Ya: expansion bay idea

Bas Wijnen wijnen at debian.org
Mon Jul 12 14:21:08 EDT 2010


I like the idea.  If you just make a connector with some interesting
pins (serial, some unused gpio), you can turn the ben into a mini-SAKC.

Adding boards inside the Ben doesn't sound very useful to me, as I would
probably want to change what's connected all the time.  But of course
that may be just me; I do see the beauty of having it inside, and can
imagine that some people only connect one thing anyway.

Removing the speaker sounds like a big sacrifice, though.

Also, the modifiable case is a very good idea IMO. :-)


On Mon, Jul 12, 2010 at 03:33:53AM -0300, Werner Almesberger wrote:
> The Ben has a bit of free space near the speaker that can be put
> to good use. E.g., for adding a connector for the serial console
> http://en.qi-hardware.com/wiki/File:Hwmod_serial_1.jpg
> or for adding the Ben variant of IDBG:
> http://www.almesberger.net/misc/ben/idbg-v1-pcb.jpg
> http://www.almesberger.net/misc/ben/idbg-v1-case.jpg
> This got me thinking of whether it would be possible to turn
> this into a general area for small extension modules.
> If removing the speaker, there would be a lot of space, about
> 400 mm2. Even better, there would be holes for mounting screws.
> Sufficiently thin boards could also be mounted directly on the
> speaker, although removing them may also mean to remove the
> speaker.
> This leaves the problem of making a hole into the case for any
> connectors the board may add. There are two issues here: 1)
> making complex holes can get messy and you only have one try,
> and 2) if using different boards, the case would have to have
> holes for all of them.
> However, there may be a solution: if the case would have a
> large opening covered by a removable plastic piece, one could
> just modify that piece, without having to touch the case.
> The piece could even be part of the board. Since the pieces
> should be very inexpensive to make, Sharism could just sell a
> bag of them to people who want to make this kind of additions.
> People could of course also build their own covers from other
> materials or with a 3D printer.
> How does this sound ?
> - Werner
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