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Unread 28-01-2011, 11:26
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Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: Control of Decorations (Led displays)

Quote:
Originally Posted by DavidGitz View Post
<R42> Each power-regulating device (speed controller or relay module) shall control one and only one electrical load (motor, actuator or compressor).
Exception: Multiple low-load, pneumatic solenoid valves may be connected to a single relay module. This would allow one relay module to drive multiple pneumatic actions. No other electrical load can be connected to a relay module used in this manner.

From my understanding, a spike can control 2 circuits only if they are low-load, pneumatic solenoid valves. So you cannot control 2 different LED's (although I'm sure the current requirement is comparable).

If someone here disagrees, please let me know. Right now we have 3 relays for this purpose and I would not mind going down to 2!
David,
The multiple "low load" solenoid valves relate to the Crio solenoid/relay module. The Spike Relay module can control electrical loads up to 20 amps and can control multiple solenoids using the wiring suggested above.
See...http://content.vexrobotics.com/docs/...uide-sep05.pdf for a full description.
As long as you keep each LED string below 10 amps each and follow all other robot rules, you should have no problem.
Please be advised, bright LED strings, flashy decorations, or objects that mimic or emit light that can interfere with other robots using optical sensors may be viewed as objectionable under other FRC rules. Inspectors, refs or other officials may require you to disable them.
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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 : 28-01-2011 at 15:27.