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Here is our new sound localizing robot called Nic_3. It is capable of fixing the
azimuth of a sound source that is located in the horizontal plane. The
localizing process is done using the stereo audio amplifier that we already used
with Nic_1 and Nic_2. (For several reasons Nic_2 has not been published yet.)
The amplifier is directly connected to the RCX inputs 2 and 3. (input 1 is used
to power the sensor).
The RCX samples 2 x 1000 data-points on each ear at a frequency of 36kHz. Then
it processes the time-lag between both signals within 100ms. This is
impressively fast, because we apply a high speed phase detection.
The RCX repeats the sampling and detection process 10 times and takes the
average of the measurements. Then the RCX computes the azimuth from the time-lag
and sends the angle to the NXT through the HiTechnic IR-link.
The RCX program has been written in ULTIMATE ROBOLAB and H8-Assembler, while the
NXT has been programmed using the LabVIEW NXT-toolkit.
http://www.convict.lu/htm/rob/phase_detection.htm
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In lugnet.robotics, William Toenjes wrote:
> Congrats to Steve Hassenplug on the mention at
> http://blog.wired.com/geekdad/2008/09/geekdad-invents.html
> PSumo Programmable Sumo Robots with LEGO MINDSTORMS at Brickfair
> For all the details see http://www.teamhassenplug.org/sumo/PSumo.html
> Even Tormod Askildsen (Head of LEGO Community Development) got in on the action
> :)
> RFID Sensors available at http://www.codatex.com/shop/
> Looking forward to the documentation so that less technically minded "Geek Dads"
> and our kids can wrap our brains around the constructions & programming.
> Hope to see this at Brickworld 2009!
> --
> Bill
> (TooMuchDew)
> G.M.L.T.C.
That's very cool!! Almost like using pre-programmed building blocks in a
computer (like Visual-Orieneted Programming), but instead..on cards! How cool
would it be for TLG to see "NXT motion packs" like trading cards? TLG could
make an NXT add-on pack for something like this.
Great job, Steve!!!
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Hi all,
My Mindstorms kit has been gathering dust for sometime but I just unpacked
it (my daughter is now old enough to join in). However I'm having loads of
grief trying to run it under XP. I read that RIS2.0 supports XP and the
brick can be flashed with RIS 2.0 with the more powerful instruction.
However I can't find a RIS2.0 CD. I tried Lego, but they couldn't supply
one.
Does anyone know how/where I can get RIS 2.0?
Cheers... Martin
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View this message in context: http://www.nabble.com/Help-locating-RIS-2.0-and-updating-from-1.5-tp19357571p19357571.html
Sent from the LEGO Robotics mailing list archive at Nabble.com.
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