Go to Post a robot that is broken shows that it has survived more than a robot that doesn't even have a scratch. - robot180 [more]
Home
Go Back   Chief Delphi > FIRST > Robot Showcase
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rating: Thread Rating: 5 votes, 5.00 average. Display Modes
  #46   Spotlight this post!  
Unread 24-02-2014, 17:48
holygrail's Avatar
holygrail holygrail is offline
Gavin Wood
FRC #1939 (The Kuhnigits)
Team Role: Coach
 
Join Date: Jan 2011
Rookie Year: 2007
Location: Kansas City, MO
Posts: 186
holygrail is just really niceholygrail is just really niceholygrail is just really niceholygrail is just really nice
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Does your pickup mechanism have to pick up and pass on the ground, or can you accept a pass directly from another robot by pulling the arm up and running the rollers in?

It appears there are a couple of bars on your shooter that stick up, but they seem to flex when the ball enters the robot in the video. Would those bars or the intake dimensions prevent you from taking a bumper to bumper pass?
  #47   Spotlight this post!  
Unread 24-02-2014, 18:09
JTN's Avatar
JTN JTN is offline
Registered User
AKA: John Taylor Novak
FRC #0016 (Bomb Squad)
Team Role: College Student
 
Join Date: Aug 2009
Rookie Year: 2002
Location: MIT
Posts: 82
JTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond repute
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by holygrail View Post
Does your pickup mechanism have to pick up and pass on the ground, or can you accept a pass directly from another robot by pulling the arm up and running the rollers in?

It appears there are a couple of bars on your shooter that stick up, but they seem to flex when the ball enters the robot in the video. Would those bars or the intake dimensions prevent you from taking a bumper to bumper pass?
We are able to actuate those bars (or "fingers" as we call them) with cylinders deep within the center of the robot to both shoot a truss shot and pass/receive out of the front of the robot with the pickup mechanism up. In the event of a catastrophic failure of the catapult (if it somehow happens), we are able to perfectly score one pointers in both the front and side of the low goal with ease.

-John Taylor Novak
__________________
They say I can't use a URL or BB code, so I'll use this for my signature.

Last edited by JTN : 24-02-2014 at 18:11. Reason: Added detail.
  #48   Spotlight this post!  
Unread 24-02-2014, 18:23
Jefferson Jefferson is offline
Registered User
AKA: Jeff Clements
FRC #0016 (Bomb Squad)
Team Role: Mentor
 
Join Date: Jan 2011
Rookie Year: 2010
Location: Mountain Home, AR
Posts: 258
Jefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond repute
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by holygrail View Post
Does your pickup mechanism have to pick up and pass on the ground, or can you accept a pass directly from another robot by pulling the arm up and running the rollers in?
If the ball is above the bumper, we shouldn't have an issue accepting it directly from another robot.

Quote:
Originally Posted by holygrail View Post
It appears there are a couple of bars on your shooter that stick up, but they seem to flex when the ball enters the robot in the video. Would those bars or the intake dimensions prevent you from taking a bumper to bumper pass?
Like JTN said, those "fingers" rotate down as the ball is pulled in, so they won't get in the way. The intake is narrower than the ball, so it would need some pushing from the passing robot and pulling in with our beater bar to make it work. The details probably lie in how well the robots mate up.
  #49   Spotlight this post!  
Unread 24-02-2014, 18:46
Jefferson Jefferson is offline
Registered User
AKA: Jeff Clements
FRC #0016 (Bomb Squad)
Team Role: Mentor
 
Join Date: Jan 2011
Rookie Year: 2010
Location: Mountain Home, AR
Posts: 258
Jefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond repute
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by Bryce2471 View Post
Could you provide some details about your swerve drive design? Such as wheel size, steering gearing, drive gearing, slip rings, or coaxial.
Our team did independent swerve drive for the first time this year.
Thanks in advance.
Not sure what language y'all use. If it's C++, feel free to steal from here:
https://github.com/FRCTeam16/Macys2014
We have several robots on that GitHub site, but this one is probably the cleanest for swerve drive code.
  #50   Spotlight this post!  
Unread 24-02-2014, 22:39
holygrail's Avatar
holygrail holygrail is offline
Gavin Wood
FRC #1939 (The Kuhnigits)
Team Role: Coach
 
Join Date: Jan 2011
Rookie Year: 2007
Location: Kansas City, MO
Posts: 186
holygrail is just really niceholygrail is just really niceholygrail is just really niceholygrail is just really nice
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by Jefferson View Post
If the ball is above the bumper, we shouldn't have an issue accepting it directly from another robot.



