General DIY LED thread

[oreo54]

Correct yes,worst case scenario I will send all my 3ups to Steves and have them reflowed to my likings.

Ok this is a bit of a napkin design.. Yea 9 luxeon c RB's run in series will draw roughly

about 100mA at 2.66 v each. 23.94v .. ( 24V power supply)
So yea 24v ps is pretty soft but low total output to the potential.
With a 24.75V power supply the leds will draw 350mA
2.85V 800mA..25.65.

Just buy the PART #: LRS-35-24 for $12..
Trim it to 13V and add

each 1 ohm resistor dissipates 640 mW

in series at the end.Done..
About 20W..

• each 1 ohm resistor dissipates 640 mW
• the wizard thinks the power dissipated in your resistor is a concern
• together, all resistors dissipate 640 mW
• together, the diodes dissipate 20520 mW
• total power dissipated by the array is 21160 mW
• the array draws current of 800 mA from the source.

 

[Steven Garland]

It has a 24v 2A psu,I also have a 48v 2A as well. Maybe add a couple more leds and use the 48v psu ?

 

[oreo54]

48 is just 2x 24.. Doesn't change anything except total output of course.

Keep in mind this is using spec sheets. Would be interesting to see what you measure in amps out and voltage on what you have now..


If you are buying the new leds through led supply might as well throw i the $12 power supply.
https://www.ledsupply.com/?gad_sour...wAMuhZHDIm7HHy-ZulJo4lobRRm3zUCYaAgwcEALw_wcB

This is an example.. With another 3 leds in series your voltage to each drops to 2.67v each
Without the resistor the voltage with the orig 15 is over 3v . Pretty sure you'd damage them.
With the resistor you just waste a bunch as heat and need a decent resistor.

 

[Lingwendil]

I would be inclined to grab an LDB-L to drive them, it's a buck/boost so can actually go over the power supply. Ledsupply.com has them. I use them to run Bridgelux COBs off of 19 volt laptop power bricks.

 

[oreo54]

I have flowed these Luxeon C Violets onto my new NanoBox arrays. They are great. I have been driving them with LDD-1000s with no issues.

You replaced rebels with c's. Or just the T's ?

NanoBox Reef now using a very efficient array of Luxeon T & Rebel LEDs | Reef Builders | The Reef and Saltwater Aquarium Blog

It’s been a little while since we’ve heard from NanoBox Reef but with ReefStock looming, they’ve taken the lid off a new array of LEDs that offer impressive new levels of efficiency. The new board for…

reefbuilders.com

OR...You just made new boards..

New NanoBox Reef LED Arrays

So back in February I went on a quest for new Nano Box Reef arrays. They were widely known as some of the better arrays on the market. They had a small form factor, good color spectrum and excellent color blend. And they could be had for relatively cheap. I was unable to find any new arrays so...

www.reef2reef.com

 

[oreo54]

I would be inclined to grab an LDB-L to drive them, it's a buck/boost so can actually go over the power supply. Ledsupply.com has them. I use them to run Bridgelux COBs off of 19 volt laptop power bricks.

Yea.. that too..
Honestly I keep forgetting about the boost ones.

 

[Steven Garland]

They just like ldd's are the pinouts the same ?

Nvm I see they are. Also,LS doesn't have them in stock. Ldd's I am finding to be in stock at most places that aren't $10-$15 now.

 

[braaap]

You replaced rebels with c's. Or just the T's ?

NanoBox Reef now using a very efficient array of Luxeon T & Rebel LEDs | Reef Builders | The Reef and Saltwater Aquarium Blog

It’s been a little while since we’ve heard from NanoBox Reef but with ReefStock looming, they’ve taken the lid off a new array of LEDs that offer impressive new levels of efficiency. The new board for…

reefbuilders.com

OR...You just made new boards..

New NanoBox Reef LED Arrays

So back in February I went on a quest for new Nano Box Reef arrays. They were widely known as some of the better arrays on the market. They had a small form factor, good color spectrum and excellent color blend. And they could be had for relatively cheap. I was unable to find any new arrays so...

www.reef2reef.com

New boards. Same dimensions as the originals. But updated diodes and a connector for ease of swapping. Yet I have found out wiring up the harness takes longer than just soldering to the pads.

 

[Lingwendil]

Mouser and Digi-key are my go-to nowadays- Mouser doesn't charge tariff fees, but Digi-key will on Meanwell parts.

I just ordered 6 LDD-1050H drivers from Mouser like two days ago, they were $5.01 each.

 

[Steven Garland]

From what I saw last night 700's were OOS so I am thinking of just buying some LDD-L's from LS for $5.

 

[Lingwendil]

I use the LDD-L for almost everything for 36 volts or lower, love them. I only use the H for big stuff or larger COBs.

I still have a bunch of boards and I'm up to six aquariums with more on the way, so I'll be setting up a few more soon.

 

[Steven Garland]

So,I will just order 2 700 L's then because I am making small arrays nothing crazy. Probably 9-13 leds in total.

 

[Lingwendil]

You'll get 10-11 LEDs per string with the L, per channel with a 36 volt supply. Perfect for smaller builds. Love them.

 

[oreo54]

So,I will just order 2 700 L's then because I am making small arrays nothing crazy. Probably 9-13 leds in total.

If you are using only violets .
2.925v@ 700mA
7@24v ps using ldd.
11@ 36v
15@ 48v

Using the 3v "loss"
48v is the " best" 3 by voltage 3x5
45 /2.925 = 15.38 diodes.

30 watt array

Royal blue is 2.825v @700mA
Many other colors are higher voltages
Odd. Well not the "reddish" side.
Reg blue is 3.32v @700mA.

Point is to keep your color voltages in mind.