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06/23/2018, 12:01 PM
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#1 |
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Registered Member
Join Date: Jan 2004
Location: AL
Posts: 1,539
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Pi for dimming Cree star LEDs: Check my build list? Also questions.
I want to build a DIY LED lamp for a high tech planted aquarium, and have it PWM controlled for dimming with the Pi. Eventually I want to control as much as I can with the Pi on the tank, but starting with the light.
I am copying the LED setup that the AI Prime uses: Prime Freshwater » AquaIllumination® but upgrading to cree G3 instead of G2. Is there any reason I should stick with G2, I see the G2 are "up to" 1.5amp and the G3 are "up to" 2 amp. For drivers, do I have the right ones selected? 1.5 and 1 amp high voltage. How big of a power supply will I need? Build list: https://i.imgur.com/WYEH6fI.png I also want to put a temperature sensor on the heatsink to turn on/off and speed up a fan on the heat sink. I read something about a SCW driver to control this, can anyone give me some info on how that works?
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_________________________ Current Tank Info: 90g Reef from 2004-2013. |
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06/23/2018, 02:38 PM
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#2 |
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Registered Member
Join Date: Jan 2004
Location: AL
Posts: 1,539
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_________________________ Current Tank Info: 90g Reef from 2004-2013. |
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06/24/2018, 04:39 PM
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#3 |
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Registered Member
Join Date: Apr 2013
Posts: 1,793
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24v 60W or better,, switching power supply...
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06/24/2018, 05:14 PM
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#4 |
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Registered Member
Join Date: Jan 2004
Location: AL
Posts: 1,539
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How many amps to drive the G3, E2, and E with?
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_________________________ Current Tank Info: 90g Reef from 2004-2013. |
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06/24/2018, 05:29 PM
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#5 | |
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Registered Member
Join Date: Sep 2003
Location: North Carolina
Posts: 20,050
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Quote:
You can drive the G3's at 2A max (1500mA LDDs would be fine). The E2/E are 1A max so 1000mA LDDs or 750mA would be fine..
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06/25/2018, 06:07 PM
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#6 | |
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Registered Member
Join Date: Jan 2004
Location: AL
Posts: 1,539
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Quote:
Also more of a FW question, but should I consider adding a cyan and/or a hyper violet in addition to the RGB LEDs I have? I have been looking at the spectrum for chlorophyll and it looks like a wide blue spectrum and wondering if they would help expand on that, or just be useless. Again, not a reef, FW planted.
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_________________________ Current Tank Info: 90g Reef from 2004-2013. |
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06/25/2018, 08:04 PM
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#7 |
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Registered Member
Join Date: Apr 2013
Posts: 1,793
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Do you have a twin?
http://www.plantedtank.net/forums/20...questions.html Not to discourage you here but there is more targeted info there... |
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06/26/2018, 05:58 PM
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#8 |
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Registered Member
Join Date: Jan 2004
Location: AL
Posts: 1,539
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You got me! Yeah, I used to frequent this site a bunch when I was reef keeping. I found reef central people seem to know what they are talking about on a much higher level than other sites. I asked on various planted communities and got a less of response and guidance than I was hoping for, many questions were unanswered. I hope that my chances of coming across someone here who has built a DIY light would be greater here.
So spectrum aside, the technical aspects of building a light are not that really different.
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_________________________ Current Tank Info: 90g Reef from 2004-2013. |
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06/26/2018, 11:38 PM
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#9 |
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Registered Member
Join Date: Apr 2013
Posts: 1,793
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Problem is most will ignore fw...
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