Yes,
this all can be considered for a future version.
What we wanted to start with is something that just works, is easily
available, can be used for experimenting and software development and
is not too costly. A nice case, a new PCB for the OMAP processor or
using the Gumstix makes things much more expensive.
@Yocto: what has to be considered is that the Gumstix does not fit
into a Freerunner case (it is still too large/thick).
@ Martijn: the OMAP BGA poses high level requirements for a new PCB.
So I would be surprised if one can really get such PCBs for 15 € @ 50
units. But do you have more information? What have been your
assumptions about # of layers, min. drill size, min. width etc.?
Nikolaus
Am 21.05.2010 um 15:48 schrieb Yocto:
> I haven't seen a discussion about redesign of the board, the
design files (schematics in Orcad) are available, so you can
downsize the connectors used and fit it in an existing casing.
Could we, also, consider the option of using a "smaller" board like
the Gumstix Overo ?
OMAP3503 with ARM Cortex-A8 at 600MHz
256MB RAM / 256MB Flash
[ 17mm x 58mm x 4.2mm ].
http://www.gumstix.com
Regards,
// Yocto
----- Original Message -----
From: Martijn van Dongen
To: List for Openmoko community discussion
Sent: Thursday, May 20, 2010 5:00 PM
Subject: Re: Openmoko Beagle Hybrid
Hi,
First of all: nice project, could be a nice follow up for the
freerunner.
I have been looking at the discussions a little bit. Main discussion
is how to make a new casing that fits around the beagle board, how
to produce and what it costs.
I haven't seen a discussion about redesign of the board, the design
files (schematics in Orcad) are available, so you can downsize the
connectors used and fit it in an existing casing. I have a price of
a PCB (without parts) at low volumes (50 pieces) at less than €15.
Assembly of low quantitiy boards will be very expensive (make it
double the components price), so a DIY project for assembly of the
boards will make the PCB fit for a reasonable price.
Regards,
Martijn
2010/5/11 Dr. H. Nikolaus Schaller <h...@computer.org>
There is now a new Wiki page for the project:
http://wiki.openmoko.org/wiki/Openmoko_Beagle_Hybrid
I have received some questions why we did not put all this into a nice
design. The main reason is that we can't redesign the Beagleboard (it
has fixed dimensions) and we can't afford to build plastic injection
moulds (if someone has an idea how to reduce cost this is very
welcome). So the easiest solution was to combine what we have: a given
Beagleboard and the Freerunner case.
Other questions were what one could do with this. Here some ideas (not
assuming it is complete - you may have more and it is a platform for
your creativity):
• experimenting with touchscreen and new user interfaces on
Beagleboard
• learn how the OMAP3530 CPU works
• make it a truly open mobile application development
platform by
adding a battery pack and a UMTS usb stick
• investigate how an Openmoko with UMTS and OMAP3530 feels
(not from
haptics but screen operation and UMTS speed)
• porting SHR, QtMoko, Android, etc. to ARM-Cortex A8
And here some feature list:
• PCB that fits into Freerunner case (top cover and middle
part after
cutting a hole)
• works also without such a case (except speakers and earset)
• Toppoly LCM interface (same display as used in the
Freerunner -
otherwise it would not fit into the case)
• TSC2007 touch screen controller
• Microphone
• Earset and Speaker connector (for those sitting in the
Freerunner
case)
• 2 buttons (AUX and Power)
• 2 dual color LEDs (in the AUX and Power buttons)
• vibracall driver
• headset jack to connect microphone, earset and speaker
For the software, we have to rearrange the code on our server a little
and then it will be made public.
Finally, here you can do preorders:
http://www.handheld-linux.com/wiki.php?page=Openmoko%20Beagle
Nikolaus
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