How to pick up a frisbee

[vikesrock777]

Originally Posted by Djur

Why would you need to push the discs one way or another? Would you have two shooting mechanisms?

I believe they were talking about pushing frisbees one way or another based on orientation. One side would be for frisbees that are already in the correct orientation while the other side would be for those that need flipping.

[Siri]

Originally Posted by vikesrock777

I believe they were talking about pushing frisbees one way or another based on orientation. One side would be for frisbees that are already in the correct orientation while the other side would be for those that need flipping.

Should be simpler than that. If the disk is already on its side as they said, flipping them over is as conceptually simple as tilting one wall either direction. We got a prototype doing this over the weekend.

If you're trying to get them right-side up on the right hand side:

|.\..|
|..|.|
|./..| ...<< With the open side left, you open the left wall enough to tip it, then open right so it slides down and out.


|../.|
|.|..|
|..\.| ...<< With the open side right, you just open the right wall so it flops out. (May or may not need to kick the left wall inward, depending on bottom slope and exact geometry).


As far as floor pickup to vertical robot entry, I'll just leave this here: 2012.

[vikesrock777]

Originally Posted by Siri

Should be simpler than that. If the disk is already on its side as they said, flipping them over is as conceptually simple as tilting one wall either direction. We got a prototype doing this over the weekend....

Ahh, I may have misunderstood when they said

where the disks actually come into the robot on the side.

I interpreted it as on the side of the robot as opposed to a frisbee in the orientation you drew out, though looking back that doesn't seem to make any sense . Thanks for pointing that out.

[smclean1969]

Picking up the disks from the field will be a big advantage since there will be a lot of missed shots. That will be especially true in the playoffs where one or two teams are likely to be running back to the feeder zone and shooting. The third robot either plays defense or picks up the disks for some close up shots. I'm very confident the elite teams will be picking up the disks with ease.

[Herbblood]

My team is trying to work on the dispute as to whether or not to pick up off the floor. Our only problem to pick up is that our mentors prefer us to pick up from within the bumper frame, since we only have a small amt of space for it, we're no too sure on how to go with it. Any suggestions?

[F22Rapture]

That would depend entirely on how you're implementing your shooter and to a lesser extent your hopper.

[TimTheGreat]

I was thinking of using a goalie lacrosse stick. Putting it on pneumatics might make it go fast enough for it to scoop up the frisbee.

[MisterG]

Originally Posted by smclean1969

I'm very confident the elite teams will be picking up the disks with ease.

I think that this is a thinking trap that we all fall into.

The elite teams do everything well; that's why they are elite teams. The question for the rest of us is whether adding a certain feature to our robot will be a good investment or not.

If the pickup allows you to acquire disks faster than a trip to the feeder station and it doesn't take too much away from other robot functions (size wise, resource wise, etc.) then it could be a plus.

In short, a good floor pickup that doesn't detract from other functionality would be a great thing. I personally don't see it as a must have in this years game.

Al G.

[CalTran]

Is floor pick up necessary? Back in Logomotion, floor pick up was thought to be a necessity. Team 1503 clearly showed everyone wrong. Their robot was hand fed until it was beefy enough to take on Einstein.

[SciBorg Dave]

Picking up a frisbee during seeding rounds would be a good idea. Maybe a lot of poor shooters.
During the elimination round there will not be that many disc on the floor to pick up because most of the shooters will be very good.

[falconmaster]

Here is a prototype we made that picks up frisbees and then the conveyor belt will act as a hopper where a pneumatic loader will pop the frisbee up and then a second piston will shoot the frisbee into the linear shooter that will be mounted on top of the conveyor belt
https://www.youtube.com/watch?featur...&v=EUEg4TCwSd8
We can also use this arm to manual load from the human player

[gabrielau23]

Originally Posted by CalTran

Is floor pick up necessary? Back in Logomotion, floor pick up was thought to be a necessity. Team 1503 clearly showed everyone wrong. Their robot was hand fed until it was beefy enough to take on Einstein.

Well, tell that to 2537.....
We didn't think floor pickup would be neccesary either. Our autonomous was pretty darn good, and our minibot was no slouch, either. At Chesapeake and DC we got wrecked. Sometimes our own alliance members were wondering why we were just standing in front of the feeder station.

[cloudroth6]

Originally Posted by Twest3259

the simplest solution i could think of was to pick them up like you'd pick up a basketball. just use rollers to suck it up.

that is what we are doing. taking what we learn from last years collector and putting it in to this years challenge.

[pfreivald]

Originally Posted by cloudroth6

that is what we are doing. taking what we learn from last years collector and putting it in to this years challenge.

And it even kind of not quite sort of works maybe the same-ish!

[Dinoyan]

How to pick up frisbee
http://www.youtube.com/watch?feature...&v=YbTj3swVT18