Hex Products:RGB Hex

Design 1 – 4 × 5 RGB ArraysDesign 2 – 1 × 36 RGB Arrays20 – NorLux HEX LED 90 Die, RGB Array, Part Number N9100-0005
4 – 14" × 18" × 3/4" aluminum blocks
4 – alloy heat sinks, approximately 5" × 3" base
2 – 12 VDC, 25 A Regulated Switching Power supply
6 – 3" (80 mm) 12 VDC fan
12 – 1 K ohm potentiometer
12 – LM317 voltage regulator with matching heat sink
12 – SPST switch
4 – 5-input RJ11 coupler on single telephone cable
12 – RJ11 connector
1 – large plastic project box
2 – terminal bus, 1 ea per power supply
2 – 110 VAC standard 24 h timer
12 – 1.0 μF capacitor
12 – 0.1 μF capacitor
12 – 1 Ω power resistor
12 – 1 K Ω resistor
1 – blank circuit board


Each Tunable RGB Bank consists of five RGB HEX arrays affixed to a 12.5 mm solid aluminum support (Figure 2B

and 2C

). To allow for modular removal, replacement or service of individual HEX units, the four HEX array connection wires (1 each, RGB anodes and ground) were attached to a standard RJ11 telephone connector. The output of the CU terminates in a 5-input RJ11 coupler where all five HEX arrays could be easily, yet reversibly interfaced.
Thermal issues must be considered in construction of the light source. The LEDs have a maximum temperature rating of 110°C. To maintain full operation without heat damage to components, the NorLux HEX arrays required mounting to a substrate capable of efficient heat transfer and dissipation. In this design, HEX arrays were affixed to solid 18 mm aluminum blocks with heat-sink compound and metal screws (Figure 2B

). A black-anodized alloy heat sink was attached to the aluminum block and an 80 mm fan was installed over each unit (Figure 2C

). With this configuration the aluminum block temperature did not exceed 45°C. A low operating temperature not only assures consistent LED output, but also is important as radiant heat may perturb plant growth and/or development.
The modular design of the four Tunable LED Banks permits the capacity to control the quantity and quality of actinic light in plant experiments (Figure 3A

). In this arrangement up to nine 2.5" (6.35 cm) pots containing rosette plants such as Arabidopsis may be grown under a fluence rate of 75 μmoles m-2 s-1 (+/- 5 μmoles m-2 s-1) at 15 cm vertically below from the light fixture (Figure 3B

). Alternatively, seedling hypocotyl growth experiments on Petri dishes may be performed at much closer proximity (5 to 7 cm) where a uniform fluence rate of over 100 μmoles m-2 s-1 is readily obtained.


From- Design and fabrication of adjustable red-green-blue LED light arrays for plant research

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I am on this site because pot smokers are some of the most innovative people I know. I am an avid gardener, and am always looking for ways to improve my harvest of lettuce, cayenne peppers, basil, and chives.


---->You're braking the law if you don't pay taxes on your drugs...

good stuff!

Wow, my first sticky! I thought it might be useful.

__________________
I am on this site because pot smokers are some of the most innovative people I know. I am an avid gardener, and am always looking for ways to improve my harvest of lettuce, cayenne peppers, basil, and chives.


---->You're braking the law if you don't pay taxes on your drugs...

just a little meesy in presentation, but yeh.