View Single Post
  #20   Spotlight this post!  
Unread 27-11-2012, 11:48
CalTran's Avatar
CalTran CalTran is offline
MST Rolla Senior
FRC #2410 (BV CAPS Metal Mustang Robotics)
Team Role: College Student
 
Join Date: Apr 2010
Rookie Year: 2010
Location: Overland Park, Kansas
Posts: 2,435
CalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond repute
Re: [HELP] Digital Sidecar troubles

Quote:
Originally Posted by Al Skierkiewicz View Post
Scott,
Whine in these power supplies is normal although often very low in level.
Unfortunately, this whine happens to be an audible, high pitched whine.

Quote:
I have to ask what the LEDs on the DSC are doing. Are they all ON (qty 3) at the same brilliance? Does the RSL LED (the one on the DSC board next to the white RSL connector) flash when the robot is enabled? Is the 6 volt LED changing?
Battery light generally goes completely off, and the 5v light flickers or simply is on at a very low level. The 6v LED stays fairly strong throughout the operation. RSL LED flashes at it's normal speed, though occasionally doesn't turn on all together.

Quote:
This is usually metallic debris in the servo output connectors. Do you have any of the 6 volt jumpers installed on speed controller outputs? Do you have any relays connected? What do their LEDs look like?
We don't, or at least shouldn't, have any servo jumpers installed. I'll double check when I get to our facility today.

Quote:
If all of these appear normal, try removing all inputs and outputs from the DSC and then try installing them one at a time if the DSC appears normal with everything removed.
Will do.

Thank you, all of you, for your help. It is much appreciated.
__________________
Team 2410 thinks KISSing is amazing! Keep It Super Safe!
  • "You know you've been in robotics too long when you start talking to your tools." "Well, you've been in robotics CLEARLY too long when they start talking back"
  • Theory is when you know everything but nothing works. Practice is when everything works but you don't know why. On our team, theory and practice comes together - nothing works and nobody knows why.
MMR 2410 Student (2010 - 2013) | MMR 2410 Mentor (2013 - Present)
FTC Game Announcer / EmCee (2014 - Present) | FRC EmCee (2015 - Present) | FRC Referee (2016) | FTC Referee (2017)
Academic Student (Forever)