Let's continue with our details about what's happening. This time with...
1. The LCD Cable and Display PCB --------------------------------
Askarus and me have taken the time to design the layout (physical, not electrical) of the LCD Cable, using paper and thin foil cuts to measure that everything fits and can be assembled.
The flex cable will be a lot more simple than for the Pandora: * No edges which rub against each other and could cut traces * Only half of the traces needed, so traces on one side of the cable are enough, no double-side (like on the Pandora) needed. * The cable will be twice as wide in the area where it rolls and we're keeping distance from the edge to prevent any damages there. * The cable will only connect two PCBs, it won't have it's own PCB included at the top.
We've not yet decided whether we make the lines redundant, so if one breaks, there's still a second one, but we'll see how well that all fits.
Nikolaus and me are also currently discussing about how the display PCB will be layouted so that it is easy to assemble, needs as little space as possible in the lid and works without any issues. There are multiple solutions possible, and we need to find out the best one, so we'll do some mechanical tests as well.
2. The LCD ----------
I received some BOE LCD samples which have the touchscreen applied. Unfortunately, they're not properly assembled (there are air bubbles between the touchscreen and LCD), but we'll get them replaced for free. We can already use them for mechanical tests though.
I'm currently in favour of using the BOE display, as we got it to work already and it had a fantastic picture. I'm also getting a demo board of the Success display though, so I can test and see if it's worth finishing our driver for it or not. And Sharp is interested in getting their display into the Pyra - they even tried to code an OMAP5 display driver for us, so we'll test their LCD as well. It's 5,2" instead of 5", so we need to check whether we can fit the LCD into the lid without changing the size, but I think it might JUST work.
We haven't continued to work on the Rotator chip driver (not enough manpower), as we know it's software and we know it works with the BOE displays in other setups, so that has a bit lower priority.
That's it for today - more stuff will be posted tomorrow :)
That's it for today.
More stuff will follow tomorrow :)
Discuss about that post on the webboards: http://boards.openpandora.org/topic/17066-its-the-details-that-take-longest-...