So, More research/puttering done.
I'm thinking between 5 and 8 Cree XP-G Neutral White LED
's, because then I can stick with One Dimmable ballast, and keep this project on the cheap.
Potential Parts List:
Dimmer/Constant Current Driver: $34
Mean Well ELN-60-27D dimmable driver - Rapid LED
5-8 Cree XR-E Neutral White LED
' with 40 degree Optics $6 Each
CREE XP-G Neutral White LED with 40°, 60°, or 80° degree Lens - Rapid LED
9 Volt Wall Wort for Diming:
(I have this laying around from electronic gizmo's that have gone the way of old yeller)
A potentiometer for Dimming the 9 Volt signal:
(This, I'm not sure of. What kind of load? I'm assuming because its just a "signal" that it doesn't have to be beefy. Also, I can't seem to see any Voltage rating on Pots. Does that mean it just goes by Resistance? I would think that if you put 230 volts through a small one, it'd just pop. Anyway, the decisions I HAVE made for this are Single Turn, and Linear curve.
Optics: 40 Degree. Below are pictures of various senarios. I don't have a cad program, so I used Photoshop with the following ratio: 10 pixels per Inch. The Aqua square is the floorprint of my Fishtank, 480 pixels by 180 pixels The grey circles are 156 pixels wide, which is what the flood would be with 40 degree Optics at 22 inches off the substrate.
Which light pattern do you suggest?
Anyone have any advice so far?
If this goes right, I could have an LED
fixture in place for about 100 bucks!