#278585 - 30/03/2006 18:16
RGB LEDs
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pooh-bah
Registered: 06/04/2005
Posts: 2026
Loc: Seattle transplant
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Gah! Is this really necessary?
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10101466 (2x60GB, Eutronix/GreenLights Blue) (Stolen!)
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#278586 - 30/03/2006 18:39
Re: RGB LEDs
[Re: Robotic]
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new poster
Registered: 07/10/2004
Posts: 4
Loc: The LBC
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#278587 - 30/03/2006 18:42
Re: RGB LEDs
[Re: Robotic]
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old hand
Registered: 14/04/2002
Posts: 1172
Loc: Hants, UK
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A fancy version of those wands you can make with several LEDs and a mercury switch really. Awesome though!
Gareth
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#278588 - 30/03/2006 18:42
Re: RGB LEDs
[Re: Robotic]
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carpal tunnel
Registered: 25/12/2000
Posts: 16706
Loc: Raleigh, NC US
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Ignoring the annoying posturing in the video, typical of people who have these sorts of things, that's actually pretty darn cool.
If only I could point my wheel backwards and put on it a message that said "Turn off your damned brights!"
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Bitt Faulk
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#278589 - 30/03/2006 18:46
Re: RGB LEDs
[Re: Robotic]
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carpal tunnel
Registered: 08/07/1999
Posts: 5549
Loc: Ajijic, Mexico
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Is this really necessary?
No, not really. But it is a clever and interesting bit of technology. And, heck, it's only $12,500 including the Pirelli tires, so how can you go wrong?
tanstaafl.
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"There Ain't No Such Thing As A Free Lunch"
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#278590 - 30/03/2006 18:50
Re: RGB LEDs
[Re: Robotic]
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carpal tunnel
Registered: 20/12/1999
Posts: 31600
Loc: Seattle, WA
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I think the technology is really interesting, and the people who came up with it get lots of geek points with me. I'm curious how the system knows the rotation speed of the wheel so that the image works at all speeds.
But I see the following problems:
1. The distraction quotient for other drivers on the road would be so high, I expect that municipalities will quickly outlaw it.
2. It would be the ultimate theft target, and since it's mounted where it's so easy to get to, those things wouldn't last unless you hired an armed guard for every place you parked it.
Still, very cool piece of tech.
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#278591 - 30/03/2006 18:54
Re: RGB LEDs
[Re: Robotic]
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carpal tunnel
Registered: 08/03/2000
Posts: 12341
Loc: Sterling, VA
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1) pretty cool 2) you could probably recoupe some installation costs by pimping advertising space to local businesses. or by just pimping. 3) wouldn't be fun to drive at night if many people had them 4) I'm glad these are surely illegal in Virginia 
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Matt
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#278592 - 30/03/2006 19:08
Re: RGB LEDs
[Re: tfabris]
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carpal tunnel
Registered: 25/12/2000
Posts: 16706
Loc: Raleigh, NC US
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I would imagine that there's a rotation sensor in there that works a lot like those rotation counters you see on semi-trailers sometimes. Basically, a heavy weight on the bottom of a pivot so that it knows which way up is. Combine that with an optical sensor and a pulse generator, one pulse for each rotation, and the fact that it won't work at very low speeds anyway, and I think you've got a viable solution.
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Bitt Faulk
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#278593 - 30/03/2006 19:11
Re: RGB LEDs
[Re: wfaulk]
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carpal tunnel
Registered: 25/12/2000
Posts: 16706
Loc: Raleigh, NC US
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Or you could attach a magnetic or other proximity sensor to the brake calipers and have the thing it senses rotating with the wheel. That would produce less wobble.
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Bitt Faulk
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#278594 - 30/03/2006 19:13
Re: RGB LEDs
[Re: wfaulk]
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carpal tunnel
Registered: 20/12/1999
Posts: 31600
Loc: Seattle, WA
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Quote:
That would produce less wobble.
