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Author Topic: Lego Ball Balancing Robot  (Read 3748 times)

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Offline DelTopic starter

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Lego Ball Balancing Robot
« on: January 23, 2009, 01:28:55 PM »

Someone made this balancing robot using the Lego NXT:

[youtube]f8jxGsg3p0Y[/youtube]



Offline frodo

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Re: Lego Ball Balancing Robot
« Reply #1 on: January 23, 2009, 01:33:21 PM »
 :o wow, how do they make it balance like that on a bal!!??
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Offline cooldog

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Re: Lego Ball Balancing Robot
« Reply #2 on: January 23, 2009, 02:17:12 PM »
the ball is placed between 4 wheels and the robot activtates each wheel depending on witch way it is leaning
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Offline frodo

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Re: Lego Ball Balancing Robot
« Reply #3 on: January 23, 2009, 02:38:22 PM »
the ball is placed between 4 wheels and the robot activtates each wheel depending on witch way it is leaning
yes, i got that part. what i don't get, is how it knows which way it is leaning.
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Offline Trumpkin

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Re: Lego Ball Balancing Robot
« Reply #4 on: January 23, 2009, 02:39:22 PM »
Quote
what i don't get, is how it knows which way it is leaning.
Gyro.
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Offline frodo

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Re: Lego Ball Balancing Robot
« Reply #5 on: January 23, 2009, 02:41:13 PM »
ok, so not accelerometer then which is what i was thinking.  :D what is a gyro? is it like a spinning thing like you see on tv?
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Offline Trumpkin

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Re: Lego Ball Balancing Robot
« Reply #6 on: January 23, 2009, 02:42:25 PM »
Robots are awesome!

Offline frodo

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Re: Lego Ball Balancing Robot
« Reply #7 on: January 23, 2009, 02:46:54 PM »
oh, i get it now. thanks Trumpkin  ;)
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Offline HDL_CinC_Dragon

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Re: Lego Ball Balancing Robot
« Reply #8 on: January 23, 2009, 02:50:28 PM »
is it like a spinning thing like you see on tv?
Youre thinking of a gyroscope :)
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Offline frodo

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Re: Lego Ball Balancing Robot
« Reply #9 on: January 23, 2009, 02:53:59 PM »
i know, i've just figured it out.  :)
« Last Edit: January 24, 2009, 04:36:04 AM by frodo »
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Offline Indiana_Geoff

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Re: Lego Ball Balancing Robot
« Reply #10 on: April 27, 2009, 09:31:38 PM »
I wonder if you used a captured ball as a hip on a walking robot, could you increase it's flexibility and make it more adaptable to shock and motion?

Offline HDL_CinC_Dragon

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Re: Lego Ball Balancing Robot
« Reply #11 on: April 29, 2009, 01:25:05 PM »
In theory you probably could but you would have to worry about the strength of the joint i think
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Offline hazzer123

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Re: Lego Ball Balancing Robot
« Reply #12 on: April 29, 2009, 01:54:48 PM »
Hmm what i'd like to see is an extension of this type of robot similar to the inverted double pendulum. So a robot on 2 balls balancing :D

Now that would be impressive!
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Offline chelmi

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Re: Lego Ball Balancing Robot
« Reply #13 on: April 30, 2009, 08:35:03 AM »
is it like a spinning thing like you see on tv?

Youre thinking of a gyroscope :)


A MEMS gyro *is* a type of gyroscope. It doesn't use a spinning wheel but a vibrating part.
See http://en.wikipedia.org/wiki/MEMS_gyroscope

 


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