Openmoko Beagle Hybrid

Dr. H. Nikolaus Schaller hns at goldelico.com
Fri May 21 16:55:19 CEST 2010


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 <hns at 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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