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Lego Segway
Jeff Lalo writes "This Guy has built a Lego version of Dean Kamens Segway Human Transporter. This thing was constructed using only Legos, two cheap (~$40) custom sensors and some smart programing using the open source BrickOS for the Lego RCX. The LegWay, as the creator calls it, can balance itself on two wheels and follow a line. Pretty cool for few lego blocks!"
"Another idea is to make LegWay stand up (from a lying position) on it's own. It can't do that right now, because the center of mass is below the axle when it on it's side."
Until or unless it's articulated, this will always be true. Segway can't right itself from this position either...?
I don't know if you were thinking of this one, but this guy made an MP5 and a Beretta out of Legos. Awesome stuff.
...I'll procrastinate tomorrow...
I'm impressed. I've worked on control of legged running, and a friend built a self-balancing unicycle in the 1980s. This new thing is the simplest self-balancer I've ever seen, and it does a good job. The video shows that it's quite stable.
obviously, both the lego and the original versions do pretty much the same thing. however, legway cannot guarantee that you do not fall. the segway, OTOH, pretty much does. it has to work with much higher precision sensors and much shorter update intervals. balancing on two wheels was never really difficult, it is basic robotics. making it practical and safe, however, is quite another story
BSD is for people who love UNIX. Linux is for those who hate Microsoft.
"Robert Metcalfe, the co-inventor of the Ethernet office networking standard, who is a friend of Mr. Kamen, told me via e- mail: 'Some months ago when speculation was running high, I said that Kamen's It was more important than the Internet, but not as important as cold fusion, had cold fusion worked out. The It I was talking about, which I did not disclose, was NOT Segway. That's all I can say.'"
There are 0x40000000 types of people: those who understand 32-bit IEEE 754 floating point, and those who don't.
Could one of you lil' PERL monkies do us all a favor?
In the article submissions form, put a little check box titled "Slashdot can mirror locally" or some other phraseology.
Then provide the original link like you normally would, but on the last line where it says "Read More | XX of YY comments" add another link that says "Slashdot Article Mirror"
Lower the water...don't raise the bridge.
Wherever there is an intersection, replace the cross with a circle (diameter same or less than path-mark width), and program in a delay that allows the device to continue straight whenever it sees a circle, still looking for an unbroken path that will override the temporary step.
Another method is to mount the sensors front to rear, scanning for the path itself (inside edge)...not left to right, looking for the outside edge of the path as the legway does.
Here's an artist who made a full-size playable Lego harpsichord (complete with an mp3 file).
You actually think you can navigate with just your two eyes?
Yes, and I can prove it.
I sail with a friend who's inner ears were damaged by an ear infection in childhood, leaving him with no inate sense of balance. So his entire balance is now done visually.
Does it slow him up? Well he's my dads age, is an ex British Olympic Fin Class sailor, and is now blue water cruising and is an Ocean Yachmaster / Instructor.
I guess if you can cope with the heaving deck of a yacht, you can cope with anything.
The advantage of course is that motion sickness is generally caused by a conflict of 'ear' balance and 'visual' balance (for want of better terms) so he doesn't get seasick. Thats the only way I actually found out, when I mentioned in conversation that he never got sick in rough seas, you'd never ever be able to tell otherwise.
Actually the reason you get motion sickness, and those panaromic cinemas fool you into thinking you are on a roller coaster is because your eyes are very important to navigation and balance.
Of course having the two systems (ear/visual) is a very good idea evolutionary, because one compensates for the weakness in the other.
But knowing that a blind colleuge of mine doesn't fall over in a heap, and my sailing companion doesn't either, I think I can justify in saying humans can operate with only one system perfectly well