Gasturbineguy
Member
Hello all! Thought I’d kick off my DIY dense matrix LED build (knock off Kessil). It’s going to be built around a LedGroupBuy Lumia 5.1 chip, Reef version of course. See link below for info on that chip:
http://www.ledgroupbuy.com/lumia-5-1-100w-full-spectrum-5-channel-led/
Reefbuilders info on this LED: http://reefbuilders.com/2013/05/27/100w-lumia-51-multichip-led-diy-masses/
Optics will be a 50-80 degree adjustable unit from LGB as well. It’s priced well and similar to what you’d find on eBay:
http://www.ledgroupbuy.com/lumia-5-1-optic-lens/
I will be placing this over a shallow cube build in the next few months. Tank depth is only 11 inches so PPFD (PAR) is not as important as single point light source and spectral control/quality.
I’ll be mounting this LED chip to a Xoide NoFan CR-95C CPU heat sink. It looks really cool and the additional thermal capacity should help keep the LED safe:
http://www.xoxide.com/nofancr-95cicepipefanlesscpucooler-copper.html
There will be additional cooling for the heat sink via a Noctua NF-P14. It’s near silent and will likely run full speed since controlling it would be extra work that’s not required:
http://noctua.at/main.php?show=nf_p14_blade_design&lng=en
As recommended by LGB I’ll be driving each channel with Meanwell LDD-700H PCB mounted drivers using a Coralux driver board (LDD 6-up). See link below for info.
http://coralux.net/?wpsc-product=ldd-6-driver-board
System power will be from a 250W 48V, 5.2A DC power supply purchased from LGB for convenience:
http://www.ledgroupbuy.com/250w-48v-5-2a-dc-power-supply/
I’m still toying around with my control scheme for this. Contenders are PWM to 0-10V conversion and control via this:
http://shop.stevesleds.com/Aquarium-Controller-Interface-Harness-for-Steves-LEDs-Drivers-harness.htm
The hope would be I can feed the 0-10V from my PLC system for control.
Or, fitting a custom programmed Jarduino controller with LCD etc… See link for info:
https://code.google.com/p/jarduino-aquarium-controller/
I’m hesitant to go Arduino due to a lack of knowledge of programming the devices. They are incredibly simple hardware but the programming; well I have better things to do.
Heat sink temperature will be monitored by my PLC control system via PT100 RTD with a fail-safe thermal cut out switch that cuts out at 70C. This seems to be the highest temperature the manufacture of the chip recommends. If I get this photon cannon that hot with that heat sink/fan combo I’ll be shocked!
The RTDs are from a source on eBay and were originally purchased for monitoring water temperatures. They have a full Teflon tubing “jacket”. This was easily stripped to expose the metal RTD body.
Before:
After:
Note: all thermally important devices are being epoxied to the heat sink with a 2 part thermally conductive epoxy from Artic Silver.
That should cover the what. Now the why lol! I want to try varying spectrums and intensities throughout the day and gauge the impact on corals I keep. There are some newer LED panels that are really close to this but price and not being a single point design is a big “con” to me. I feel certain that a company like Kessil will eventually build a unit with this level of control. I’d buy one in a second!
So far I have the LED adhered to the heat sink and mounted the optics housing an hour later. Note: The optic housing has 4 little "nubs" on the back that are supposed to mesh in the LED plastic surround, they do not mesh well so I trimmed the nubs off and placed my RTV on this plastic surround. The housing rests flat and does not rock back and forth like before the modification. Should be a very secure adhesion once it sets.
The fan is secured via zip ties for easy removal if needed and I’m on hold for the Meanwell drivers and thermal cut out switch. I have expandable mesh cable sleeve for cable management and am still researching a housing design that will look good and be easy to fit.
I’ll update as the project progresses.
http://www.ledgroupbuy.com/lumia-5-1-100w-full-spectrum-5-channel-led/
Reefbuilders info on this LED: http://reefbuilders.com/2013/05/27/100w-lumia-51-multichip-led-diy-masses/
Optics will be a 50-80 degree adjustable unit from LGB as well. It’s priced well and similar to what you’d find on eBay:
http://www.ledgroupbuy.com/lumia-5-1-optic-lens/
I will be placing this over a shallow cube build in the next few months. Tank depth is only 11 inches so PPFD (PAR) is not as important as single point light source and spectral control/quality.
I’ll be mounting this LED chip to a Xoide NoFan CR-95C CPU heat sink. It looks really cool and the additional thermal capacity should help keep the LED safe:
http://www.xoxide.com/nofancr-95cicepipefanlesscpucooler-copper.html
There will be additional cooling for the heat sink via a Noctua NF-P14. It’s near silent and will likely run full speed since controlling it would be extra work that’s not required:
http://noctua.at/main.php?show=nf_p14_blade_design&lng=en
As recommended by LGB I’ll be driving each channel with Meanwell LDD-700H PCB mounted drivers using a Coralux driver board (LDD 6-up). See link below for info.
http://coralux.net/?wpsc-product=ldd-6-driver-board
System power will be from a 250W 48V, 5.2A DC power supply purchased from LGB for convenience:
http://www.ledgroupbuy.com/250w-48v-5-2a-dc-power-supply/
I’m still toying around with my control scheme for this. Contenders are PWM to 0-10V conversion and control via this:
http://shop.stevesleds.com/Aquarium-Controller-Interface-Harness-for-Steves-LEDs-Drivers-harness.htm
The hope would be I can feed the 0-10V from my PLC system for control.
Or, fitting a custom programmed Jarduino controller with LCD etc… See link for info:
https://code.google.com/p/jarduino-aquarium-controller/
I’m hesitant to go Arduino due to a lack of knowledge of programming the devices. They are incredibly simple hardware but the programming; well I have better things to do.
Heat sink temperature will be monitored by my PLC control system via PT100 RTD with a fail-safe thermal cut out switch that cuts out at 70C. This seems to be the highest temperature the manufacture of the chip recommends. If I get this photon cannon that hot with that heat sink/fan combo I’ll be shocked!
The RTDs are from a source on eBay and were originally purchased for monitoring water temperatures. They have a full Teflon tubing “jacket”. This was easily stripped to expose the metal RTD body.
Before:
After:
Note: all thermally important devices are being epoxied to the heat sink with a 2 part thermally conductive epoxy from Artic Silver.
That should cover the what. Now the why lol! I want to try varying spectrums and intensities throughout the day and gauge the impact on corals I keep. There are some newer LED panels that are really close to this but price and not being a single point design is a big “con” to me. I feel certain that a company like Kessil will eventually build a unit with this level of control. I’d buy one in a second!
So far I have the LED adhered to the heat sink and mounted the optics housing an hour later. Note: The optic housing has 4 little "nubs" on the back that are supposed to mesh in the LED plastic surround, they do not mesh well so I trimmed the nubs off and placed my RTV on this plastic surround. The housing rests flat and does not rock back and forth like before the modification. Should be a very secure adhesion once it sets.
The fan is secured via zip ties for easy removal if needed and I’m on hold for the Meanwell drivers and thermal cut out switch. I have expandable mesh cable sleeve for cable management and am still researching a housing design that will look good and be easy to fit.
I’ll update as the project progresses.
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