Hi Jean-Marc,<div><br></div><div>As far as I can see, it is not easy to build a RF circuit from the scratch. It usually requires a lot of trial-and-error. So I prefer off-the-shelf modules.�Currently I'm testing two different modules:</div>
<div><br></div><div>One is based on the very popular Nordic nRF24+ chip (around $5)</div><div><br></div><div><a href="http://www.hoperf.com/rf_fsk/24g/RFM70.htm">http://www.hoperf.com/rf_fsk/24g/RFM70.htm</a></div><div><br>
</div><div>I grabbed mine here</div><div><br></div><div><a href="http://www.futurlec.com/">http://www.futurlec.com/</a></div><div><br></div><div>The other one is Microchip MRF24J40 module (around $9)</div><div><br></div><div>
<a href="http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en535967">http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en535967</a></div><div><br></div><div>I think major distributors carries it. You can do a search here:</div>
<div><br></div><div><a href="http://www.findchips.com/avail?part=MRF24J40MA">http://www.findchips.com/avail?part=MRF24J40MA</a></div><div><br></div><div><br></div><div><br></div><div>Thanks</div><div><br></div><div>Sungjune Lee</div>
<div>=======================</div><div><a href="mailto:sjlee@sdcontrols.com">sjlee@sdcontrols.com</a></div><div><a href="http://arduinoexplained.blogspot.ca/">http://arduinoexplained.blogspot.ca/</a></div><div><br></div><div>
<br></div><div><br></div><div><br><br><div class="gmail_quote">On Thu, Sep 20, 2012 at 10:52 AM, Jean-Marc LeBlanc <span dir="ltr"><<a href="mailto:jeanmarc.leblanc@gmail.com" target="_blank">jeanmarc.leblanc@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hey I am very interested in your solution. I am looking to interface it with arm.� what IC are you using to send the 2.4 ghz?<br clear="all">
<br>Jean-Marc Le Blanc<br>---<br><br>"Do you pine for the nice days of Minix-1.1, when men were men and wrote their own device drivers?" Linus Torvalds<div class="HOEnZb"><div class="h5"><br>
<br>
<br><br><div class="gmail_quote">On Thu, Sep 20, 2012 at 10:44 AM, Sungjune Lee <span dir="ltr"><<a href="mailto:sjlee@sdcontrols.com" target="_blank">sjlee@sdcontrols.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Mahdi,<div><br></div><div>I happen to building a open-source wireless network for use with low end microcontroller systems such as Arduino.�For now, the protocol takes up around 30K of program memory and 2K of data, which hopefully will be downsized to fit into Arduino Uno.�If successful, it will be using off-the-shelf IEEE802.15.4 wireless module ($5 - $10) rather than wifi. So you can build each control/sensor board for around $10. I'll post the schematic and the source on my blog sometime later in this year.</div>
<div><br></div><div>If you want a ready to use solution then please check this:</div><div><br></div><div><a href="http://www.panstamp.com/" target="_blank">http://www.panstamp.com/</a></div><div><br></div><div>Thanks,</div>
<div><br></div>
<div>Sungjune Lee</div><div>========================================</div><div><a href="mailto:sjlee@sdcontrols.com" target="_blank">sjlee@sdcontrols.com</a></div><div><a href="http://arduinoexplained.blogspot.ca/" target="_blank">http://arduinoexplained.blogspot.ca/</a></div>
<div><br></div><br><div class="gmail_quote"><div>On Thu, Sep 20, 2012 at 9:46 AM, Mahdi Yusuf <span dir="ltr"><<a href="mailto:yusuf.mahdi@gmail.com" target="_blank">yusuf.mahdi@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>
Hi,�<div><br></div><div>I was wondering if anyone at the ModLab has played around with home automation. I have been playing around with this sort of thing for a long time, its really interesting now that things like the�raspberry pi board are available at such a small size.�</div>
<div><br></div><div>I was wondering if anyone knows of wifi switches and sensors that could be deployed around the house to control things like lights and lamps on the cheap that doesn't require�a lot�of installation and�relativity�cheap. I am hoping to build something small like a prototype and see where it goes from there.�</div>
<div><br></div><div>I would like to use the raspberry pi as the controller and have sensors connect to it over the wifi and potentially have something like an iPhone do the connecting. I have built servers like this before, I just looking for some information on hardware and what is possible.</div>
<span><font color="#888888">
<div><div><br></div>-- <br><div>Mahdi Yusuf</div><br>
</div>
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