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Unread 21-01-2016, 11:09
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FRC 5817 Shooter Prototype Teaser #2

So after seeing the comments and questions posted on the first teaser, we decided to make a second one that better showcases our shooting abilities. It exists, it is not a field component, and it is even accurate! And yes, it does have a cool name.

Enjoy!
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Unread 21-01-2016, 11:14
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by Poseidon1671 View Post
So after seeing the comments and questions posted on the first teaser, we decided to make a second one that better showcases our shooting abilities. It exists, it is not a field component, and it is even accurate! And yes, it does have a cool name.

Enjoy!
How do we even know it's FRC parts and not a bench grinder with a flywheel?
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Unread 21-01-2016, 11:15
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Re: FRC 5817 Shooter Prototype Teaser #2

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Originally Posted by AdamHeard View Post
How do we even know it's FRC parts and not a bench grinder with a flywheel?
^ Asking the real questions
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Unread 21-01-2016, 11:15
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Re: FRC 5817 Shooter Prototype Teaser #2

Have you tested with multiple balls?

If not you might want to..
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Unread 21-01-2016, 11:19
Kevin Leonard Kevin Leonard is offline
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Re: FRC 5817 Shooter Prototype Teaser #2

I appreciate the accuracy and the theatricality of this video, but whats with all the secrecy? Everyone knows 2 million ways to shoot a ball by now, I doubt you're like crazy innovating, and some people could benefit from seeing how you're shooting so accurately.

Although you have every right to keep it a secret if you want, I just don't see the point.

Anyway, nice shots and good luck this season.
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Unread 21-01-2016, 11:29
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Re: FRC 5817 Shooter Prototype Teaser #2

If anyone wants to see some true accuracy in practice, I think you'll really enjoy this video. Bonus, you can see their shooter isn't using a bench grinder!

-Mike
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Unread 21-01-2016, 11:38
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by Michael Corsetto View Post
If anyone wants to see some true accuracy in practice, I think you'll really enjoy this video. Bonus, you can see their shooter isn't using a bench grinder!

-Mike
Michael, The kids have found an innovation on the shot vs. all others posted. It is 100% FRC legal and with all FRC components and battery. We are trying to show what is possible so other teams don't settle and keep working their prototypes. But there is a lot of learning in the development and optimizing of the prototypes and we don't want to deny the other teams this learning opportunity by just giving it away.
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Unread 21-01-2016, 11:56
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by Springerman View Post
Michael, The kids have found an innovation on the shot vs. all others posted. It is 100% FRC legal and with all FRC components and battery. We are trying to show what is possible so other teams don't settle and keep working their prototypes. But there is a lot of learning in the development and optimizing of the prototypes and we don't want to deny the other teams this learning opportunity by just giving it away.
Kudos on making this prototype!

However...

It's kind of ridiculous to say your shot is innovative yet not say how.

Additionally, your sample size of posted prototypes is very small.

I would rather encourage teams to look to for inspiration in the video I posted, since they can actually learn how 1717 pulled off such an amazing shot.

When you're posting claims of "fastest shot" or "super accurate", you have to be willing to take some "shots" yourself

Side note: some of those shots from 10ft range in your video hit the side of the goal. I'd encourage you guys to keep iterating and try to improve the accuracy of Asset 003

-Mike
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Unread 21-01-2016, 12:59
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Re: FRC 5817 Shooter Prototype Teaser #2

Since this doesn't give away the design it is just a little hard to tell in the video, how high off the ground is your exit point, as in how tall is the shooter?
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Unread 21-01-2016, 14:14
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by Michael Corsetto View Post
If anyone wants to see some true accuracy in practice, I think you'll really enjoy this video. Bonus, you can see their shooter isn't using a bench grinder!

-Mike
It is really cool how consistent 5817 have made their shooter. As Ike stated, getting it aimed at the goal properly, in competition will be the next challenge.

I agree with Michael that 1717's accomplishment is more impressive since they are showing the results of the whole system that drives around, picks up the balls, acquires the target then shoots, not just a shooter that has been aimed by hand and clamped down. The video Michael linked is one of three that 1717 published after the end of the 2012 season. In those three videos, they score every single one of about 200 shots. It also seemed that in those videos, the ball goes through the hoop just to the left of center, indicating that their whole system is capable of only around 2 inches of variability over the 200 shots.
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Unread 21-01-2016, 14:17
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by philso View Post
It is really cool how consistent 5817 have made their shooter. As Ike stated, getting it aimed at the goal properly, in competition will be the next challenge.

