DIY LED fixture with 4 channel dimming
Back in 2012 i had to drain my last tank, as we were going to move to our new house.
This was a 325L saltwater tank, with a dimmable DIY light fixture. I had great success with this fixture, and did not miss the T5/HQi mix i had.
The fixture consisted of 48x3W leds, and had the same LUX output as 4x54W T5 and 2x250W HQi(!).
With four dimmable channels it was possible to balance the perceived light to my likings. I also loved the smooth transition from darkness to full light without scaring the fish.
As this worked so well back then, I will try this route once more, so here we go:
16xCREE XP-G3 coolwhite 6500K
16xCREE XP-G3 neutralwhite 5000K
16xCREE XP-G3 warmwhite 3000K
9x CREE XP-E photored (660nm) and 9x CREE XP-E2 red (620nm)
No lenses at the moment.
MeanWell LDD-H-4S driver board from RapidLED with LDD-1500H for whites and LDD-1000H for reds.
MakersLED 48" aluminium heat sink with T-slots.
Typhon reef, 4 channel, 5 and 10V PWM-dimming, DIY Arduino controller.
The build was very straight forward because of the T-slots in the heatsink. No drilling and tapping needed.
The BIG pain was cleaning up the code on the controller. This was written in Arduino 0022 back in 2010, and I could not find the correct libraries any more. This meant I had to rewrite large parts of the code, which for me was a HUGE challenge, as I am quite a noob on coding.
After tens of hours with Arduino, it is finally working!!!
I am very eager to see how the light will look like, and if I can grow plants with this LED combination.
Now I just have to wait for the replacement for the tank to arrive, as the first one arrived with a chipped corner.
Maybe I should use the time wisely and build an enclosure for the electronics?