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Maxim should send you a couple of DS chips as free samples no worries,
I've never had any problems in the past. <br>
As for the micro, I'm a big fan of atmels and use them for almost
everything I build, but in this case I think there's much to be said
for making it as simple as possible. If the router can handle it
directly, you might as well do it. The simple wiring up of a temp chip
to pins in the wrt is much simpler for non-electronics minded hobyists
than having to build a micro based circuit board and program it up.<br>
<br>
Andrew<br>
<br>
David Ashburner wrote:
<blockquote cite="mid46cb3ac291ea36b325687ebd6ca09e43@hotmail.com"
type="cite">
<pre wrap="">Hey, where are you guys buying those DS chips?
I want some!!
If you want to use one wire I compiled up the OWW software a while ago.
Its here:
<a class="moz-txt-link-freetext" href="http://www.melbournewireless.org.au/files/wrt54/Packages/">http://www.melbournewireless.org.au/files/wrt54/Packages/</a>
oww_0.81.7_mipsel.ipk
OWW project <a class="moz-txt-link-freetext" href="http://oww.sourceforge.net/">http://oww.sourceforge.net/</a>
If I remember correctly I didn't build the GUI version the idea bing
that you ran the OWW Client on a machine with a display.
You know, rather than interfacing a sensor directly to the serial port
on the router why not do it through a microcontroller?
I use Zilog and Atmel micros and it's a snap to interface to the serial
port on the WRT. You don't need to worry about level shifting as both
ends are 3.3V, you can even drive the micro from the WRT power supply.
mm, Z8F6423 gives you a lot of I/O for $12.84
On Oct 13, 2006, at 9:23 PM, Andrew Leech wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Is there a particular reason you need to use that chip? A similar
option
would be to use the DS1624 or similar temperature sensor that uses i2c
rather than the 1 wire. You can follow these instructions to add i2c to
a wrt54g: <a class="moz-txt-link-freetext" href="http://www.byteclub.net/wiki/index.php?title=Wrt54g">http://www.byteclub.net/wiki/index.php?title=Wrt54g</a>
I haven't done this personally, but it looks pretty well written.
This way you wont have to write drivers yourself to get it working, and
the temp sensor will probably be able to be read with the standard
linux
lm_sensors stuff, as mentioned on the page.
Good Luck,
Andrew
Paul Jones wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi all,
I'm trying to find a router + firmware that I can modify to read a
DS1820 temp sensor via a 1-wire bus. Just wondering if anybody knows
of
any links where this has already been done? The only one I have
managed
to find is this: <a class="moz-txt-link-freetext" href="http://owfs.sourceforge.net/WRT54G.html">http://owfs.sourceforge.net/WRT54G.html</a>
Cheers,
Paul.
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