I agree with Michael that 1717's accomplishment is more impressive since they are showing the results of the whole system that drives around, picks up the balls, acquires the target then shoots, not just a shooter that has been aimed by hand and clamped down. The video Michael linked is one of three that 1717 published after the end of the 2012 season. In those three videos, they score every single one of about 200 shots. It also seemed that in those videos, the ball goes through the hoop just to the left of center, indicating that their whole system is capable of only around 2 inches of variability over the 200 shots.
There is a HUGE difference being consistent with one ball versus all balls.

Once a ball has a few hundred shots on it they become much, much softer.
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Unread 21-01-2016, 14:19
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Re: FRC 5817 Shooter Prototype Teaser #2

did anybody notice how chewed up those balls were? Chunks hanging off the sides is what I saw.
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Unread 21-01-2016, 15:10
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by Bruceb View Post
did anybody notice how chewed up those balls were? Chunks hanging off the sides is what I saw.
That was a result of shooting the balls with wheels that had tread ziptied to them. You'll notice that we did use multiple balls, and they were both torn up, one badly, one not so badly. We got rid of the zipties and it has not been nearly as bad since then. The chunks you saw hanging off the one ball were actually pieces of duct tape. The other one has some holes in the fabric, but that is all.

Also, the main purpose of this video was to showcase the power we were able to get. We have measured only 6 inches of arc from a linear path. We aren't expecting it to be the most accurate prototype shooter ever, as we aren't controlling speed in any way, just plugging the motors into a battery. We are expecting it to become more accurate as we use better bearings, wheels, add speed control, mount it to a sturdy frame, etc. We also weren't wasting much of our time with the teaser, as it was made outside of shop hours, took only 30 minutes, and the CAD design is already done. The only thing we can really do right now is prototype and wait for parts.

Finally, we are trying to avoid showing the shooter, as we don't want to give anything away yet regarding the other mechanisms of the robot . As JesseK said, we wouldn't want to see our own designs used against us!
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2017 - Team 5817: Return of the bench grinder


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Unread 21-01-2016, 15:58
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Re: FRC 5817 Shooter Prototype Teaser #2

I am really happy at the discussion that this has brought up, especially how many great veteran frc mentors have decided to chime in.

Yes we are a rookie team, but our mentors and teacher advisor I would say are some of the best in California. I understand that people want more details and that those will one day be released.

Also please keep in mind that being a rookie team puts us into a whole different boat than other teams at a regional event. Our number is high, we have no record to go off of, and people aren't necessarily going to know who we are at our events. By posting these videos while hiding key dimensions and ideas it allows us to build a hype for our team. Getting people interested in our theme, the quality of robots we produce, and how 5817 operates. We want people to know 5817 before we get to the event and see our level of play. That is all the videos were for and to show what is possible without just giving a clear answer.

Also being a rookie means that we are competing for the rookie all star award as well. Winning that award would mean so much to the students, and we want to keep our innovations a secret until the time is right.
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Unread 21-01-2016, 16:44
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Re: FRC 5817 Shooter Prototype Teaser #2

Quote:
Originally Posted by steelerborn View Post
I am really happy at the discussion that this has brought up, especially how many great veteran frc mentors have decided to chime in.

Yes we are a rookie team, but our mentors and teacher advisor I would say are some of the best in California. I understand that people want more details and that those will one day be released.

Also please keep in mind that being a rookie team puts us into a whole different boat than other teams at a regional event. Our number is high, we have no record to go off of, and people aren't necessarily going to know who we are at our events. By posting these videos while hiding key dimensions and ideas it allows us to build a hype for our team. Getting people interested in our theme, the quality of robots we produce, and how 5817 operates. We want people to know 5817 before we get to the event and see our level of play. That is all the videos were for and to show what is possible without just giving a clear answer.

Also being a rookie means that we are competing for the rookie all star award as well. Winning that award would mean so much to the students, and we want to keep our innovations a secret until the time is right.
Thanks for the background Jon.

It would be awesome if you would be willing to share, at least, what your process was for reaching this point. Why do you want a shot with ~6" of drop from linear? What shooter options have you considered, tested, or designed? What constraints are you working under for this prototype? Height constraints, motor allocation, weight constraints, etc?

The bench grinder was brought up because many teams can grab 4 CIMs, strap them together, and make a shot like you've shown. The problem is, 4 CIMs in the shooter seems fairly impractical (and heavy), so most teams won't consider it. I'm sure this prototype is doing something NOT using 4 CIMs, but I know you're keep those sort of details under wraps.

Even if you can't share the design, we'd love to hear your process for reaching the point you're at, why you categorize this as a successful prototype, and what you would advise other teams to do with the lessons you've learned so far in your team's rookie year. I'm sure rookies, especially, would be inspired to hear a fellow rookie team's experiences.

Best,

-Mike
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