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Unread 03-12-2014, 03:03 PM
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pic: Team 971 Presents: Mammoth

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Unread 03-12-2014, 03:05 PM
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Re: pic: Team 971 Presents: Mammoth

Intake isn't fast enough, also doesn't have enough control loops.

Just kidding, great looking bot. Excited to see it play this weekend!
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Unread 03-12-2014, 03:08 PM
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Re: pic: Team 971 Presents: Mammoth

971 is the master of the intake.

Can't wait for this weekend!

-Mike
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Unread 03-12-2014, 03:09 PM
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Re: pic: Team 971 Presents: Mammoth

This thing will win regionals. Yes, that is plural.
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Unread 03-12-2014, 03:19 PM
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Re: pic: Team 971 Presents: Mammoth

This is a gorgeous machine. Can't wait to watch it on the field.

-Nick
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Unread 03-12-2014, 03:19 PM
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Re: pic: Team 971 Presents: Mammoth

Really enjoy the use of the intake to catch/pickup bouncing balls. It's a weird problem to solve, but you make it look effortless. Also, the over the back shot is so fun to watch.

And a question, just to satisfy my own curiosity - the hall-effect sensors on the Claw's pivot, is it safe to assume that each one of them corresponds to some unique position of the claw? Is there any reason for doing this sort of setup over an absolute encoder or similar sensor? Reliability? Cost? Simplicity?
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Unread 03-12-2014, 03:20 PM
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Re: pic: Team 971 Presents: Mammoth

The separate upper and lower jaw is absolutely brilliant. Your programmers must have had fun with all those possibilities.
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Unread 03-12-2014, 03:21 PM
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Re: pic: Team 971 Presents: Mammoth

Amazing machine, can't wait to watch it in action!
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Unread 03-12-2014, 03:24 PM
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Re: pic: Team 971 Presents: Mammoth

Big fan of the spinning lower forks to help center the ball.
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Unread 03-12-2014, 03:29 PM
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Re: pic: Team 971 Presents: Mammoth

The motorized prongs are beautiful.
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Unread 03-12-2014, 03:35 PM
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Re: pic: Team 971 Presents: Mammoth

It's cool to see the progress of your robot based on the amount of 2x4's and pools noodles attached to the top of our 2013 drive base.

Great job everyone on 971, this looks like an absolute beast of a machine. I look forward to playing together at SVR.
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Unread 03-12-2014, 03:53 PM
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Re: pic: Team 971 Presents: Mammoth

Quote:
Originally Posted by Ty Tremblay View Post
Big fan of the spinning lower forks to help center the ball.
Quote:
Originally Posted by Gregor View Post
The motorized prongs are beautiful.
Many thanks. We're really proud of this design. Its something that we picked up on rather early and found it worked really well. The nice thing is that it allows us to center the ball without having the intake stick far out of the robot. In this year's wide open game, we felt it was necessary to keep things inside the frame as much as possible. We get a large intake width without having a large intake sticking out of the robot. It was difficult to package, but we are proud of the result. We are very excited to see how it does at Sacramento and SVR.

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Originally Posted by Answer42 View Post
The separate upper and lower jaw is absolutely brilliant. Your programmers must have had fun with all those possibilities.
Yes. It is really nice how we are able to use the full range of the claw, and this comes with the programmability of the robot. Austin can likely fill you in more in this area. We love how we can use both sides of the intake to grab the ball and shoot. We hope this allows for more flexible gameplay and will allow us to explore a wide variety of in-game strategies.

Quote:
Originally Posted by thefro526 View Post
And a question, just to satisfy my own curiosity - the hall-effect sensors on the Claw's pivot, is it safe to assume that each one of them corresponds to some unique position of the claw? Is there any reason for doing this sort of setup over an absolute encoder or similar sensor? Reliability? Cost? Simplicity?
We have 3 hall effect sensors and 1 encoder for each jaw. The hall effects are for zeroing. The one in the middle zeros the claw and the top and bottom hall effects set a software limit for each side of the claw.
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Last edited by kevincrispie : 03-12-2014 at 05:20 PM.
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Unread 03-12-2014, 04:17 PM
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Re: pic: Team 971 Presents: Mammoth

Forget the flashy claw, take the bumpers off and show us some close ups of that frame design =)

I've been a huge fan of 971's fabrication techniques ever since I started paying close attention to your designs back in 2012. If you can post any amount of parts photos sometime this season, I'd be grateful.
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Unread 03-12-2014, 04:18 PM
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Re: pic: Team 971 Presents: Mammoth

This is a great looking robot.
We hope to see you guys in St. Louis!!
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Unread 03-12-2014, 04:24 PM
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Re: pic: Team 971 Presents: Mammoth

Quote:
Originally Posted by AlecMataloni View Post
Forget the flashy claw, take the bumpers off and show us some close ups of that frame design =)

I've been a huge fan of 971's fabrication techniques ever since I started paying close attention to your designs back in 2012. If you can post any amount of parts photos sometime this season, I'd be grateful.
I was wondering when someone would mention that .

I'll see what I can find. For those who can't see it up close in person, we'll likely post some pictures throughout the season, and make more public at by the season's end. The drivetrain is a result of 4+ years of iteration, and we tried to pay even more attention to detail. So far, we like the result.

Quote:
Originally Posted by Bob Steele View Post
This is a great looking robot.
We hope to see you guys in St. Louis!!
Thanks! You guys are looking good too. Good luck at your competitions as well.
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Last edited by kevincrispie : 03-12-2014 at 04:42 PM.
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