Like JTN said, those "fingers" rotate down as the ball is pulled in, so they won't get in the way. The intake is narrower than the ball, so it would need some pushing from the passing robot and pulling in with our beater bar to make it work. The details probably lie in how well the robots mate up.
Thanks. Good to know. I think there may be a pretty big benefit to not letting that ball hit the ground with the level of defense that may be present, particularly during elims. Hopefully, we'll get a chance to test it out next weekend. See you in Searcy!
  #51   Spotlight this post!  
Unread 03-03-2014, 05:44
Answer42's Avatar
Answer42 Answer42 is offline
Registered User
no team
Team Role: Mentor
 
Join Date: Nov 2013
Rookie Year: 2009
Location: Santa cruz
Posts: 110
Answer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud ofAnswer42 has much to be proud of
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by JTN View Post
Our swerve drive uses slip rings mounted at the top and we use 6" AndyMark performance wheels. I have some CAD models of our 2013 drive train if you'd like to see. Our output gear ratio is about 9.5:1 on the drive and for steering we use AM 9015s geared down using Versaplanetaries from VexPro (I'll have to figure out the gearing of that when I go to the shop later today). Here are some pictures of the model for a more visual approach. If you have any other questions, please don't hesitate to ask. Just send me a PM asking for the gear ratios for the steering and I'll try to get them to you as quickly as possible.



-John Taylor Novak
Could you talk more about the slip ring design? I was surprised to learn you guys were using that over a coaxial setup. What benefits does it give you? And how does it work?
__________________
My comments do not reflect the views of associated teams.
  #52   Spotlight this post!  
Unread 03-03-2014, 06:54
Jibri Wright's Avatar
Jibri Wright Jibri Wright is offline
Registered User
FRC #1781 (Electric Eagles)
Team Role: CAD
 
Join Date: Oct 2012
Rookie Year: 2011
Location: Chicago
Posts: 179
Jibri Wright will become famous soon enough
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by Answer42 View Post
Could you talk more about the slip ring design? I was surprised to learn you guys were using that over a coaxial setup. What benefits does it give you? And how does it work?
The slipring allows power to be given to the CIM while still allowing the wires to spin. So basically the module does spin like a coaxial module without all the space.
__________________
You know someone likes something when after doing it a million times, they still marvel at it as if it was the FIRST.

Greatness asks how can I make it better. Genius asks how can I make it different.
  #53   Spotlight this post!  
Unread 03-03-2014, 09:06
Jefferson Jefferson is offline
Registered User
AKA: Jeff Clements
FRC #0016 (Bomb Squad)
Team Role: Mentor
 
Join Date: Jan 2011
Rookie Year: 2010
Location: Mountain Home, AR
Posts: 258
Jefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond reputeJefferson has a reputation beyond repute
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by Jibri Wright View Post
The slipring allows power to be given to the CIM while still allowing the wires to spin. So basically the module does spin like a coaxial module without all the space.
And without the power losses associated with bevel gears.
  #54   Spotlight this post!  
Unread 09-03-2014, 20:48
JTN's Avatar
JTN JTN is offline
Registered User
AKA: John Taylor Novak
FRC #0016 (Bomb Squad)
Team Role: College Student
 
Join Date: Aug 2009
Rookie Year: 2002
Location: MIT
Posts: 82
JTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond repute
Re: Baxter Bomb Squad 2014 ~ Nighthawk

I didn't really want to start a new thread for one match video, but here is our 2014 robot in action this weekend! We still have some improvements to make before Queen City. (The balls were much more inflated than we expected at the competition, causing a bit of trouble in auto, but all should be worked out very soon)

http://youtu.be/F3zLJZjHv_s
__________________
They say I can't use a URL or BB code, so I'll use this for my signature.
  #55   Spotlight this post!  
Unread 09-03-2014, 20:55
hrench's Avatar
hrench hrench is offline
Mechanical build mentor
AKA: Bob Hrenchir
FRC #1108 (Panther Robotics)
Team Role: Mentor
 
Join Date: Jan 2012
Rookie Year: 2010
Location: Paola, KS
Posts: 220
hrench is a name known to allhrench is a name known to allhrench is a name known to allhrench is a name known to allhrench is a name known to allhrench is a name known to all
Re: Baxter Bomb Squad 2014 ~ Nighthawk

