Thread: light up buttons
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Unread 11-02-2007, 20:44
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: 10,792
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Re: light up buttons
Dave,
This is a difference and not fuly documented since the OI manual you linked to, on page 7 "Notes:" states "[2] LED drivers provide 5V at 10mA". There are several other places in the manual where this is repeated. This is the criteria teams have used as far back as I can remember. If the LED outputs are indeed the raw input voltage, there will be times when the LEDs will extinguish due to low current. In the past we were told they were part of the 5 volt rail held up by the backup battery. I will pass this on to my software team.

Thanks,
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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.
Last edited by Al Skierkiewicz : 11-02-2007 at 20:55.