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#51
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#52
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![]() Whoops, not sure what happened with that last post
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So just out of curiosity, in air, 18 inches away from the LEDs and no optics yet: 260 PAR. This is gonna be good ![]() |
#53
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![]() Tagging along!
Very interesting thread ![]()
__________________
My 265 gallon build! |
#54
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![]() For some added LED info, I just did some PAR readings in the iReef pico. it has 6 Cree XR-E LEDs being underdriven by a 350mA dimming buckpuck that I actually have turned down a little from full power. No optics are used, just bare emitters. PAR readings were about 170 near the top of my rock which is about 4 inches below the surface of the water and about 5 inches below the LEDs. Par drops to about 80 near the bottom of the tank about 10 inches below the water line.
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#55
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![]() just wait till you can crank it up and let it go it should be nice and bright under there.
Bill |
#56
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![]() A bit slow as I need to redo a few of the molex connectors and pick up a few little bits for assembly. But I did a quick test in air again with optics. At 18" with 60 degree optics the PAR jumps to about 375 vs 250 without optics.
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#57
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The max voltage for the Arduino is 9VDC. There is also an onboard voltage regulator which will regulate the voltage down to 5VDC for the electronics. May need the use of OP amps to drive the Meanwell LED driver. Vancouver Reefer (Canreef member) may have something since he's been down this path with his setup. I believe he used the LED Pucks which is similar to the Meanwell. There are also other threads on about LED lighting on some of the other aquarium forums. I've also been toying with the idea of using the Arduino as a platform for my aquarium controller - pH, temperature and lighting. Good luck! |
#58
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![]() The Arduino specs say 6 - 20 volts as the limits for input with 7 - 12 volts recommended. I have a 12V power supply that will feed the Arduino, three 12V fans and, with an LM317 voltage regulator, the 10V for the PWM signal to the Meanwells (via a transistor controlled by the PWM out of the Arduino) so that is all figured out. Just have to build that part
![]() I have followed many threads on LEDs on reef central and nano-reef and have built a basic array for my pico tank already (6 LEDs and one dimming buckpuck). The array itself is all wired and works fine without dimming right now. Now it's on to assembly in the housing and then building and programming the controller. |
#59
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![]() P.S. Big thanks to hillegom for the power supply. I owe you a frag or three when your new tank is up and running
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#60
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![]() Thanks Ron.
Will look forward to a frag or so. Nice to be able to help with that big project of yours. Surplus here for surplus there. |