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ext Andrew J. Barr wrote:
<blockquote cite="mid1171208397.371.5.camel@localhost" type="cite">
<pre wrap="">On Sun, 2007-02-11 at 14:18 +0530, mayank jain wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On 2/11/07, Andrew J. Barr <a class="moz-txt-link-rfc2396E" href="mailto:andrew.james.barr@gmail.com"><andrew.james.barr@gmail.com></a> wrote:
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<blockquote type="cite">
<pre wrap="">On Sun, 2007-02-11 at 00:27 +0530, mayank jain wrote:
</pre>
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<pre wrap="">Hi guys,
I recently found that an ISP - Reliance Telecom here provides a USB
modem, which uses CDMA technology for establishing a dial-up
connection. This modem works perfectly with a Linux based machine.
Device details at
<a class="moz-txt-link-freetext" href="http://www.reliancecommunications.co.in/Communications/Netconnect/netconnect_hotnew.html">http://www.reliancecommunications.co.in/Communications/Netconnect/netconnect_hotnew.html</a>
Look for "Reliance Netconnect USB Modem".
Is it possible that this modem can be attached to N800 & used for
internet? Because if this is so, internet would be available to my
device from almost anywhere - Wifi or no Wifi.
</pre>
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<pre wrap="">You would want to find some kind of Bluetooth device for this. This
works fine with the Nokia tablets.
The 770 had limited support for USB host mode but AFAIK the N800 doesn't
seem to have this feature. No one has tried it yet, at least ;)
</pre>
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<pre wrap="">Oh,
I just saw the thread mentioning 'injecting power into USB" - & this
modem needs 5V/500ma, from USB - So i dont think this would be
possible...
</pre>
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<pre wrap=""><!---->
It would be horribly unwieldy, you'd need a power injector device as
well as a USB hub (or at least some kind of adapter). It would defeat
the "portable" aspect of the Nokia tablets.
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It just needs a some kind of hack that injects little bit +5v to
770/N800 USB<br>
connector so that it detects USB device present there. It does not need
actual<br>
power suplied by this way.<br>
<br>
I have personally used two kind of hacks for this. Simpler is just to
use<br>
USB HUB that has +5V input from power supply. These units has one<br>
schotky diode preventing them in normal operation feeding power back<br>
to host. With 770/N800 usage, just replace this diode with wire that<br>
feeds +5V back because it is behavior that we need.<br>
<br>
I have done same hack for some self-powered USB devices, so then no hub<br>
needed al all. Anyhow, all of these hacks needs to have external +5V
power supply<br>
becausse 770/N800 is not suplying power to them.<br>
<br>
The other problem is that 770/N800 is having only minimun USB driver set<br>
in kernel and if your device is not matching small number of<br>
manufacturer/device ID, you need to have also kernel driver.<br>
<br>
<blockquote cite="mid1171208397.371.5.camel@localhost" type="cite">
<pre wrap="">
This is why Bluetooth is ideal for this kind of situation; you'd have
your cell phone in your pocket, your tablet in hand...pervasive Internet
access almost anywhere. This is what I do, at least.
</pre>
</blockquote>
I also recommend bluetooth until you have very good reason to use<br>
other methods. I personally used USB to connect embedded realtime<br>
data accusation/real time control device.<br>
<br>
Kate <br>
<blockquote cite="mid1171208397.371.5.camel@localhost" type="cite">
<pre wrap="">
What you describe I believe was at least possible on the 770, however.
</pre>
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<pre wrap="">Right Andrew?
:)
Makuchaku
<a class="moz-txt-link-freetext" href="http://www.makuchaku.info/blog">http://www.makuchaku.info/blog</a>
</pre>
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