RE: Twiddler gripeing and Re: Rebuilding wearable...

From Wear-Hard Mailing list Archive (WH) Maintained by R. Paul McCarty

Hi Tony,

Hard to say.  The Gumstix+thumbstix-gs are thin and light, and the Li-Ion
battery required to self-power need not be very large.  An interesting
comparison would be that weight as compared to the weight of the cable
being replaced.

I haven't opened up a Twiddler before, so I don't know how much weight
might be shed by replacing the existing electronics with a Gumstix-based
solution.  Perhaps replacing the existing mechanical switches with
something based on a Freescale e-field sensor (MC33794) could also help
shed some more weight and make the whole thing more robust in the process.

Andrew.

Thus spake Tony Havelka:
> What about the weight issue?  Right now, the Twiddler is quite light.
> Adding electronics, batteries, etc... will increase the weight of the
> unit.
>
> -Tony
>
>
>> -----Original Message-----
>> From: Andrew Plumb [mailto:]
>> Sent: Tuesday, April 25, 2006 1:28 AM
>> Just had a thought.  One of the Bluetooth-enabled Gumstix just might fit
>> inside a twiddler case.  I'll have to pull apart my v1.0 Twiddler and
>> check when I get home next week (in the UK all this week).
>>
>> In the Gumstix community there is a great need for more
>> hardware/mechanical board-mounting options.  A "version 3" Twiddler may
>> be
>> just what's needed, especially if you combine it with something like the
>> new thumbstix-gs.  It has Li-Ion battery connections, LCD connections
>> (possibly for a simple character buffer display) and can be USB
>> powered/charged, and has the obvious USB-device mode for plugging into
>> host systems directly.
>>
>> Andrew.
>>
>> Thus spake Ralf Ackermann:
>> > Hello,
>> >
>> > I'll put instructions for making the Twiddler (both the serial first
>> > version as well as the one with the PS/2 interface) connecting via
>> > Bluetooth online in May (actually - it's just a matter of finding the
>> > time).
>> > On
>> >  	http://www.iptel-now.de/HOWTO/WEAR_TOP/wear_top.html
>> > you find instructions for the PS/2 => serial adapter (AVR 2313 based)
>> -
>> > and I'll just combine this with a BT module (either a version with an
>> > ATmega128 (as used in BlueMP3 or BTNode) => can host a minimal BT
>> stack
>> or
>> > a BT module that does serial port emulation on its own).
>> >
>> > If I look at my pages - most of these things were done in 2002 already
>> -
>> > it's just that university projects (not related to wearable computing)
>> > occupy so much time that things do not step forward as fast as they
>> could.
>> >
>> > best regards
>> >   Ralf
>> >
>> >>
>> >>> What about the Bluetooth Twiddler2?  Wasn't Handykey working on a
>> >>> Bluetooth Twiddler?
>> >>>
>> >>> But where are the Bluetooth Twiddlers? I was promised Bluetooth
>> >>> Twiddlers. I don't see any Bluetooth Twiddlers? Why? Why? Why?
>> >>
>> >
>> > ---------------------------------------------------------------
>> >      _       Dr. Ralf Ackermann          
>> > |/ | | |\/| Multimedia Communications           Merckstrasse 25
>> > |\ |_| |  | .                          64283 Darmstadt, Germany
>> > Tel.: (+49) 6151 16-6138                Fax: (+49) 6151 16-6152
>> > ---------------------------------------------------------------
>> >               http://www.kom.tu-darmstadt.de/~rac
>> > ---------------------------------------------------------------
>> >
>> > _______________________________________________
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>> > 
>> > http://www.haven.org/mailman/listinfo/wear-hard
>> >
>>
>>
>> --
>>
>> E-mail:    
>> WWW:       http://www.plumb.org/tekmage/
>> Photos:    http://www.flickr.com/photos/aplumb/
>> Think:     http://clothbot.blogspot.com/
>>
>> Victory!  The bits shall ring out, the message of my domain...
>>
>>
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>>
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>
>

-- 

E-mail:    
WWW:       http://www.plumb.org/tekmage/
Photos:    http://www.flickr.com/photos/aplumb/
Think:     http://clothbot.blogspot.com/

Victory!  The bits shall ring out, the message of my domain...

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