rowledge wrote:mancio wrote:I think you got it. A chumby with bigger screen (Mx21 does support svga but with very sloppy performance), batteries , bigger box etc... is not a Chumby anymore!
Well that's not very much in the spirit of hacking the hardware, now is it? :-) Putting some 'Hello Kitty' stickers on is ok but a bigger LCD is not? Surely you're not serious...
I have a design, based on an MX21, that use a WVGA 7" display. If you can connect this display to the MX21 (and it's simpler than the one used on the chumby but involves soldering 40 wires to a 05.mm pitch connector) don't expect much more that a rather static UI, colorful as you want, but do forget movies and the like. The SDRAM is shared and moving lots of data between the framebuffer and the display, even through DMA, is really going to hog down the system. You can make a simple calculation by reading the MX21 manual, LCDC chapter but you won't like the result!
I had to slow down to the limit of flicker the refresh rate.
If you are going, for example, to use a VGA SHARP display the modification that you have to do to the kernel driver are very few (starting from the freescale ADS BSP).
So, to sum up, from an hacker perspective is correct to add whatever you want to the cumby (but I stress the fact that a clever hack make reasonable good use of the device's form factor) but from a commercial/industrial point of view, i would switch to other devices to obtain what you want!
Anyway, Hello kitty smiling at you in 800*480 is not bad AT ALL!