OCCRA
Go to Post STEM: Science, Trial, Error, Math. - hrench [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 01-29-2002, 11:30 PM
FotoPlasma FotoPlasma is offline
\: |
no team
 
Join Date: Jul 2001
Rookie Year: 2001
Location: San Jose
Posts: 1,900
FotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond repute
Send a message via AIM to FotoPlasma
Have YOU used the gyro chip?

I'm fairly curious as to what people have done/plan to do with their gyro chips.

Any information about tried-and-true methods of using them for anything would be nice.

More specifically, we're thinking of using one to keep track of absolute direction (trivial mathematical tweaking aside), but I find the chip itself to be rather volatile for making accurate readings, especially when a robot can turn at more than 64degrees/sec (which is the point at which the gyro maxes out)...

Umm... Well... Besides trying not to sound like a complete n00b, I'm not sure what to do with it (the gyro)...
It seems like a waste to get a >$100 piece of equipment every year, and not to use it...
__________________
I played hacky sack with Andy Baker.

2001-2004: Team 258, The Sea Dawgs
2005: Team 1693, The Robo Lobos
  #2   Spotlight this post!  
Unread 01-30-2002, 02:11 AM
s_alaniz s_alaniz is offline
Registered User
#0057 (Leopards)
 
Join Date: Jun 2001
Location: Houston, Tx
Posts: 73
s_alaniz is an unknown quantity at this point
Gyro?

The Gyrochip? THIS year... we're using it as a doorstop... Well... ok I wanted to use it for a mouse like control system, but that scheme proved to be too ambitious.

Best Wishes


Steve Alaniz

"What good is technology if you can't abuse it?" - Ted Forth
  #3   Spotlight this post!  
Unread 01-30-2002, 04:30 PM
team222badbrad's Avatar
team222badbrad team222badbrad is offline
3D Printing Specialist
AKA: Bradley Rigdon
FRC #0222 (The Tigertrons)
Team Role: Mentor
 
Join Date: Sep 2001
Rookie Year: 2000
Location: Tunkhannock, PA
Posts: 1,091
team222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond repute
Send a message via AIM to team222badbrad
hahahaha

They sit in our storage closet. In there they collect dust. I think we now have like 4.

I asked my advisor the one day if i could take one apart so that i wasnt bored. *** It was before kickoff!!
__________________
Tigertrons are on Facebook!

http://www.printo3d.com

16th FIRST season for me.
  #4   Spotlight this post!  
Unread 01-30-2002, 10:06 PM
Joe Johnson's Avatar Unsung FIRST Hero
Joe Johnson Joe Johnson is offline
Engineer at Medrobotics
AKA: Dr. Joe
FRC #0088 (TJ2)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1996
Location: Raynham, MA
Posts: 2,792
Joe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond reputeJoe Johnson has a reputation beyond repute
Interested in trading?

What will you take for them?

One can never have enough yaw rate sensors.

Joe J.
  #5   Spotlight this post!  
Unread 01-30-2002, 10:39 PM
Unsung FIRST Hero
Patrick Wang Patrick Wang is offline
Registered User
#0115 (MVRT Alumni)
 
Join Date: Oct 2001
Location: Cupertino, CA
Posts: 128
Patrick Wang has a spectacular aura aboutPatrick Wang has a spectacular aura about
Send a message via AIM to Patrick Wang
One Strafe Drive System :P

I'll gladly trade our gyrochip for one Dr. joe patented FIRST robot strafe drive
__________________
Patrick Wang

WRRF
  #6   Spotlight this post!  
Unread 01-30-2002, 11:27 PM
team222badbrad's Avatar
team222badbrad team222badbrad is offline
3D Printing Specialist
AKA: Bradley Rigdon
FRC #0222 (The Tigertrons)
Team Role: Mentor
 
Join Date: Sep 2001
Rookie Year: 2000
Location: Tunkhannock, PA
Posts: 1,091
team222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond repute
Send a message via AIM to team222badbrad
Dont know???

LOL yeah I will take that lol. I dont know if we can sell them or not I will have to ask lol.

email me: if you want Dr. Joe at team222badbrad@yahoo.com
__________________
Tigertrons are on Facebook!

http://www.printo3d.com

16th FIRST season for me.
  #7   Spotlight this post!  
Unread 01-30-2002, 11:29 PM
team222badbrad's Avatar
team222badbrad team222badbrad is offline
3D Printing Specialist
AKA: Bradley Rigdon
FRC #0222 (The Tigertrons)
Team Role: Mentor
 
Join Date: Sep 2001
Rookie Year: 2000
Location: Tunkhannock, PA
Posts: 1,091
team222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond reputeteam222badbrad has a reputation beyond repute
Send a message via AIM to team222badbrad
Wink lol

I mean trade!!!! not sell hehe.
__________________
Tigertrons are on Facebook!

http://www.printo3d.com

16th FIRST season for me.
  #8   Spotlight this post!  
Unread 01-31-2002, 11:30 AM
FotoPlasma FotoPlasma is offline
\: |
no team
 
Join Date: Jul 2001
Rookie Year: 2001
Location: San Jose
Posts: 1,900
FotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond reputeFotoPlasma has a reputation beyond repute
Send a message via AIM to FotoPlasma
I'd heard that some teams have actually used them on their robotics in past seasons, including GRT (192) a couple seasons ago (for keeping a ball-carrier upright, if I recall correctly).

