DIY LED lighting

BarraCuda™ · 20-04-2008, 10:16 PM

It has been very long since I did any DIY projects. Now for my DIY Aquarium lighting experiment, some Luxeon V and CREE XR-E. They are meant to replace my 2x250W MH. Is it possible? I dont know yet, thats why I started this experiment.

I ordered 8pcs of the Luxeon V, 5W royal blues, 450nm. Each Luxeon V is actually 4 leds in one package, if you look closely you will be able to find 4 dies inside the lens

Modified array of 12pcs of CREE XR-E 1.25W 5000K

BarraCuda™ · 21-04-2008, 01:18 AM

Note that the Luxeon royal blue peaks at 450nm useful for photosynthesis but no glow for corals

. Actinic peaks at 420nm, shorter wavelength for glow but not available for photosynthesis

BarraCuda™ · 21-04-2008, 01:19 AM

Spectrum chart for the CREE XR-E, 5000K was chosen because of the increased yellow/red spectrum needed for photosynthesis. However I tried keeping some purple acros under pure 15watts of CREE XR-E 5000K and failed, the acros bleached and recede slowly over 3 weeks.

I have now increased to 40watts of royal blue and 15watts of white, only 1 side of the tank is lit due to the costs of luxeons USD$23+ each!

BarraCuda™ · 22-04-2008, 11:32 PM

These 8 pieces of Luxeon V are driven by 2 of these tiny Luxdrive LED Drivers at 700mA

BarraCuda™ · 27-04-2008, 12:00 AM

The LEDs are connected to a 4'x1' 3mm aluminum sheet as a heat sink. Effectively, only half of the aluminum is heated. The other side is room temperature.

I have taken temperature readings directly on the heat sink above the LEDs, its around 43-47C, well below the thermal design requirements

BarraCuda™ · 05-05-2008, 10:28 PM

Received more Luxeon K2, still waiting for the CREE XR-E Q5s and 410nm actinic LEDs

. These K2 will be driven at 1000mA or 1500mA once the 1500mA drivers are available.

stash · 19-05-2008, 12:33 AM

hi boss, keep up posted on the cost and results... looks very intresting... keen to get a set from u....

BarraCuda™ · 19-05-2008, 11:30 AM

Quote:

Originally Posted by stash

hi boss, keep up posted on the cost and results... looks very intresting... keen to get a set from u....

I dont sell them, the workmanship is not sellable anyway

I just burned a 100watts powersupply yesterday when I'm only loading it with 70watts... more $$ down the drain

BarraCuda™ · 23-05-2008, 12:09 AM

Homemade ....

01-06-2008, 12:59 AM

waiting for updates on your led lighting. anything so far?

20-04-2008, 10:16 PM	#1
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	DIY LED lighting It has been very long since I did any DIY projects. Now for my DIY Aquarium lighting experiment, some Luxeon V and CREE XR-E. They are meant to replace my 2x250W MH. Is it possible? I dont know yet, thats why I started this experiment. I ordered 8pcs of the Luxeon V, 5W royal blues, 450nm. Each Luxeon V is actually 4 leds in one package, if you look closely you will be able to find 4 dies inside the lens Modified array of 12pcs of CREE XR-E 1.25W 5000K

21-04-2008, 01:18 AM	#2
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Note that the Luxeon royal blue peaks at 450nm useful for photosynthesis but no glow for corals . Actinic peaks at 420nm, shorter wavelength for glow but not available for photosynthesis

21-04-2008, 01:19 AM	#3
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Spectrum chart for the CREE XR-E, 5000K was chosen because of the increased yellow/red spectrum needed for photosynthesis. However I tried keeping some purple acros under pure 15watts of CREE XR-E 5000K and failed, the acros bleached and recede slowly over 3 weeks. I have now increased to 40watts of royal blue and 15watts of white, only 1 side of the tank is lit due to the costs of luxeons USD$23+ each!

22-04-2008, 11:32 PM	#4
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	These 8 pieces of Luxeon V are driven by 2 of these tiny Luxdrive LED Drivers at 700mA

27-04-2008, 12:00 AM	#5
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	The LEDs are connected to a 4'x1' 3mm aluminum sheet as a heat sink. Effectively, only half of the aluminum is heated. The other side is room temperature. I have taken temperature readings directly on the heat sink above the LEDs, its around 43-47C, well below the thermal design requirements

05-05-2008, 10:28 PM	#6
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Received more Luxeon K2, still waiting for the CREE XR-E Q5s and 410nm actinic LEDs . These K2 will be driven at 1000mA or 1500mA once the 1500mA drivers are available.

19-05-2008, 12:33 AM	#7
stash New Member Join Date: Jul 2006 Posts: 35	hi boss, keep up posted on the cost and results... looks very intresting... keen to get a set from u....

23-05-2008, 12:09 AM	#9
BarraCuda™ SiaoGu Gives You Wings Join Date: Jul 2001 Posts: 4,169	Homemade ....

01-06-2008, 12:59 AM	#10
D!Concept Guest Posts: n/a	waiting for updates on your led lighting. anything so far?

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