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Help with homemade led lamp  [SOLVED]


Post Number:#1 Post Fri Oct 23, 2020 6:59 am
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With my Ferduino Mega based controller finished, I have decided to create the lighting for my new aquarium. I have thought of one between 500 and 600l and as I understand it, it should maintain more or less the ratio of 1W per liter, so I will need several multichip plates depending on the chosen model.

My first question is, which option do you think is the most recommendable of the following? Do you know more interesting options than the ones I include?

Is the correct Meanwell driver depending on the channels that I think?

What power supply would be suitable depending on the model?

Given my little knowledge of electronics, I'm sure that more questions will arise.


OPTION A - 25 MULTICHIP (75A ??)
CHANNEL 1: 5 Cree XTE Royal Blue (15V 350-1500mA (MW-1000H))
CHANNEL 2: 5 Cree XPE2 Blue (15V 350-1000mA (MW-700H))
CHANNEL 3: 3 Creed XTE 6500K + 2 Cree 5000K (15V 350-1500mA (MW-1000H))
CHANNEL 4: 5 SemiLED UV 420nm (15V 350-1000mA (MW-700H))
CHANNEL 5: 5 Cree XTE Royal Blue (15V 350-1500mA (MW-1000H))

OPTION B - 21 MULTICHIP (63A ??)
CHANNEL 1: 4 Epileds UV 395nm (14-15V 350-600 mA (MW-500H))
CHANNEL 2: 4 XTE Royal Blue (12V 350-1500mA (MW-1000H))
CHANNEL 3: 4 XPE2 Blue (12V 350-1000mA (MW-700H))
CHANNEL 4: 4 Epileds UV 420nm (12V 350-1500mA (MW-1000H))
CHANNEL 5: 2 XPG2 8000K + 1 Epileds 660nm + 1 Epileds 495nm + 1 XTE Royal Blue (14V 350-600mA (MW-500H))

OPTION C 25 MULTICHIP (75W ??)
CHANNEL 1: 2 SemiLED UV 420nm + 3 XTE Royal Blue (15-16V 350-1000mA (MW-700H))
CHANNEL 2: 4 XPE2 Blue +1 3535 Epileds UV 420nm (15V 350-1000mA (MW-700H))
CHANNEL 3: 2 XTE 6500K + 1 XTE 5000K + 2 XTE Royal Blue (15V 350-1500mA (MW-1000H))
CHANNEL 4: 4 XPE2 Blue + 1 3535 Epileds UV 420nm (15-16V 350-1000mA (MW-700H))
CHANNEL 5: 2 SemiLED UV 420nm + 3 XTE Royal Blue (15V 350-1000mA (MW-700H))

OPTION D - 21 MULTICHIP (63A ??)
CHANNEL 1: 2 SemiLED UV 395nm + 2 420nm (14-15V 350-1000mA (MW-700H))
CHANNEL 2: 4 Cree XPG2 6500K (12V 350mA-1500mA (MW-1000H))
CHANNEL 3: 4 Cree XPE2 Blue 470-480nm (12V 350-1000mA (MW-700H))
CHANNEL 4: 4 Cree XTE Royal Blue 450nm (12V 350-1500mA (MW-1000H))
CHANNEL 5: 2 Cree XPE2 Green 525-530nm + 2 Cree XPE Reed 660nm + 1 Cree XPE2 Amber 595nm (12V 350-1000mA (MW-700H))

Gracias

Post Number:#2 Post Fri Oct 23, 2020 12:36 pm
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Hi!

I don't think right the correlation between Watt and liter because a deep tank with small surface area can have the same volume as a shallow tank with large surface are and in this cases the light concentration will be so much different.

Also the coral type that you thinking to have in tank should have considered.

My reference to calculate the power for a reef tank with SPS only is 360 W/m² because I see a beautiful reef tank using this ratio years ago.

The tank that I have as reference was using Cree LEDs of 3W distributed in this way:

Image


Now searching for commercial references I found this article where a Hydra 64 and a tank with 1,20 x 0,6 m are used for tests.

In this article 2 scenarios were used where the first is for LPS and Soft corals and the second is for SPS.

LPS and Soft corals

Image


SPS corals

Image


In the first scenario is used 2 HD64 in the second 3 HD64.

Considering that HD64 has about 90% of efficiency each unit has 120 W of real power.

So for LPS/Soft 240 W is used and for SPS 360 W is used.

