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Unread 10-10-2007, 16:21
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RyanN
AKA: Ryan Nazaretian
FRC #4901 (Garnet Squadron)
Team Role: Mentor
 
Join Date: Jun 2006
Rookie Year: 2005
Location: Columbia, SC
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Re: Project Questions about Programming and Electrical

Quote:
Originally Posted by Al Skierkiewicz View Post
Ryan,
When linking to your schematic the connection is refused so I can't be sure of what you are doing.
As to the power relay, did you solder directly to the relay contacts? Often this melts the base material and leaves enough slop in the contact to move around with heat/cool and vibration. Add to this a few errant metal shavings or whiskers and you end up with a contact that you can't really see but is there none the less. The best way to use realys is to add a socket. The socket is made for soldering and the relay merely plugs into it. Relays are notorious for acting weird especially on low current signals.
I didn't solder it at all. I used female connections and it doesn't look melted at all. I think it may just be a defective connection. Here are the pictures I uploaded to facebook since my server doesn't want to cooperate:


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FRC 4901
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Previous mentor and student from Team Fusion, FRC 364