Could a robot ride a skateboard

Yesterday, I was practicing with a skateboard and wondering about something. Do people know enough to program a computer, with a motion
system attached to it, to ride a skateboard?
This seems to be a far more difficult task than, say, a CNC metalworking machine. In the CNC application, all that matters is that the axes are moved precisely according to a pre-programmed sequence. In the skateboarding application, precision also matters, but it needs to react to the real time balancing situation.
To somewhat simplify this, could a robot ride a skateboard on a surface that is well known to the robot (no need to recognize the surface from vision sensors).
I was at a toy show in Rosemont last summer, and they had some enthusiast club show off "Linux robots". Those robots were physically fighting each other, in a very funny way. They looked like one year old kids as far as their ability to move and balance was concerned.
i
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Ignoramus20906 wrote:

Damage to their tailbones and skulls is much easier to repair than on humans, who should know better if they're over, say, 20....
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The answer is yes. For $2500 he can be yours.

http://www.youtube.com/watch?v=WyDupAdVspY

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I am shocked. Wow
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On Tue, 31 Aug 2010 10:50:36 -0500, Ignoramus20906


http://www.youtube.com/watch?v=BRAwFWJh0CM&NR=1

Im IMPRESSED!!!
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I am speechless...
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On 8/31/2010 2:42 PM, Ignoramus20906 wrote:

The assembly manual (!) 7 meg
http://www.plen.jp/PLEN_Manual_1.pdf
This is fascinating...
--

Richard Lamb




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On 8/31/2010 2:42 PM, Ignoramus20906 wrote:

I think this qualifies as "on topic". See him exercise (without his skin)...
http://www.aist.go.jp/aist_e/latest_research/2006/20060713/0526.asx
--

Richard Lamb




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On Tue, 31 Aug 2010 14:42:24 -0500, Ignoramus20906

Segway style balance detector, some drives and a small computer to tie it all together.
Maybe Im too old..or too young. When I see good engineering of this nature ..it gives me the warm and fuzzies.
We do indeed..."Live in Interesting times".
Gunner
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Gunner Asch wrote:

Sounds like they belong on the Terrorist list. Fundamentalist idiots like that are a menace to Mankind. Good thing Christ gave us the Sermon on the Mount and the Beatitudes.
Why do you hate Jesus?
mike
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Hate Jesus? Why would I?
Im Buddhist
Gunner
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No you aren't.
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Ignoramus20906 wrote:

After seeing these posts I was ready to be impressed, but the one that got me was a video of "Murata Boy" riding a bicycle down a flat balance beam almost exactly the width of the bicycle's tires.
Starts at about 1:35 here:

http://www.youtube.com/watch?v=M4rgaLW163k&NR=1&feature=fvwp

Jay Ts
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RCM only
On Tue, 31 Aug 2010 14:42:24 -0500, Ignoramus20906

I'm left looking for the guide wire which is holding it up. I didn't see even a hint of elbows coming out for it to balance itself nor did I see a hint of imbalance, or leaning around the first corner. Where are the hidden training wheels?
-- Happiness comes of the capacity to feel deeply, to enjoy simply, to think freely, to risk life, to be needed. -- Storm Jameson
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wrote:

Very cool, and very cute - you can't help but smile - but not very complicated given the power of today's microcontrollers and the simplicity of today's accelerometers.
But it IS very cool.
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As a second thought, this robot is not really balancing, everything is slow enough to be completely predictable. I am not quite as awed by it as I was on my first look.
i
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On Aug 31, 5:19pm, Ignoramus20906 <ignoramus20...@NOSPAM. 20906.invalid> wrote:

Oh, I wouldn't be at all surprised if it were actually balancing, but the algorithm isn't so terribly complex. In very broad strokes:
If accelerometer detects tilt to leff then lean to right if accelerometer detects tilt to right then lean to left etc. with forward & back.
Add some PID, and you're done. Then you can add in the leg kicks and arm waving as separate functions, and the main balancing loop will, well, balance.
There are autopiliot model helicopters that do this - I saw one on youtube that also has GPS, so you can fly it far away and push a button and it will come back to you. Again, this is very cool stuff, but with today's tools, not so very difficult to implement.
A bunch of high school kids made a segway clone a couple of years ago.
But still, it's fun to watch.
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On 08/31/2010 03:22 PM, rangerssuck wrote:

If it were that easy, I wouldn't have a full-time job.

Then try to get it working under all the circumstances that your customers expect it to, run into problems that you can't figure out because you slept through your control theory classes in school, and call me!

The Segway is just a lot more cool when Dean Kamen is talking about it.
--

Tim Wescott
Wescott Design Services
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wrote:

Shoot, I spent five years of my life just getting four robots to pick up a part here and place it there. Never did please management. Is that simple enough? I guess I should mention it was only about 200 per minute 24 X 7. it did teach me it was time to quit engineering and start farming.
karl
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Did you watch the video? No customers, no "circumstances" no bumps, just a smooth floor and what, 15 seconds of video? I still argue for this was a cool demonstration, but not that tough to do (for someone who is versed in the art).
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