LOTD: Sketch-a-Move

Posted by: ninti

LOTD: Sketch-a-Move - 22/09/2004 04:17

http://www.lwk.dk/sketch_a_move/sketch_content.html#

Check out the video:

http://www.lwk.dk/sketch_a_move/sketch-a-move_mov.html
Posted by: tfabris

Re: LOTD: Sketch-a-Move - 22/09/2004 06:24

Okay that is SICK.

MUST OWN NOW. MUST OWN NOW. MUST OWN NOW.

This is one of those things that was never predicted in sci-fi movies. The sci-fi writers' idea of a futuristic toy involves holograms and brainstem interfaces. This is like sci-fi come to life, but it's much cooler and simpler...

And I haven't even looked at the website yet to see if I can get them or how much they cost... All I've seen is the video.

That is just so utterly cool.
Posted by: tfabris

Re: LOTD: Sketch-a-Move - 22/09/2004 06:29

Nooooo!!!!! It's not a commercial product yet, it's a couple of students inventing the next billion-seller and giving it to Mattel for free.... Argh....

Either that or it's an elaborate hoax done with radio control cars.

You know what, I think it is.

Must be a hoax.

No one would invent something that utterly cool and then just give it to Mattel. No one smart enough to make something that amazing could possibly be that stupid about its worth.

Interesting thing is, as a proof-of-concept, I think it might still be viable. Sure it's just a hoaxed video, but I think the technology described is actually do-able. Anyone agree?
Posted by: andy

Re: LOTD: Sketch-a-Move - 22/09/2004 07:15

I'm sure it is do-able now, but not to the level of accuracy demonstrated on the video. They do say on their website that they think it is tehnically possible as well.

Ideally you would want the top of the car to be a touch sensistive LCD like my Pocket PC screen. That would make it extremely expensive of course.

You could get the same functionality out of a cleanable film of plastic that was touch sensitive, like the suggest in the video, but it wouldn't be as neat as an LCD.

Using a Pocket PC strapped to the top of a radio controlled car body would be the easiest way to prototype this, though the 600Mhz Xscale in my Dell might be a bit overkill for the final product
Posted by: tfabris

Re: LOTD: Sketch-a-Move - 22/09/2004 08:32

I'd bet you could do it almost exactly like they showed it, no expensive LCD needed. Either an X/Y pen (like those pens that remember what you write), or just a very simple piezoelectric touchgrid with no attached display. The microprocessor and electronics would have to be highly integrated and very specialized, but you wouldn't need much CPU power if you simplified it to the bare minimums to get the job done.

The only thing the microprocessor would need to do is remember a series of impulses from the piezoelectric grid, in order, and then play them back, in order. A small and simple math calculation to determine the amount of wheel turn to reach the next X/Y point, some tweaking of values to fit the real world, and you're done.
Posted by: tfabris

Re: LOTD: Sketch-a-Move - 22/09/2004 08:45

Or what about this. Ooo Oooo OOOO this could work.

You ever see those tiny little radio control cars at the mall? I believe those are the very same radio control cars that were used to create the hoax video in the first place. Okay, they are SUPER cheap, like 20 bucks retail, right? You get the radio control and the car in a little box and it's cheap fast fun, right?

So what you sell instead, is a PocketPC or a Palm interface module. Inside the module is the transmitter part of that really cheap radio control. Only, instead of buttons on the radio control activating its directions, it's serial commands from the PocketPC or Palm that turn the car left and right and such.

Some very simple Palm/PocketPC software, and for not much more than 20 bucks a pop, you can do almost exactly what they were doing on that video. The only difference is that you're drawing the line on the screen of the PocketPC.

Now, the people have to already own a PocketPC or a Palm, so that's your target audience. But hey, that projet could be done cheaply, practically overnight and on shelves by this Christmas...

Wait, doesn't the new Nintendo handheld come with a pen-touchscreen interface? Can you say, tailor-made development platform with huge potential pre-carved market niche? I remember people wondering what the pen interface for the Nintendo handheld was gonna be good for. Well, we just saw one thing it could be good for.