Calculating the ratio for LPS/Soft we have:

240 W / (1,2 x 0,6 m) = 333 W/m²

Calculating the ratio for SPS we have:

360 W / (1,2 x 0,6 m) = 500 W/m²


Concluding:

If you are going to use 3W LED use 360 W/m² for SPS and about 300 W/m² for LPS/Sof.

If you are going to use multchip LED use 500 W/m² for SPS and about 330 W/m² for LPS/Sof.

My first question is, which option do you think is the most recommendable of the following?


I can't say because each LED will give a final color as result and it's a personal choice.


Do you know more interesting options than the ones I include?


The options are single or multi chip LED.

Is the correct Meanwell driver depending on the channels that I think?


If you are going to use LED with max. current of 1500 mA a LDD-1200H should be better.

What power supply would be suitable depending on the model?


If you are going to a multichip LED with different voltages like your option B you should use power supplies according to each voltage or add a step down on circuit before each driver. The best option is to agroup all 15 V LED channels and connect to a 15 V power supply, the same for others voltages.

Best regards.
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Post Number:#3 Post Fri Oct 23, 2020 1:29 pm
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Thanks for the explanation, it has been clear to me !!

Greetings,

Post Number:#4 Post Fri Oct 23, 2020 1:31 pm
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Glad to know.
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Post Number:#5 Post Sun Oct 25, 2020 7:14 am
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The intention is to mount the lighting with 6 multichip plates with the following characteristics

CHANNEL 1: 5 Cree XTE Royal Blue 15V @ 350-1500mA LDD 1000H
CHANNEL 2: 5 Cree XPE2 Blue 15V @ 350-1000mA 700H
CHANNEL 3: 3 Creed XTE 6500K + 2 Cree 5000K 15V @ 350-1500mA LDD 1000H
CHANNEL 4: 5 SemiLED UV 420nm 15V @ 350-1000mA 700H
CHANNEL 5: 5 Cree XTE Royal Blue 15V @ 350-1500mA 1000H

I have a great ignorance in electronics and after informing myself I think that this solution could be valid.

I plan to use the following drivers on a 5 channel PCB

CHANNEL 1: LDD 1000H
CHANNEL 2: 700H
CHANNEL 3: 3 LDD 1000H
CHANNEL 4: 5 700H
CHANNEL 5: 1000H

They are suitable?

Based on the following calculations I think that for 6 multichip plates I will need 2 groups of 3

Assuming the use of 48V power supply (45V when using LDD-H)

15 * 3 = 45 V (3 multichip boards maximum).

So I will need 2 5 channel PCB

Rough estimate of the power required for the 48V power supply

Sum by controllers used:
1000 + 700 + 1000 + 700 + 1000 = 4,400 mA
4.4 A x 48 V = 211 W

It would really be:

(45V + 3V) x 1 A = 48 W
(45V + 3V) x 0.7 A = 33.6 W
(45V + 3V) x 1 A = 48 W
(45V + 3V) x 0.7 A = 33.6 W
(45V + 3V) x 1 A = 48 W

So the power supply needed to control 3 multichip boards would be:

48 V
4.4 A
211.2 W

As a summary you would need:

6x multichip LED board
2x 5-channel PCB (2 LDD 700H and 3 LDD 1000H on each PCB)
2x Power supply (48V, 4.4A, 211.2W)

Is the configuration correct?

On the other hand, for the independent control of each channel it would simply be to connect channel to channel on both PCBs?

I don't know if it's all too tight, is there a better solution?

Thank you very much

PS: maybe you should join with the previous post

Post Number:#6 Post Sun Oct 25, 2020 1:40 pm
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Hi!

According to my understanding you are talking about something like this:

Image


It seems ok to me but as I told before for the channel with max. current of 1500 mA the LDD 1200 should be better because 300 mA is enough safety margin.

The part list could be.

6 x 100w multichip LED
2 x 5-channel PCB
6 x LDD-1200-H
4 x LDD-700-H
1 X 750 W / 15.7 A / 48 V power supply.

P.S You can leave this topic opened until finish the build.

Best regards.
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Post Number:#7 Post Thu Dec 10, 2020 3:53 pm
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Hi!

Any news here?

Best regards.
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Post Number:#8 Post Sat Dec 26, 2020 4:41 am
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I am renovating at home and I will proceed to disassemble the aquarium so it will take a while to reassemble a new tank.

So if you like, you can close the thread until I can return to the hobby.

Feliz Natal !!

Post Number:#9 Post Fri Jan 01, 2021 7:48 am
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Hi!

Ok! I hope you can return coming soon.

Happy new year!

Best regards.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.




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