TS-7180 LEDs

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There are four LEDS on the TS-7180 that may be controlled by the user, through the sysfs interface. These are colored yellow, green, red, and blue.

To turn an LED on, write a 1 to 'brightness'. To turn it off again, write a 0. 

# Example:  Turn on the Blue LED...
echo 1 > /sys/class/leds/blue-led/brightness

# Turn it off again...
echo 0 > /sys/class/leds/blue-led/brightness
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