PATRICK?!?!?!?!? HELOOOOO?!?!? ARE YOU HEARING THIS??!?!?!?!
Posted by: andy

Re: LOTD: Sketch-a-Move - 22/09/2004 11:51

Enable the remote control device with Bluetooth and then a whole army of Pocket PCs and fancy touch screen mobile phones can control it (though of course you would need software for all the types of devices you supported).
Posted by: ineedcolor

Re: LOTD: Sketch-a-Move - 22/09/2004 13:08

Links are dead already...Damn.
Posted by: tfabris

Re: LOTD: Sketch-a-Move - 22/09/2004 14:38

Quote:
Enable the remote control device with Bluetooth

I knew bluetooth would be brought up. But wouldn't that be very expensive? The type of thing I'm talking about would be a $20.00 item, assuming the owner already had a handheld PC. Also, not all handhelds have bluetooth, I'd want something that could work for every single handheld device out there, going back to even the old palmpilots. You could do it, I'm sure...
Posted by: loren

Re: LOTD: Sketch-a-Move - 22/09/2004 15:39

anyone have the video in cache they wanna post? I gotta see the amazingness...
Posted by: ninti

Re: LOTD: Sketch-a-Move - 22/09/2004 18:15

> You know what, I think it is.

You know looking at it again, and looking at the parent pages, I have to agree with you. Based on their other projects, I doubt they could have done this. Sorry, I would not have posted it if I had realized it.
Posted by: andy

Re: LOTD: Sketch-a-Move - 22/09/2004 18:18

I have the video, but it is 16MB so I would need someone else to host it.
Posted by: andy

Re: LOTD: Sketch-a-Move - 22/09/2004 18:21

If you don't use Bluetooth then you need to work out how else to connect the serial port of your radio control device to the Pocket PC/Palm etc

These PDAs don't have standard connections for their serial ports (some of them don't even have serial ports) so you would need an array of different connectors for them.

So Bluetooth might even be cheaper, maybe...
Posted by: Skunk

Re: LOTD: Sketch-a-Move - 22/09/2004 18:27

see it here
Posted by: matthew_k

Re: LOTD: Sketch-a-Move - 22/09/2004 18:50

See Sony Erricson CAR-100.

All it needs is someone to write software.

Matthew
Posted by: pca

Re: LOTD: Sketch-a-Move - 22/09/2004 20:15

Quote:
PATRICK?!?!?!?!? HELOOOOO?!?!? ARE YOU HEARING THIS??!?!?!?!


Hmmm? What? Did you say something?

Oh. Right. Well, yes, it could be done. Much like you suggest, although a quick think-through suggests that you would need some form of feedback to allow precise positioning of the steering, since the little RC cars are not all that likely to run straight.

Bluetooth control as suggested would also be doable, as the cost of bluetooth transceivers has dropped dramatically over recent months. Some of the new modules are cheap, very tiny, and quite low power.

Another possibility for control would be via a PC of some sort equipped with a webcam. Draw on paper, show it to the camera, and the car follows the pattern.

If you wanted to draw on the car directly, you could implement a very small graphics tablet on it, which normally work electromagnetically, using quite simple circuitry (although fairly clever software) and an x-y grid of PCB traces.

OK, how about this? Some small accelerometers and gyros in the car, along with a reasonable processor. Pick up the car, put it in learn mode, move it around, and it memorises the route. Put it down and hit go, and it retraces the pattern. Add bluetooth, teach one, and make a whole swarm move in synchronism

Or put a solar cell on the top, add a transparent resistive touchpanel, and you can both draw on it and have it power the thing.

So, yer, the concept is possible. Whether you could make it so cheap Mattel could sell it I'm not sure, although quantity manufacture in the far east is pretty effective at making high tech cheap.

The real problem I can see is that these poeple might get annoyed if someone else makes the thing. Also one would need some form of financial backing.

pca
Posted by: tfabris

Re: LOTD: Sketch-a-Move - 22/09/2004 20:21

Quote:
although a quick think-through suggests that you would need some form of feedback to allow precise positioning of the steering, since the little RC cars are not all that likely to run straight.


Doesn't matter. You want it as cheap as possible, and who cares if it's exactly right, making the car do what you want despite sloppy steering would be part of the fun.