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 Robotics / 1980
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Subject: 
Re: FetchBot, The Truck and patents
Newsgroups: 
lugnet.robotics
Date: 
Thu, 31 Dec 1998 14:06:19 GMT
Original-From: 
Jakob Nebeker <jakob@writeme./spamless/com>
Viewed: 
1442 times
  
Hey, your 'bots RULE!!  I especially liked the fetchbot, the way you
move the arm up and down AND close the claw with only one motor.  Would
you mind giving a more detailed explanation of how that works?

PV

Ben Williamson wrote:

I've just added two new robots my homepage:

        http://www.pobox.com/~benw/lego/

The FetchBot searches for dark objects to grab, lift and deposit
elsewhere.  The grabber and the arm are driven by one motor.  The
page includes an animation of the arm grabbing a block, and photos
of the gearing and cams that make it work.

The Truck is a robotic tractor-trailer vehicle with rack-and-pinion
steering.  The tractor contains sensors and the steering and drive motors,
while the trailer carries the RCX controller and an earthmover. The Truck
can back up in a straight line by using the sensors to determine if the
trailer is off centre.

BTW, I got some fun feedback from The Probe robot that I posted earlier,
including mail from someone who works for Digital Instruments.
Apparently they hold the patent on the technique that my robot uses, they
just do it on a somewhat finer (nano) scale.  Sounds like a theme for a
competition: how many patents can you infringe using Lego?  :)

Hope you enjoy the new models,

- Ben.

-------------------------------------------------------------------
Ben Williamson       benw@pobox.com     http://www.pobox.com/~benw/

--
Did you check the web site first?: http://www.crynwr.com/lego-robotics

--
------------------------------------------------------------
Purple Viking (Jakob Nebeker)   ____________________________
email: jakob@writeme.com       | the sentence below is false
ICQ  : 6245080                 | the sentence above is true
------------------------------------------------------------
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics



Message has 3 Replies:
  RE: FetchBot, The Truck and patents
 
Me too!! (...) -- Did you check the web site first?: (URL) (26 years ago, 31-Dec-98, to lugnet.robotics)
  Re: FetchBot, The Truck and patents
 
(...) I agree. Despite of the nice images and descritive text, I don't full understand how it works. Could you elaborate slightly more on it? Fredrik (26 years ago, 31-Dec-98, to lugnet.robotics)
  Re: FetchBot, The Truck and patents
 
(...) I was afraid it wouldn't be terribly clear, thanks for saying so. I've added four more images to the bottom of the page that might help. They show the arm with most of the robot base removed, so you can see the gears and cams more clearly. (...) (26 years ago, 31-Dec-98, to lugnet.robotics)

Message is in Reply To:
  FetchBot, The Truck and patents
 
I've just added two new robots my homepage: (URL) FetchBot searches for dark objects to grab, lift and deposit elsewhere. The grabber and the arm are driven by one motor. The page includes an animation of the arm grabbing a block, and photos of the (...) (26 years ago, 31-Dec-98, to lugnet.robotics)

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