On 10/04/2012 04:48 PM, Julian Calaby wrote:
Hi Ben,
Pretty graphs are always useful. It'd be nice to compare other brands
/ models of card too, but I'm guessing that's outside the scope of
what you're planning to achieve.
Are you planning to open-source any of the software / hardware you're
making to do this?
I'm going to publish the code for the attenuator (including
eagle layout & gerber files for the Arduino shield). Will market them
for sale as completed units too. Will publish a simple command-line
tool to adjust the attenuation, and unit will have knobs to turn
so you don't really need a computer to control it anyway.
Nice! I wish I had a good reason to build one =)
We'll be able to test various APs..but on the client side,
I doubt we'll test other than ath9k anytime soon, although
I think our software would support other WiFi NICs if you didn't
try to do any of the virtual interface stuff.
Makes sense.
Ok, here's a link that has some pics of the attenuator and a graph
showing link speed, throughput rate, and rx-signal quality. I have
lots more testing of various combinations, but plan to spend more time
on automating it before I do much more manual testing.
I'll not spam the list further with such links, but feel free to check
back on my blog...I plan to post more results there as I get the time.
http://bens-workshop.blogspot.com/2012/10/programmable-attenuator-arduino-shields.html
If anyone else has any similar data, I'd love to see it posted somewhere.
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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