View Single Post
  #12   Spotlight this post!  
Unread 21-03-2010, 10:06
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,795
Al Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond reputeAl Skierkiewicz has a reputation beyond repute
Re: Fuse in cRIO is blown.

Mikets,
I have inspected several robots that thought they had insulated the Crio in wood only to find that the mounting screws went through the wood into the frame. The camera, KOP sensors and custom circuits are all sources of potential connection to chassis. When the chassis finds a short to a motor controller output, several volts will be developed across the the wire feeding power to the Crio. Shorts can come from pinched wires, shorted motor (internal short to case) and moving components. Robots that kick and quickly move over the bump (the Duke's of Hazard move as it was termed over the past weekend) cause things to move much more than you think.
__________________
Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
________________________
Storming the Tower since 1996.