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Unread 05-02-2006, 14:49
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: Using 7.2v charger as BackupBattery

Quote:
Originally Posted by Rick TYler
The CMUCAM2 spec sheet says it will run on 6 to 15VDC. Why not use the 12V main power on the 'bot? The camera is not much drain on the big battery, and then the backup battery can go back to its life of neglect and apathy.
Rick,
The IFI website lists the camera power as "7.2 VDC nominal @ 235mA. 5.2V - 8.6V range max, up to 20 V if internal servo jumper removed." A blanket statement that the camera can run on 12 volts is not entirely true. If you are depending on your camera to help in competition, know that it will fail if the power falls below the range stated. Robot main power for many teams will regularly drop below 5 volts during high current demands and the 7.2 volt backup supply is not tied to the main power. Want to keep the camera operating, use the recommended connections to the backup battery.
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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.