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View Full Version : pic: Team 383 teaser

Manoel
09-02-2008, 16:28
[cdm-description=photo]30154[/cdm-description]
dtengineering
09-02-2008, 16:29
I'm thinking it's a big mouse.

Jason
T3_1565
09-02-2008, 16:31
ball bot drive system?? I designed something similar, so I hope thats what it is, it would work pretty well in this competition
thefro526
09-02-2008, 18:00
ball drive like the technocats second robot in 2003?
Vikesrock
09-02-2008, 18:21
I'm thinking it's a giant mouse as well. The wheel is to hold the ball down and the two rollers with the black and white discs will be read by a banner sensor. Should give pretty accurate xy position if it works well.
Manoel
09-02-2008, 21:31
Well, those are our wheels, so it can't possibly be a ball drive... :D

http://www.chiefdelphi.com/media/img/f6e/f6eb7dddf2d67cf833384867e3bbff25_m.jpg (http://www.chiefdelphi.com/media/photos/29987)
EricH
09-02-2008, 23:00
Some form of shooter? Or is it just a trapping device? (I'm leaning towards the former.)
T3_1565
09-02-2008, 23:00
Well, those are our wheels, so it can't possibly be a ball drive... :D

http://www.chiefdelphi.com/media/img/f6e/f6eb7dddf2d67cf833384867e3bbff25_m.jpg (http://www.chiefdelphi.com/media/photos/29987)

well thats dissapointing... lol :D is it some sort of sensor for..... something..... a make shift gyro or something.... not sure anymore lol
tdlrali
09-02-2008, 23:26
Definitely an encoder, I like this setup. How will you do quadrature?
Vikesrock
09-02-2008, 23:37
Definitely an encoder, I like this setup. How will you do quadrature?

If they want the equivalent of quadrature they could use two banner sensors on each disc.
Mr. Freeman
10-02-2008, 03:55
I'm thinking it's a giant mouse as well. The wheel is to hold the ball down and the two rollers with the black and white discs will be read by a banner sensor. Should give pretty accurate xy position if it works well.

I agree. The black and white discs combined with a lack of mounting point for a motor give it away.
Manoel
10-02-2008, 09:07
I'm thinking it's a big mouse.

Jason

That's exactly how the CAD folder that holds the assembly is named. ;)

Definitely an encoder, I like this setup. How will you do quadrature?

The black and white pattern is so coarse that it will be really easy mounting the sensors such that their electrical output is 90 degrees out of phase.
By the way, this assembly is too tiny to use a Banner sensor (the discs are actually 1" washers) so we'll be using standard photodiodes and phototransistors.