LED Panel

[fooyl]

Hi bro sherman,

I would like to have the same combination of what you are doing now.

can you PM me the total cost of the LEDs and the constant drivers for the set up that you are doing now.

As for the DC, pls advise what configuration. I have many DC from laptops etc that I can use.

I intent to place order with you by this week.

Thank you.

regards

fooyl

As all my friends still on leave cannot get any help.

So do all the drilling and tapping myself.

Not easy job especially the hole is only M2 size.

Finish the job this morning 0400 am

[fooyl]

Sorry, I am referring to your threat #330. Total 14 LEDs.

Hi bro sherman,

I would like to have the same combination of what you are doing now.

can you PM me the total cost of the LEDs and the constant drivers for the set up that you are doing now.

As for the DC, pls advise what configuration. I have many DC from laptops etc that I can use.

I intent to place order with you by this week.

Thank you.

regards

fooyl

[BarraCudaTM]

I noticed that you connect the LED in series? Is there any reason for doing this or is parallel better?

Its easier to find a 24V, 3A supply than to find a 5V, 15A supply.

Running LEDs in parallel uses higher current compared to series. You will need a higher gauge wire to prevent excessive voltage drop and heating.

Smart LED drivers are able to run both in series and parallel, other drivers may not be able to regulate the current when 1 of the LEDs fail. That will cause the excess current to flow into the rest of the LEDs thus causing all the rest of the LEDs to fail as well.

If you run a fixed 700mA LED driver, connecting 2 LEDs in parallel will cause the current to be splitted, resulting in 350mA in each LED thus underdriving the LED

[Thexder]

Its easier to find a 24V, 3A supply than to find a 5V, 15A supply.

Running LEDs in parallel uses higher current compared to series. You will need a higher gauge wire to prevent excessive voltage drop and heating.

Smart LED drivers are able to run both in series and parallel, other drivers may not be able to regulate the current when 1 of the LEDs fail. That will cause the excess current to flow into the rest of the LEDs thus causing all the rest of the LEDs to fail as well.

If you run a fixed 700mA LED driver, connecting 2 LEDs in parallel will cause the current to be splitted, resulting in 350mA in each LED thus underdriving the LED

Thanks for the reply. Just thought that when in series, if 1 LED fail, the whole circuit will be dead.

[LoReNsIa]

sry to ask, cause i've fixed my led light already.

first, i've use a 24v with 3A power supply to run my 24 LED. but i connected my lighting from parellel to series. is it correct?

i've split the power to 4 output which connected 6 LED in series method. which mean i got 4 rows of lighting. am i under running my LED?

how u guys can teach me more. cause i only know nuts about electricity.

thanks.

Lorenzo

[BarraCudaTM]

Thanks for the reply. Just thought that when in series, if 1 LED fail, the whole circuit will be dead.

Correct but it will fail safe. If connected in parallel, all will fail dead. You might have to replace all the LEDs which will be expensive.

[macro]

sry to ask, cause i've fixed my led light already.

first, i've use a 24v with 3A power supply to run my 24 LED. but i connected my lighting from parellel to series. is it correct?

i've split the power to 4 output which connected 6 LED in series method. which mean i got 4 rows of lighting. am i under running my LED?

how u guys can teach me more. cause i only know nuts about electricity.

thanks.

Lorenzo

depending on your constant current driver,if you run at 700mA per row is enough.

another alternative is to use seperate power supply for white and blue connected to different timer to stimulate day/night.

[sherman]

I noticed that you connect the LED in series? Is there any reason for doing this or is parallel better?

I have a total of 21 LEDs .

I break them down into 3 groups.

Each group is 7 LEDs in series.

Each group is drive by one LED power supply or one DC adaptor

with one constant current driver.

The number of LEDs we connect in series is basr on the forward

voltage and forward current of each LED.

Each LED forward voltage is around 3 vdc.

If you drive 1 LED you need around 5dc.

Since I am using 24 DC adaptor I can drive up to 7 LEDs

so I connect 7 LED in series

[sherman]

Its easier to find a 24V, 3A supply than to find a 5V, 15A supply.

Running LEDs in parallel uses higher current compared to series. You will need a higher gauge wire to prevent excessive voltage drop and heating.

Smart LED drivers are able to run both in series and parallel, other drivers may not be able to regulate the current when 1 of the LEDs fail. That will cause the excess current to flow into the rest of the LEDs thus causing all the rest of the LEDs to fail as well.

If you run a fixed 700mA LED driver, connecting 2 LEDs in parallel will cause the current to be splitted, resulting in 350mA in each LED thus underdriving the LED

Wow very good explanation Bro BarraCuda.

I never read your reply then I reply

[peacemaker]

Bro Sherman, mind PMing me the cost of setting up an LED lightset for a 1 Ft cube? Pls kindly include 2 switches (whites & blues) in your estimate. TIA!

[sherman]

depending on your constant current driver,if you run at 700mA per row is enough.

another alternative is to use seperate power supply for white and blue connected to different timer to stimulate day/night.

Wow all of you are the actual expert.

[sherman]

Hi bro sherman,

I would like to have the same combination of what you are doing now.

can you PM me the total cost of the LEDs and the constant drivers for the set up that you are doing now.

As for the DC, pls advise what configuration. I have many DC from laptops etc that I can use.

