High goal shooters, where are you shooting from?
 

As I talk to teams I have found that most either are designing to drive right up to the tower and shoot or are planning to shoot somewhere in the courtyard. We plan to shoot from as close to the tower as possible to maximize our accuracy. Where are you planning to shoot from?

Re: High goal shooters, where are you shooting from?
 

Driving on to the ramp of the castle and shooting straight up seems to be your best bet. Defensive robots can't really disrupt your accuracy and you're going to be shooting from the same spot every time. This is what we are doing.

Re: High goal shooters, where are you shooting from?
 

Anywhere we get a clean shot

Re: High goal shooters, where are you shooting from?
 

Our team is shooting from the batter since we believe that having a solid position shooting position to shoot from will be just as important (if not more) as in 2014. Being able to only control one ball; accuracy is gonna have to be key, and I just don't see teams shooting from the outerworks on the uneven angles being consistant. even if they don't have to deal with defense.

Re: High goal shooters, where are you shooting from?
 

...From the hip. :cool:

Re: High goal shooters, where are you shooting from?
 

Anywhere from the batter to the outerworks.

Re: High goal shooters, where are you shooting from?
 

every high shot is a parabola...arc going up gets us the batter, arc going down gets us ten feet out.

Re: High goal shooters, where are you shooting from?
 

About the same here. We're planning for our long shot to be at a range where the bumpers are over the outer works (when we're being defended), and the short shot will be fairly close to the batter (higher percentage shot when the courtyard is clear).

Re: High goal shooters, where are you shooting from?
 

Hopefully outerworks corneryard and batter

Re: High goal shooters, where are you shooting from?
 

The batter and the outer works.

Re: High goal shooters, where are you shooting from?
 

I don't know, we're still working getting everything running. I'm guessing we will shoot from wherever we can make a shot into the high goal. And if it doesn't work out so well, we'll play the low goal instead.

Re: High goal shooters, where are you shooting from?
 

like this :)
https://www.youtube.com/watch?v=3RDTD9K0q1U

Re: High goal shooters, where are you shooting from?
 

Edit: Mikey found a good setup for our shooter this evening - VERY consistent from shot to shot, enough that we are confident that we can make this work. Bri is in beast mode working out targeting on a pi. Now we're just waiting on some pneumatic cylinders from Bimba** and a bit of programming from Tiffany to make it sing. We expect to bag Tigger* with a system that can be made to work with proper programming, and have our practice robot, Roo*, shooting 90%+ by Bayou, and to fine-tune Tigger's launcher on Thursday. The ball pickup still has some work to go, but I haven't felt this good about our situation during week 6 ever.


* Names Tigger and Roo seem to have taken hold. In addition to being close enough to the official T1G3R^5 name, Tigger's bottom is made (maid?) out of rubber (the lowermost skid plate is cut from a rubbermaid brute trash can purchased to prototype Veronica's Oscar costume last year), and his top is made out of springs (inverted from the song, but who's counting?). Roo was essentially Tigger's little brother for much of the Pooh series, so he's the practice robot.

** We've made a couple of stand-ins for a Bimba Flat-I cylinder out of dimensional lumber, dowels, and PVC which has been invaluable for getting the configuration working. There's more information in those 2-D drawings than most people realize. This is a really good thing, because we probably won't get the cylinders in hand before bag day.

Re: High goal shooters, where are you shooting from?
 

Is your bot planning to go under the low bar? Those "antennas" (lack of a better word) might stick out beyond the 15 inches of the frame perimeter when they're bending to go under the low bar.

Re: High goal shooters, where are you shooting from?
 

Actually know 2502 personally, they aren't going low bar. The antennas are used to help see where the robot is positioned behind defenses. They are about 20" without a climber.

They have been able to do 6-8 cycles a match going over the moat for every cycle.

Re: High goal shooters, where are you shooting from?
 

The antennas are currently above the perimeter, by a bit, and they are not going to be as they are on the robot currently. We will get them underneath the regulations and everything with the actual, but those were plexiglass rods duct taped on......

We are not currently doing low bar, but we are looking into ways to do it post week one competition (Northern Lights)

Re: High goal shooters, where are you shooting from?
 

It appears that they're going outside 15" going over the defenses as well.

Re: High goal shooters, where are you shooting from?
 

Good Luck at Northern Lights. I guess we can check this out in person across the black curtain.
6-8 cycles is pretty good.:)

Re: High goal shooters, where are you shooting from?
 

Okay, I was just curious. Great robot by the way!

Re: High goal shooters, where are you shooting from?
 

About 10ft out to the edge of the courtyard, as long as we are positioned correctly.

Re: High goal shooters, where are you shooting from?
 

Straight shot from anywhere (in the courtyard).

Re: High goal shooters, where are you shooting from?
 

We're going for the straight shot from the outerworks, where we can't be hit. We are worried about being blocked by a tall defender, but I'm confident if we move quickly, we can get a shot off before a defender can position. If we can't get the shot off, we can shoot low from a pretty wide area.

Re: High goal shooters, where are you shooting from?
 

Great looking robot. I fear your arm may be subject to a lot of punishment when you are shooting though.

Re: High goal shooters, where are you shooting from?
 

We used HOT/Ether's ballistics spreadsheet in 2014 and found a really nice sweet spot for an arc given an exit velocity. Reality was pretty close to the simulation that year, so we used the spreadsheets again this year. For 2016 we need two different configurations (each of tilt/speed) to hit the entire range we want. The good news is that vision doesn't have to care about distance so much as left/right aim.

If you ever want to see a programmer's face go from stressed/contorted to totally relaxed in under a second then tell the programmer that the acceptable margin of error for range finding is +/- 10% (about 2 feet).

There's always the possibility of the magical, once-in-a-season shot from the low bar. If the cycles work out such that it's faster to pass the ball to a robot which stays in the courtyard then who knows - this may be the only place to shoot from.

Re: High goal shooters, where are you shooting from?
 

I noticed that also.....Have to "watch your back."

Re: High goal shooters, where are you shooting from?
 

The 6-8 cycles are under ideal conditions with no defense played on us. We are hoping we can do between 5-7 week one, but we will have to wait and see. The strategy didn’t involve the low bar because we felt that the huge design constraint caused by the low bar wasn’t outweighed by the decreased cycle time for most FRC teams. We wanted to invest all our “robot points” into cycling instead of trying to do everything and being a master of none. The team is currently in the process of beefing up the active intake. Our goal is for it to continue to function after 1816 (*cough* Peter *cough*) rams into it at full speed. They are also working on an active mechanism for keeping the ball center in the shooter to help our release time once we line up our shot. Thanks for the suggestions, and we wish everyone luck.