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<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>Sorry about the down
time. Caught a nasty bout of bronchitis for the past few weeks. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>Regarding chargers, we (Tokyo
Hackerspace) can help acquire the DC/DC converters from Akizuki. The schematic
should also be modified so that the particular DC/DC converter is replaced with
something more readily available say from Digikey or via a DC/DC switcher and
some discrete parts. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>Akiba</span></font><font
color=blue><span lang=EN-US style='color:blue'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>FreakLabs Open Source
Wireless</span></font><font color=blue><span lang=EN-US style='color:blue'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>Web: </span></font><font
color=blue><span lang=EN-US style='color:blue'><a
href="http://www.freaklabs.org"><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>http://www.freaklabs.org</span></font></a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>Shop:</span></font><font
color=blue><span lang=EN-US style='color:blue'><a
href="http://www.freaklabsstore.com"><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>http://www.freaklabsstore.com</span></font></a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:blue'>Twitter: </span></font><font
color=blue><span lang=EN-US style='color:blue'><a
href="http://www.twitter.com/freaklabs"><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>http://www.twitter.com/freaklabs</span></font></a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:blue'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
hackupy-discuss-bounces+akiba=freaklabs.org@lists.hackerspaces.org
[mailto:hackupy-discuss-bounces+akiba=freaklabs.org@lists.hackerspaces.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>miloh<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, December 05, 2011
9:46 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Andy Isaacson<br>
<b><span style='font-weight:bold'>Cc:</span></b> hackupy-discuss@lists.hackerspaces.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Hackupy-discuss] USB
Chargers</span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span lang=EN-US style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>On Sun, Dec 4, 2011 at 2:03 PM, Andy Isaacson <<a
href="mailto:adi@hexapodia.org">adi@hexapodia.org</a>> wrote:<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span lang=EN-US style='font-size:12.0pt'>On Sun, Dec
04, 2011 at 12:39:20PM -0800, Dana S. wrote:<br>
> I created a wiki page so folks can share information on their USB charging<br>
> projects:<br>
><br>
> <a href="http://hackerspaces.org/wiki/Hackupy/USB_Charger" target="_blank">http://hackerspaces.org/wiki/Hackupy/USB_Charger</a><br>
><br>
> This weekend I put together a USB charger box for OSF (solar driven) and<br>
> will hopefully get a chance to field test it, do a more thorough write up<br>
> this week!<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span lang=EN-US style='font-size:12.0pt'>We got 4 kits
from Tokyo Hackerspace (THS) that I gave to ... Miloh I<br>
think. They are built around a neat DC-DC switching regulator that you<br>
can only get at one particular kiosk in Akihabara, they take 12V input<br>
and provide regulated 5V on 4 USB ports, with the relevant resistors set<br>
up so that iPods will charge correctly.<br>
<br>
The kits are at Noisebridge and are intended for OccupySF. I dunno if<br>
they've been soldered together already or not...<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>For anyone else reading, this is the kit from THS that
Andy wrote about: <a
href="http://taylanayken.wordpress.com/2011/06/25/12v-phone-charger-v2-0/#more-143">http://taylanayken.wordpress.com/2011/06/25/12v-phone-charger-v2-0/#more-143</a>
Just checked out the schematic and I like it, although I heard the DC-DC buck
converter is difficult to obtain: <a
href="http://akizukidenshi.com/catalog/g/gM-02038/">http://akizukidenshi.com/catalog/g/gM-02038/</a>
and (PDF link warning!) <a
href="http://akizukidenshi.com/download/hrd05003e.pdf">http://akizukidenshi.com/download/hrd05003e.pdf</a> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>Looks like this DC-DC buck costs $3.87 (300Yen) per
part in <st1:country-region w:st="on"><st1:place w:st="on">Japan</st1:place></st1:country-region>.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>Future modification using a easily sourced (relative
to US for us) replacement part might be a good idea. <o:p></o:p></span></font></p>
</div>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>I'll get folks to solder them rest of them today (3 parts)
at CHM. Can anyone help with a case design? <o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>It would be great if someone can recommend a good
generic case design that is simple enough to cut in acrylic or wood on the
noisebridge laser etcher, that would provide some mechanical support and basic
water resistance. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>Captive nuts are a common solution, but not at all
moisture repellent. Plus, it makes the inside a little less accessible. Acrylic
glue is another option, but doesn't allow for easy access into the case.
Any other thoughts?<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>-rma<o:p></o:p></span></font></p>
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style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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