
coreboot is the firmware of choice.

http://www.coreboot.org/
#100
CPU Mainboard Modules / Why AMD APU vs Intel?
January 27, 2015, 05:50:32 PM
AMD has been a supporter of coreboot for the past several years. AMD has also made made BIOS register docs available and many comments are allowed in the coreboot source.

The problem with Intel is that even though Google has provided coreboot source for a few Intel chipsets the source contains no comments for what those magic settings are for and what the other settings in those registers will do. Intel also makes it very difficult for anyone but a chosen few to obtain BIOS register docs.  If this situation were to change then I'd see less problems with designing Intel mainboards for this project.

We could make an exact copy of the Google laptop boards and use the coreboot source but then why not just buy a Chromebook?
#101
T60 Keyboards

Chicony FRU 39T7178
ALPS FRU 39T7118
NMB FRU 39T0958

Have any other part numbers or models that you'd like to see made available?
#102
Displays / Which displays to support?
January 27, 2015, 05:19:25 PM
The LG 2560×1700 13″ 3:2 WQXGA LCD has been the most asked for display.

http://openlunchbox.com/wp-content/uploads/2014/12/LG-12.9-LP129QE1-SPA1-LVDS-2560-1600-400-NITS.pdf 

What are the other displays that you would like to see supported?
#103
Batteries / Battery Power vs Weight
January 27, 2015, 05:16:54 PM
How many batteries should the enclosure hold?

Should we just take up all the unused space with room for battery modules?

How many external batteries should we support?