18-02-2009 12:10

wo-bot 141

Re: pic: WildStang 2009

Very impressive again wildlstang. got a few questions for you though. How many balls can that thing hold. Also what kind of drive train do you got?
good luck. Its unfortunate we wont see you unless we get put in the same division at nationals.

18-02-2009 12:16

Herodotus

Re: pic: WildStang 2009

This is essentially exactly the same as one of our early ideas. We narrowed it down to the three wide dumper or a single helix and went with the helix so we could have the option of ranged firing.I was fairly indifferent between the "barf bot" as it was designated on our team, and the helix we ultimately went with. It'll be interesting to see the two designs and how effective they are in action.

It looks great. Good luck and hopefully we'll see you guys at IRI or Atlanta.

18-02-2009 12:18

ttldomination

Re: pic: WildStang 2009

My question is how do you guys bring the balls up further?

Like, your robot is full in the picture, but how do they go up?

18-02-2009 12:20

Collin Fultz

Re: pic: WildStang 2009

Stang -

That looks hot. I always amazes me the things you guys can do and still stay under the weight budget. Great work as usual. I'm really looking forward to seeing you guys at Boilermaker!

18-02-2009 12:22

Cory

Re: pic: WildStang 2009

This looks far too simple to be a Wildstang robot. The last robot to be this simple? 2003. Last championship? 2003.

I think this bot will go far this year.

18-02-2009 12:22

lukevanoort

Re: pic: WildStang 2009

I'm going to guess that the floor of their hopper moves up (hey, if I guess this on every robot with a big hopper, eventually I might get one right).

18-02-2009 12:26

s_forbes

Re: pic: WildStang 2009

It's starting to look more and more like simple high speed dumpers* are the way to go! I certainly didn't expect to see so many winning teams use this approach.

That's an interesting storage mechanism, how exactly does it work? It looks like the bottom of those side compartments elevates up, but it's hard to tell.



*That still doesn't sound like the right term... how about high velocity uni-directional orbit ball ejection systems? Rolls off the tongue nicely.

18-02-2009 12:39

Raul

Re: pic: WildStang 2009

Drive = 4 wheel crab/swerve
How many balls = theoretically, we can hold about 36, but that is not ideal because it causes jamming that delays how long they can be shot/deposited in a trailer. We can keep 20 well lined up in silos and consistently deposit them within 5 seconds, sometimes 4 seconds. 36 balls would take as much as 10 seconds due to having to actively agitate them and waiting for them to settle.
lukevanoort is right. We have 4 silos that store balls and we raise the angled floors. See the WildStang sign - it goes up and down on each side separately.

18-02-2009 13:34

Lil' Lavery

Re: pic: WildStang 2009

How are the balls sorted into the silos without jamming?

18-02-2009 13:40

Madison

Re: pic: WildStang 2009

That's how our hopper works, for what it's worth. I'm surprised we haven't seen more of them.

18-02-2009 13:55

Raul

Re: pic: WildStang 2009

Each silo can only fit one ball across, and they just fall into the silos from the top. They sort themselves out to fall into the silos pretty well as we drive around picking them up. When one silo fills up they just fall into another.

18-02-2009 15:34

Schnabel

Re: pic: WildStang 2009

Hey Raul, what motor and gear ratio (if any) are you using on your ejector?

18-02-2009 16:24

Qbranch

Re: pic: WildStang 2009

Very Slick. I like the dual silo concept... great way of getting around the problem of not being able to collect balls while dumping/floor is in transit to reset position. Cool!

Any practice videos? Cool programming tricks?

Looking good stang... See you in Chicago.

-q

18-02-2009 17:57

Mike Soukup

Re: pic: WildStang 2009

Hey, what do you mean by that? The 2004-2008 robots were sim.... oh, wait, I guess you have a point there. In all fairness, the 2006 robot wasn't unnecessarily complex; the target following turret added a lot of accuracy and was a key to our success.

We didn't take any videos of the robot in action, you'll have to wait until MWR.

No cool programming tricks yet, but we do have some up our collective sleeves; we hope to turn our partially functioning traction control system into something usable by next week.

18-02-2009 18:11

Ian Curtis

Re: pic: WildStang 2009

Is it a trick of the light, or did you double up your rover wheels? If so, what advantage did they give you?

18-02-2009 18:31

Dave Scheck

Re: pic: WildStang 2009

Rover wheels? No. Follower wheels, yes. There is a shaft encoder on the rover wheels and light sensors on a freewheeling disk on the same shaft that get processed by a custom board at each module. The 4 boards then connect into the i2c bus to communicate with the cRIO.

18-02-2009 18:49

Jay Trzaskos

Re: pic: WildStang 2009

well that about settles that, I just have get to Chicago now so I can see you guys in person

18-02-2009 20:45

A-train

Re: pic: WildStang 2009

That thing looks pretty sweet. Can't wait to see you guys in action at the Midwest Regional. Good luck!

18-02-2009 20:59

Rich Kressly

Re: pic: WildStang 2009

Wait, where did Raul's head go?
resisting joke about it being a non-functional decoration because I'm a nice guy
In all seriousness ... holy crap.....I can't wait to see 111 in Atlanta and over the web.

19-02-2009 11:06

Sarah H

Re: pic: WildStang 2009

nice bot guys