Jordan Bradford | 5 Mar 17:08 2010
Picon

Re: CubeStormer - World's fastest LEGO Rubik's Cube solving robot

In lugnet.robotics, Brad Stiles <bradstiles <at> bellsouth.net> wrote:
> Is the computer helping to solve the puzzle, or is all the processing on the brick?

The solving is done by the PC using Cube Explorer.

"Built entirely from lego elements with a lego web camera to scan the faces of
the cube, The solve engine (algorithm) running on the computer is provided by
the incredible "Cube Explorer "software which also provides the colour
recognition required to determine the exact location of each coloured square.
Thanks to Herbert Kociemba for making his work available to anyone wishing to
use it! Respect! "Cube Explorer" has the ability to produce very fast solutions
to a successfully scanned cube, usually around 20 face turns! Doesn't sound a
lot , but it is believed that around 20 turns are enough to solve ANY 3x3x3 cube
combination. I'm still working on "CubeStormer" I would like to see it reach
sub-10 and feel it's close to that. but reliability begins to suffer when you
start to push things just that bit too far.....
Special thanks to David Gilday for his assistance with the software interface to
Cube Explorer."

Juergen Stuber | 7 Mar 13:17 2010
Picon

Re: NXT remote control by Power Functions handset

Hi Philippe

"Philippe Hurbain" <philohome <at> free.fr> writes:
> 
> [<http://philohome.com/pfnxtremote/pfnxtrem.htm Here>] you'll find how to
> transform a Power Functions IR receiver into a NXT sensor. With this hacked
> receiver you'll be able to control your NXT robot with a Power Functions
> handset.

Nice idea!

W.r.t. the warning against using an NXT to PF converter:

You could try adding a Schottky diode in the power supply line
to protect the 4.3V supply of the NXT against somebody connecting 9V.
The question is whether it still works with the even lower voltage
caused by the diode.

Jürgen

--

-- 
Jürgen Stuber <juergen <at> jstuber.net>
http://www.jstuber.net/

Philippe Hurbain | 8 Mar 10:24 2010
Picon

Re: NXT remote control by Power Functions handset

Hi Jürgen,

> Nice idea!
>
> W.r.t. the warning against using an NXT to PF converter:
>
> You could try adding a Schottky diode in the power supply line
> to protect the 4.3V supply of the NXT against somebody connecting 9V.
> The question is whether it still works with the even lower voltage
> caused by the diode.
>
Yes, that should work, placing it in the converter. Current in the receiver used
as a sensor is very low, so the voltage drop in the Schottky would be low too.
Maybe it would need some trimming of resistors values.

Philo

Bryan Bonahoom | 11 Mar 01:15 2010
Picon

Brickworld - 2010 Event Kits & Preorder

<<http://www.brickworld.us/_images/bw10-logo.png>>

[Share - Learn - Explore - Discover]

[2010:  Bricks In Space]

Brickworld is happy to announce that we have designed 2, yes, TWO classic space
themed event kits for the 2010 event.  The kits are:

[Moon Rover]

<<http://www.brickworld.us/images/_preorder/bw2010-rover-large.jpg>>

[Speedster Spaceship]

<<http://www.brickworld.us/images/_preorder/bw2010-spaceship-large.jpg>>

These kits are posted for preorder along with all the other preorder items at
<http://www.brickworld.us/bw2010/view/preorder/>

Just sign in to your account to place your order.  And, as a bonus, any LEGO
Architecture set purchased via the preorder site will be autographed by the
designer (Adam Reed Tucker).

All preorder items will be waiting for you when you check in at the event in
Chicago.  Event kits are available only while supplies last.

Stay tuned for more information.

Regards, the Brickworld Team
(Continue reading)

Gustav Jansson | 11 Mar 17:32 2010

LEGO HockeyBots

A couple of weeks ago I posted the
<http://www.hitechnic.com/blog/ir-seeker/hockey-bot HiTechnic HockeyBot> on the
new HiTechnic blog and video on <http://www.youtube.com/watch?v=bJdzHquWc98
youtube>.

My brother Pehr was inspired and made his own LEGO Hockey robot video: 
<http://www.youtube.com/watch?v=LktEWxzRtUM YouTube - Lotechnics.dv>

Enjoy!

 Gus

Bryan Bonahoom | 28 Mar 15:41 2010
Picon

Brickworld - Premiere Item

<<http://www.brickworld.us/_images/bw10-logo.png>>

[Share - Learn - Explore - Discover]

[2010:  Bricks In Space]

Brickworld is excited to announce that Jonathan Bender, author of "LEGO - A Love
Story" will be attending Brickworld this year.

<<http://www.brickworld.us/images/_preorder/bw2010-a-love-story-large.jpg>>

In honor of this, we have made arrangements with his publisher for the book to
be available to registered attendees at a discount ($20 instead of the $24.95
retail price) if it is purchased through our preorder site.  In addition,
Jonathan has agreed to autograph all of the pre-order books.

Jonathan will also be making presentations at Brickworld about his experience
writing the book; which included Brickworld 2008.

Don't miss this wonderful opportunity to own a piece of LEGO history.

The book is posted for preorder along with all the other preorder items at
<http://www.brickworld.us/bw2010/view/preorder/>

Just sign in to your account to place your order.  And, as a bonus, any LEGO
Architecture set purchased via the preorder site will be autographed by the
designer (Adam Reed Tucker).

All preorder items will be waiting for you when you check in at the event in
Chicago.
(Continue reading)

Bryan Bonahoom | 31 Mar 01:53 2010
Picon

Brickworld - Build On The Spot Challenge

<<http://www.brickworld.us/_images/bw10-logo.png>>

[Share - Learn - Explore - Discover]

[2010:  Bricks In Space]

The Brickworld Team has arranged to create and execute our second annual Build
On-The-Spot (BOTS) challenge at this year’s event. This challenge will be
completed in addition to the regular Mindstorms displays and events.

So, the BOTS challenge will begin at 2 PM on Thursday afternoon. The contest
will be held Thursday evening starting at 8 PM. (times are subject to
adjustment) 

The BOTS challenge requires that you gain comprehension of the rules, construct
a robot and program your robot in the 6 hours between 2 PM and 8 PM. The BOTS
rules will be revealed at 2 PM. The rest is up to you. 

Unlike last year, a team is not required.  You must be a fully registered
Brickworld attendee to participate and teaming up is encouraged.

Remember, this year's Brickworld theme is 2010:  Bricks in Space.  As for the
rest of the rules...well, your guess is, uh...your guess.

If you plan to participate, please respond to this message so we know we have
plenty of participants like last year.

We look forward to seeing you in Chicago!!! 

Regards, the Brickworld Team 
(Continue reading)


Gmane