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Unread 02-02-2007, 10:56
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
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Re: Signal light trouble-shooting

Rich,
We haven't installed out relay yet so I am guessing on this. The installation in the Tips and Guidelines isn't clear on this but you need to provide a jumper between pin 1 and 4 for the LED to get a return line. The LED on the relay should light when the relay is getting a command. The relay is sensitive to polarity but I am guessing you have followed the schematic to the letter on color code. You should be able to get the light on the relay to turn on and off without having the big LED even connected. According to the RC manual, the Team Color outputs are circuit breaker protected internal to the RC It is possible that you have a defective circuit breaker. I would try to connect to last year's RC and see if you can get it to work. Using a voltmeter measure between pins 1 and 5 on the relay socket and you should see 5 volts when powered on. If not check carefully the pins on the team color connectors on the RC. If you have 5 volts between red and black then you have a bad PWM cable. Let me know what you find.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.