I intent to place order with you by this week.

Thank you.

regards

fooyl

Bro,

What is your tank size?

Post #330 is for 1 ft by 1ft by 1 ft tank only

For constant current driver I still do not have them manufacture as yet

due to some technical issue with this new chip.

What DC adaptor you have 24 v 2.5 A or what?

And how many pieces

Do you need aluminium mounting plate also?

And do you have a light casing to mount the whole assembly?

Lastly you just want all the parts or you want me to DIY the whole set

for you

Cheers

[sherman]

Bro Sherman, mind PMing me the cost of setting up an LED lightset for a 1 Ft cube? Pls kindly include 2 switches (whites & blues) in your estimate. TIA!

Bro,

You want parts or I DIY the set for you?

[peacemaker]

Bro,

You want parts or I DIY the set for you?

Your DIY.

[Jameshong]

Bro,

What is your tank size?

Post #330 is for 1 ft by 1ft by 1 ft tank only

For constant current driver I still do not have them manufacture as yet

due to some technical issue with this new chip.

What DC adaptor you have 24 v 2.5 A or what?

And how many pieces

Do you need aluminium mounting plate also?

And do you have a light casing to mount the whole assembly?

Lastly you just want all the parts or you want me to DIY the whole set

for you

Cheers

I have 5 BuckPuck, 3021-D-E-1000 on hand..you want?

[fooyl]

Hi bro sherman,

I think what I need is only the LEDs.

can I check for your 1ftx1ftx1ft tank, you are using 4W LED or 1Watt?

My tank size is 24ft x 14ft x 16ft ht . Effective tank area or lighted area is 19ft x 14ft.

I have a 20yrs DC constant driver built by my father and he said that the gadget can regulate the current as per the required by the LED. I think 24V 2.5A is not an issue. How many of this kind constant driver do I need?

also have aluminum plate .

Please see pics.

Bro,

What is your tank size?

Post #330 is for 1 ft by 1ft by 1 ft tank only

For constant current driver I still do not have them manufacture as yet

due to some technical issue with this new chip.

What DC adaptor you have 24 v 2.5 A or what?

And how many pieces

Do you need aluminium mounting plate also?

And do you have a light casing to mount the whole assembly?

Lastly you just want all the parts or you want me to DIY the whole set

for you

Cheers

[LoReNsIa]

depending on your constant current driver,if you run at 700mA per row is enough.

another alternative is to use seperate power supply for white and blue connected to different timer to stimulate day/night.

I'm not using driver. Am using resistor. Knowing that is not a wise choice. But for the time being, will stick to the resistor. Resistor is a 15ohm resistor. thanks and please advice.

[sherman]

Hi bro sherman,

I think what I need is only the LEDs.

can I check for your 1ftx1ftx1ft tank, you are using 4W LED or 1Watt?

My tank size is 24ft x 14ft x 16ft ht . Effective tank area or lighted area is 19ft x 14ft.

I have a 20yrs DC constant driver built by my father and he said that the gadget can regulate the current as per the required by the LED. I think 24V 2.5A is not an issue. How many of this kind constant driver do I need?

also have aluminum plate .

Please see pics.

Bro,

I think should be 24 in by 14 in by 16 in right?

You can use that but that is usually for desk top testing.

You can get a smaller version of constant current power supply unit

for under S$50

I will PM you the number of LED you need assuming you want 20k

light color.

Regards

Sherman

[sherman]

I have 5 BuckPuck, 3021-D-E-1000 on hand..you want?

Wow anyone who need the 1 A constant current driver can get from Bro James

[sherman]

I'm not using driver. Am using resistor. Knowing that is not a wise choice. But for the time being, will stick to the resistor. Resistor is a 15ohm resistor. thanks and please advice.

Bro,

Chances of burning off your LED is very high unless you run at 50% of the rated current.Try to invest in a constant current driver or LED power supply as soon as you can

[macro]

I'm not using driver. Am using resistor. Knowing that is not a wise choice. But for the time being, will stick to the resistor. Resistor is a 15ohm resistor. thanks and please advice.

you will have problem finding a resistor to dissipitate the power with a 15ohm resistor.

if you really wan to use resistor,

In theory you can run with 7 in a row with a 3.3ohm 1watt resistor provided everything is at constant.

you will burn your led if there is a variation of a few voltage increase in the voltage source.

what sherman say is correct invest in a constant current driver, the cost is cheaper compare to your rows of led.

[fooyl]

Yes, yes,

sorry bro. Was very late yesterday night.

Thanks.

fooyl

Bro,

I think should be 24 in by 14 in by 16 in right?

You can use that but that is usually for desk top testing.

You can get a smaller version of constant current power supply unit

for under S$50

I will PM you the number of LED you need assuming you want 20k

light color.

Regards

Sherman

[LoReNsIa]

Hmmm. Think i need to invest one real fast. Bro sherman do pm me price for driver. Can?

And Thanks to bro that help me..

[sherman]

Bro,

Need to know what voltage and current you need.

How many LED per circuit

Cheers

[sherman]

Next you connect your LED rung positive cable to the positive terminal of the constant current driver

and the negative cable of the LED rung to the negative terminal of the constant current driver

Picture of both positive and negative cable from your LED rung

Another closer picture of the connections between one of the LED rung with the constant current driver circuit