I was wondering if anyone could give a little more information about either their own team, or someone else, who's used this doohicky (it's a technical term ) for anything.
__________________
I played hacky sack with Andy Baker.

2001-2004: Team 258, The Sea Dawgs
2005: Team 1693, The Robo Lobos
  #9   Spotlight this post!  
Unread 01-31-2002, 01:00 PM
kmcclary's Avatar
kmcclary kmcclary is offline
Founder:7 teams;Mentor:66/470/more
FRC #0470 (Grizzly Robotics)
Team Role: Engineer
 
Join Date: Aug 2001
Rookie Year: 1994
Location: Ann Arbor, MI
Posts: 495
kmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond reputekmcclary has a reputation beyond repute
Patrick Wang wrote:
> I'll gladly trade our gyrochip for one
> Dr. joe patented FIRST robot strafe drive

What's a "strafe drive"?

BTW... We're your typically underfinanced rookie team, so we don't have spares of ANYTHING yet. When we're done, we'd be more than happy to horse trade unused stuff for spares. We're *especially* interested in spare power electronics and motors.

Once that is done, we might be interested in talking about swapping some of the rest of our surplus for people's piles of more exotic things like the gyrochips. IMHO, it would be great to concentrate enough copies here of any one thing established teams always seem to have too many of. That would allow us to create entire class experiments to help our robotics students gain experience in these parts.

Whatcha all need, and what do you have PILES of from previous years?

- Keith
--
Keith McClary, Advisor Huron High Rat Pack Team 830
__________________
Keith McClary - Organizer/Mentor/Sponsor, Ann Arbor MI area FIRST teams
ACTI - Automation Computer Technologies, Inc; Sponsoring FIRST teams since 2001!
MI Robot Club / GO-Tech Maker's Club / RepRap-Michigan / SEMICNC Club
"Certifiably Insane": Started SEVEN FRC teams & many robot clubs (so far)!
2002: 830 Rat Pack | 2003-5;14: 1015;1076 Pi Hi Samurai | 2005-6: 1549 Washtenuts/FireTraxx
2005-..: 1502 Technical Difficulties | 2006-..: FIRST Volunteer!
2009-..: 470 AlphaOmega/Grizzlies | WAFL | Sponsor & Floating Engineer for MI Dist 13 (Washtenaw Cnty)
2011: 3638 Tigertrons | 2013-..: 4395 ViBots | 2014-.. 66 Grizzlies | 2016: 6190 Will Er Run | 2017-.. 6101 Strange Quarks
Home Teams: 66 & 470 Grizzly Robotics
Local FIRST alumni @ or coming to Ann Arbor (UM/EMU/WCC/Cleary)? We Want YOU as a Mentor! Please email me for info!
Support CDF Reputation: If a post helped, thank 'em with rep points!
"It must be FRC build season when UR spouse & children become 'Action Items 8 & 9'..."
  #10   Spotlight this post!  
Unread 01-31-2002, 01:07 PM
Wetzel's Avatar
Wetzel Wetzel is offline
DC Robotics
FRC #2914 (Tiger Pride)
Team Role: Mentor
 
Join Date: Sep 2001
Rookie Year: 1999
Location: DC
Posts: 3,522
Wetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond reputeWetzel has a reputation beyond repute
Send a message via AIM to Wetzel
We tried to use the gryo last year to have an 'auto-balance buton' to balance of the ramp. The buton worked, but then the robot did this really funny dance where it threw itself back and forth fairly violently. We never got the code to work quite right...

We have piles of drill moters. In the fall before kickoff, we do a simplified compition, making little robots out of plywood to move a soda can thruogh a maze and hand it off to another to do the course again, or something similar.
But then again we keep letting the magic smoke out...
__________________
Viva Olancho!
  #11   Spotlight this post!  
Unread 01-31-2002, 01:26 PM
NightVisionGuy NightVisionGuy is offline
Registered User
#0614 (Hawk Two)
 
Join Date: Jan 2002
Location: Alexandria, VA
Posts: 4
NightVisionGuy is an unknown quantity at this point
Cool Yes, we used the gyro (last year)

The team we supported last year, #614, did use the gyro last year to help the robot drive straight and true. Drill motors were used to drive the robot, and they were mounted in an opposing orientation (ie, one motor would run fwd, other had to run rev, to move the 'bot forward, etc). Discovered that the motors did not have identical characteristics, etc. Used the gryos to sense the drift, left or right, and used this, banded and filtered a bit, as feedback into the motor control logic to help the robot drive straight. It wasn't perfect, but it did improve the straight-line performance.

I also remember one team that did, indeed, use it to help auto-balance on the bridge. I believe they used the gyro to sense when the bridge was moving down (after they had embarked up it), then used the optical sensors and reflectors to count wheel revs needed to move in the other direction to balance. Some previous experiments were obviously done to calibrate that part of it.

I'm sure other guys figured uses for it as well. This year, well, not sure if we'll use/need it yet or not.

HTH,

Night Vision Guy.
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Image Discuss: Gyro Chip Pin OUT CD47-Bot Extra Discussion 7 02-21-2003 07:09 PM
Help with the gyro chip Team852 Electrical 1 01-10-2003 10:31 PM
Gyro Chip Code archiver General Forum 4 06-24-2002 12:57 AM
Need a Gyro Chip archiver General Forum 0 06-23-2002 11:08 PM
Is any team using the gyro chip? Ragin_Kage Kit & Additional Hardware 4 04-10-2002 12:11 PM


All times are GMT -5. The time now is 10:22 AM.

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