I think that method would produce zero wobble. I seem to recall seeing a bit of wobble in the video, so I'll bet it's handled more like your first method.
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#278595 - 30/03/2006 20:30
Re: RGB LEDs
[Re: Robotic]
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addict
Registered: 29/06/2002
Posts: 531
Loc: Triangle, VA
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Oh I wish i could put those on my VW Bug 
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Modifying and Tweaking is a journey,
not a destination................................
MKIIa : 60gig - 040103286 - Blue - v2 + PCATS tuner
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#278596 - 30/03/2006 21:56
Re: RGB LEDs
[Re: tfabris]
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addict
Registered: 25/06/2002
Posts: 456
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I can't watch the video because I am currently browser plugin impaired. However, I assume you guys are talking about somebody who took one of these or these and stuck them on a car wheel, right? If so: (a) it IS cool, and (b) you're only $37.50 away from doing it yourself. Nerds with bling.  Let's get busy, people! 
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#278597 - 30/03/2006 22:05
Re: RGB LEDs
[Re: music]
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addict
Registered: 25/06/2002
Posts: 456
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It looks like pimpstar has the commercialized version of this. If you feel like spending $19,500 instead of $37.50.
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#278598 - 30/03/2006 22:12
Re: RGB LEDs
[Re: music]
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carpal tunnel
Registered: 23/09/2000
Posts: 3608
Loc: Minnetonka, MN
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Nope it's a video of the pimpster thing.
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Matt
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#278599 - 31/03/2006 03:27
Re: RGB LEDs
[Re: tfabris]
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carpal tunnel
Registered: 17/12/2000
Posts: 2665
Loc: Manteca, California
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Quote:
Quote:
That would produce less wobble.
I think that method would produce zero wobble. I seem to recall seeing a bit of wobble in the video, so I'll bet it's handled more like your first method.
The wobble in the video could be from video strobing, like how the wagon wheels sometimes seem to go backward. Nothing to do with how it's clocked.
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#278600 - 31/03/2006 07:42
Re: RGB LEDs
[Re: wfaulk]
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old hand
Registered: 14/04/2002
Posts: 1172
Loc: Hants, UK
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Quote:
Or you could attach a magnetic or other proximity sensor to the brake calipers and have the thing it senses rotating with the wheel. That would produce less wobble.
I am pretty sure it would be that method. There is some kind of interface to supply power and/or data to the wheels so it's probably solved within that problem.
Gareth
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#278601 - 31/03/2006 18:22
Re: RGB LEDs
[Re: g_attrill]
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addict
Registered: 25/06/2002
Posts: 456
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Quote:
Quote:
Or you could attach a magnetic or other proximity sensor to the brake calipers and have the thing it senses rotating with the wheel.
I am pretty sure it would be that method.
Or you could follow the links I posted earlier to see a complete discussion of the Hall effect sensor in this application and how it monitors the rotation, complete schematics for how to build one, and the software needed to program said hardware.
Or you could continue to ignore those links and ramble on about how it might be done. Your choice.
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#278602 - 31/03/2006 21:24
Re: RGB LEDs
[Re: music]
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pooh-bah
Registered: 25/08/2000
Posts: 2413
Loc: NH USA
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Well yeah! I mean, how could anybody charge $20 grand for somethign that's available for free on line? You'd think people would buy $2000 AC power cords...oh wait...nevermind...  -Zeke
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#278603 - 31/03/2006 22:03
Re: RGB LEDs
[Re: music]
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carpal tunnel
Registered: 17/12/2000
Posts: 2665
Loc: Manteca, California
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Quote:
Quote:
Quote:
Or you could attach a magnetic or other proximity sensor to the brake calipers and have the thing it senses rotating with the wheel.
I am pretty sure it would be that method.
Or you could follow the links I posted earlier to see a complete discussion of the Hall effect sensor in this application and how it monitors the rotation, complete schematics for how to build one, and the software needed to program said hardware.
Or you could continue to ignore those links and ramble on about how it might be done. Your choice.
Party pooper!
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