So that was fun to watch, but I can't figure out why the defenders never so much as bumped you while you shot? I would've thought they'd be clobbering you???
  #56   Spotlight this post!  
Unread 09-03-2014, 23:55
cxcad cxcad is offline
Registered User
FRC #1683 (Techno Titans)
Team Role: Alumni
 
Join Date: Mar 2014
Rookie Year: 2012
Location: Johns Creek
Posts: 132
cxcad will become famous soon enoughcxcad will become famous soon enough
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by JTN View Post
Our swerve drive uses slip rings mounted at the top and we use 6" AndyMark performance wheels. I have some CAD models of our 2013 drive train if you'd like to see. Our output gear ratio is about 9.5:1 on the drive and for steering we use AM 9015s geared down using Versaplanetaries from VexPro (I'll have to figure out the gearing of that when I go to the shop later today). Here are some pictures of the model for a more visual approach. If you have any other questions, please don't hesitate to ask. Just send me a PM asking for the gear ratios for the steering and I'll try to get them to you as quickly as possible.



-John Taylor Novak
I have been mesmerized by 16's swerve drive since 2012 when I first saw it. Can I take a look at the CAD, too?
  #57   Spotlight this post!  
Unread 23-03-2014, 22:38
tafipapi's Avatar
tafipapi tafipapi is offline
Registered User
FRC #4403
 
Join Date: Mar 2014
Location: Terreón, Coahuila México
Posts: 11
tafipapi is an unknown quantity at this point
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Is that the same model you guys used in Nighthawk? And where can I find it, is it in Andy Mark? Im a big fan of your work, greetings from team Roult 4403
  #58   Spotlight this post!  
Unread 23-03-2014, 22:42
Andrew Lawrence
 
Posts: n/a
Re: Baxter Bomb Squad 2014 ~ Nighthawk

Quote:
Originally Posted by tafipapi View Post
Is that the same model you guys used in Nighthawk? And where can I find it, is it in Andy Mark? Im a big fan of your work, greetings from team Roult 4403
Team 16 makes their own swerve modules, though some of the parts are COTS items available for purchase through FRC parts retailers.
  #59   Spotlight this post!  
Unread 24-03-2014, 00:01
JTN's Avatar
JTN JTN is offline
Registered User
AKA: John Taylor Novak
FRC #0016 (Bomb Squad)
Team Role: College Student
 
Join Date: Aug 2009
Rookie Year: 2002
Location: MIT
Posts: 82
JTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond reputeJTN has a reputation beyond repute
Re: Baxter Bomb Squad 2014 ~ Nighthawk

The model shown is our 2014 model. The CAD models for the 2014 season will be available following the World Championship upon request. Unfortunately, our swerve modules cannot be purchased from any vendor such as AndyMark as they were designed and manufactured by our team. They are the result of 8 years of development and much frustration. The part shown is only half of the equation however, as the modules must be programmed.

-John Taylor Novak
__________________
They say I can't use a URL or BB code, so I'll use this for my signature.
  #60   Spotlight this post!  
Unread 24-03-2014, 00:57
avanboekel's Avatar
avanboekel avanboekel is offline
Registered User
AKA: Adam Van Boekel
FRC #5934 (Gear it Forward, Crowbotics)
Team Role: Mentor
 
Join Date: Jan 2010
Rookie Year: 2010
Location: Oswego, IL
Posts: 372
avanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant futureavanboekel has a brilliant future
Quote:
Originally Posted by JTN View Post
The model shown is our 2014 model. The CAD models for the 2014 season will be available following the World Championship upon request. Unfortunately, our swerve modules cannot be purchased from any vendor such as AndyMark as they were designed and manufactured by our team. They are the result of 8 years of development and much frustration. The part shown is only half of the equation however, as the modules must be programmed.

-John Taylor Novak
Do you mind providing a picture/ explanation of the thrust bearing system?
__________________


2338 Gear It Forward | Student 2010-2013 | Mentor 2014-Present | oswegofirst.org
2013 Wisconsin Regional Winner (1732, 111, 2338)
2013 Midwest Regional Dean's List Finalist
2015 Midwest Regional Chairman's Award Winner
2015 Archimedes Subdivision Winner (1023, 2338, 3996, 1089)
2016 Midwest Regional Chairman's Award Winner
4096 CTRL-Z | Mentor 2014 | team4096.org
5934 Crowbotics | Mentor 2016-Present | crowbotics.org
Closed Thread


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 00:04.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi