[Arm-netbook] Block Diagram - ZEOMA - Handheld Games Console

Luke Kenneth Casson Leighton lkcl at lkcl.net
Sun Oct 16 08:15:53 BST 2016


take a look at the various schematics available for tablet reference
designs etc. etc. you want  something like a SY7208 see
http://hands.com/~lkcl/eoma/TABLET162_20121110.pdf page 7 and make
sure it's providing enough current.

please for goodness sake read the next update when it comes out,
please for god's sake don't go searching on digikey, pick the first
random convenient IC and expect to be able to have what you design
made up in even a small volume at anything approaching a reasonable
cost.  it's very very easy to design ultra-expensive products.

take a look at frida's LCDs, we have the advantage of being in touch
directly with marco, the possibility of group buys, etc. etc.
datasheets all here:
http://rhombus-tech.net/suppliers/shenzen/frida_lcd/




l.


On 10/16/16, Joseph Honold <mozzwald at gmail.com> wrote:
> On 10/15/2016 06:21 PM, GaCuest wrote:
>> Hello everyone!
>>
>> If anyone if interested, I’ve updated the block diagram with new
>> changes:
>> http://george.the-petries.co.uk/shared-write-access/eoma/Block%20Diagram%20ZEOMA/Block%20Diagram%20Console%202.1.png
>>
>> Any suggestions/corrections are appreciated. Thanks!
>
> Do you have a chip picked out to provide 5V boost to the EOMA card
> yet? The AXP209 does not appear to provide it.
>
> My plan for handheld computer was to use a TI brand LiPo charging IC
> and 5V boost. The AXP209 seems like a better idea than the TI charging
> solution since it has configurable regulator outputs and lower cost.
>
> Also, I see you are not using SSD2828 for RGB to MIPI conversion
> anymore. This week I finished up a preliminary schematic for a SSD2828
> testing/breakout board. I briefly started the layout and began to have
> second thoughts. It seems like too much work to incorporate it. I'm
> now looking for ~4 inch RGB LCD's instead.
>
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