Go to Post The robotics, strategics, and technology make up the higher wavelengths, the adrenaline of competition the midband, and the low frequencies that pull at the heart, well that's the people. - John Wanninger [more]
Home
Go Back   Chief Delphi > FIRST > General Forum
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #8   Spotlight this post!  
Unread 20-03-2007, 22:14
meatmanek meatmanek is offline
Programmer/physicist/mathematician
FRC #0868 (TechHounds)
Team Role: Programmer
 
Join Date: Mar 2004
Rookie Year: 2004
Location: Carmel, Indiana
Posts: 142
meatmanek is a splendid one to beholdmeatmanek is a splendid one to beholdmeatmanek is a splendid one to beholdmeatmanek is a splendid one to beholdmeatmanek is a splendid one to beholdmeatmanek is a splendid one to beholdmeatmanek is a splendid one to behold
Re: why sooo many bad robots in 07

Quote:
Originally Posted by Joel J. View Post
I haven't seen alot of bad robots that were bad because they tried to do everything, though I do not deny their existence. I've seen alot of bad robots because of a poor gripper, or a poor drivetrain. Usually, it has been a poor gripper. By poor gripper I mean slow grab, poor hold, slow release, awkward release onto the rack, holding the tube vertically or worse, etc. Also, there are a few that attempted to be ramps only, but failed, or ended with sub-par ramps.
Don't be dissing on the vertical tube handling, man. As soon as there's video of 868's robot online, I'll show you how much vertical tube handling rocks.

But yeah, I'll agree that I've seen a lot of terribly inefficient grabbers. Seems like it takes most robots 10-15 seconds to pick up a tube.
Grabber mistakes I've seen:
2 flat, parallel pincers - The tube flies out when you turn
Grab from the top - You have to aim in 2 directions now
Nothing on the robot to help align the tube - makes the driver aim more
No positional control on the arm (Potentiometers are cheap, people.) - Makes the operator's job incredibly difficult
Lack of tube sensors - Makes the driver react, rather than the robot.

A few sensors and a bit of programming goes a long way. It also helps quite a bit if you plan ahead and design so that sensors are possible.
__________________
Real programmers use vim.
Reply With Quote
 


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
Why is it that not many girls are into robotics? busterblade16 General Forum 115 23-04-2009 21:17
Elevator robots why didn't you.. Collmandoman General Forum 19 02-04-2005 17:17
When good robots go bad... Madison Robot Showcase 7 20-03-2004 19:55
Team 116 - When good robots go bad... dlavery Robot Showcase 5 23-02-2004 01:32
How many robots? archiver 1999 1 23-06-2002 21:54


All times are GMT -5. The time now is 08:54.

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