Go to Post Robot shoots forward across field and jams itself into opposing alliance bridge. It was, however, the fastest our robot ever went. - PandaHatMan [more]
Home
Go Back   Chief Delphi > Technical > Electrical
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
  #14   Spotlight this post!  
Unread 16-01-2012, 15:48
apalrd's Avatar
apalrd apalrd is offline
More Torque!
AKA: Andrew Palardy (Most people call me Palardy)
VRC #3333
Team Role: College Student
 
Join Date: Mar 2009
Rookie Year: 2009
Location: Auburn Hills, MI
Posts: 1,347
apalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond reputeapalrd has a reputation beyond repute
Re: Jaguar VS Victor

My opinions on the topic:

-The serial bridge is ~1/8th the speed of the 2can, yes (115,200baud serial vs 1M?) - That's fairly significant if you update the Jaguars fast enough

-We have yet to use a CAN jaguar, or have any features we cannot do with purely a Victor and some software on our end. We like it this way for some things, as we can modify the control loop to fit our robot (a PID loop isn't great for everything), or add multiple control loops and add the output (e.g. control to distance + control to heading over the two sides).

-We will never use a Jaguar in drivetrains because of their high-current shutdown. We had a lot of issues on our Lunacy bot post-season, because after 5 minutes of driving (with super low cof wheels, remember) the shooter could randomly (predictably after a few minutes) shut down due to the extended current draw of forward-reverse slams.

-I've heard the black jags are far more reliable than the grey ones. We are willing to use a black jag if it gives us an advantage, but we haven't found an advantage yet. They are functionally the same over PWM, but if you only use PWM control, the Jaguars are physically bigger and can't handle the extended high-current draw that the Victors can.

-In my time on 33, I've only seen 1 Victor die, ever. We have some of the really old Victor 883's which we still use for practice and mock up robots, and they still work after many years of use. The Jaguars don't yet have that kind of track record, especially after the really bad grey jags.
__________________
Kettering University - Computer Engineering
Kettering Motorsports
Williams International - Commercial Engines - Controls and Accessories
FRC 33 - The Killer Bees - 2009-2012 Student, 2013-2014 Advisor
VEX IQ 3333 - The Bumble Bees - 2014+ Mentor

"Sometimes, the elegant implementation is a function. Not a method. Not a class. Not a framework. Just a function." ~ John Carmack
 


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 23:49.

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