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1. Usage

The LEDs can be controlled with one of two interfaces. Using the built-in touchpad interface, each color from each of the two shades can be controlled individually, or in combination.

Figure 1.1

Control of the left and right shade is enabled using the green backlit buttons, where each button toggles the control of one shade. This also activates the back lighting of the touchpad.

Figure 1.2: Touchpad interface and lower part of the LED Lamp.

To change the brightness of a color, the finger is moved vertically over the touchpad. Brightness increases towards the top and decreases towards the bottom of the touchpad. To turn on all colors at the same brightness level, the finger is moved horizontally over the touchpad at the desired vertical position.

Figure 1.3: Changing the intensity of the light is as easy as sliding a finger across the touchpad interface. Virtual sliders are marked with colored LEDs.
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Figure 1.4
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Figure 1.5
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Figure 1.6
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Figure 1.7
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Figure 1.8
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Figure 1.9
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The second interface to the LED Lamp allows software to control individual clusters in each shade using a generic Ethernet controller. The Lamp is part of a standard Internet Protocol network as it plugs into a standard RJ45 network jack. The Lamp is configured with a unique IP address. Clusters of similarly colored LEDs can be controlled individually at discrete levels of brightness. The 252 LEDs in a shade are clustered in units of 6, resulting in 42 clusters: 8 for each of Red, Green, Blue, and Yellow, and 10 for White. Each cluster can be addressed individually at one of 23 different brightness levels.

Figure 1.10

For ease of communication, the command to control a cluster is composed of 4 characters denoting shade number, color, cluster number, and brightness value. Single commands include:

  • control of individual 6-LED clusters
  • control of all clusters for a given color
  • control of all LEDs in shade

The text-messaging interface can easily be implemented by any application.

Figure 1.11: Rear view of the LED Lamp's base. RJ45 ethernet jack/plug is pictured in rear and power jack/plug in front.
Three backlit buttons (two green and one red) at the base of the lamp control the source of input to the LED Lamp:
   
Power Off
   
Lighting control from Touchpad for left LED shade
   
Lighting control from Touchpad for right LED shade
   
Lighting control from Touchpad for both LED shades
   
Lighting control from Network