View Single Post
  #25   Spotlight this post!  
Unread 25-03-2011, 20:58
The Lucas's Avatar
The Lucas The Lucas is offline
CaMOElot, it is a silly place
AKA: My First Name is really "The" (or Brian)
FRC #0365 (The Miracle Workerz); FRC#1495 (AGR); FRC#4342 (Demon)
Team Role: Mentor
 
Join Date: Mar 2002
Rookie Year: 2001
Location: Dela-Where?
Posts: 1,564
The Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond reputeThe Lucas has a reputation beyond repute
Send a message via AIM to The Lucas
Re: cRio Constantly Rebooting

Quote:
Originally Posted by Jared341 View Post
* We did notice that with our practice robot up on blocks (wheels off the ground), slamming the stick from full forward to full reverse did cause a (predictable) brief but severe drop in battery voltage. Other than simply asking too much from our battery, though, we're almost out of theories.
Let me preface this by saying I don't see what I am about to suggest as a long term solution, more a quick fix/diagnostic. I suggest you put in a voltage ramp (a la Lunacy) in your code for the drive train. See how that impacts your voltage drop and potential for reboots. If it eliminates your reboots, you will know that you are asking a bit much of the battery . Then you can make the tough decisions related to reducing your usage.
Also, does your roller claw have some sort of clutch (or torque limiter) mechanism to prevent you from stalling out your RS775?

I also agree that it looks like a cRIO reboot was plaguing 2056 today, it would be interesting to hear their story since they didn't seem to have issue at FLR.

This is a game has the potential for more frequent high current bursts than any other we have seen with this control system. Lunacy tended toward a moderate to low constant draw. Breakaway had bursts for climbing, kicking and pushing matches, but for the most part was low.
__________________
Electrical & Programming Mentor ---Team #365 "The Miracle Workerz"
Programming Mentor ---Team #4342 "Demon Robotics"
Founding Mentor --- Team #1495 Avon Grove High School
2007 CMP Chairman's Award - Thanks to all MOE members (and others) past and present who made it a reality.
Robot Inspector
"I don't think I'm ever more ''aware'' than I am right after I burn my thumb with a soldering iron"

Last edited by The Lucas : 25-03-2011 at 21:07.
Reply With Quote