time for a bit of a rant :)
i've been working on the tablet PCB now for... literally months over the past year or more, and i can't quite believe that every time i look at it i find something - yet another thing - that needs fixing or improving.
the latest was noticing that NMI# from the tablet's AXP209 wasn't connected to one of the EINTs on the EOMA68 connector, and noticing that 18-pin RGB/TTL with the 8.9in LCD (only 3 lane LVDS) is incompatible with 24-pin RGB/TTL of the 7in LCD (4 lane LVDS). so, goodbye all the resistors for selecting different panels, and then i noticed that the power tracks were crossing the LVDS lines so had to completely reorganise those.
i also noticed that the SD/MMC needed moving upwards a bit (so that SDcards could be poked into the case and actually... y'know... lock?), and...
... well, it's just a heck of a lot of detailed work and i'm just... amazed that there's so much to do!
oh - one other hilarious thing: i tracked down a company that makes a TI SN75LVDS83b.... the name is *not* texas instruments, it's novatek :) it's the NT7181 and it's literally identical. even the ability to switch TTL levels so that it's 1.8, 2.5 and 3.3v TTL compatible depending on input voltage.
anyway it's kiinda fun...
l.
I've been following the progress of your projects with interest for awhile.
Is there a tracker you're using for all these issues that you can link to here?
On Sun, Dec 7, 2014 at 7:34 PM, miloh froggytoad@gmail.com wrote:
I've been following the progress of your projects with interest for awhile.
cool
Is there a tracker you're using for all these issues that you can link to here?
no, because i am fixing things as i find them, directly. also there's no direct day-to-day involvement from others in the development (i've invited people over the past four years and the invitation to collaborate on a day-to-day basis - and financially benefit from their contribution - on these projects is still yet to be taken up [1]). a tracker _would_ help in the circumstances where there were other people directly involved.
l.
[1] thank you to everyone who has helped in other ways, esp. with reviews, ideas and contributions.
arm-netbook@lists.phcomp.co.uk
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Luke Kenneth Casson Leighton -
miloh