Led build~ 2' heatsink 200w

Randomblame

Randomblame

Well-Known Member
Tazbud said:
Thanks bro, I just had these on hand (mines LDD700-HW In 9-56v out 2-52v..) The voltage would be self regulating? but 'constant' (+ over powered)? I'll probably just buy another 12v source but these bucks would limit the needed wiring (for my setup).. for fans as well as extra small diodes.
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An example for a stepdown module with Vero18 und LPD40-1050mA. The driver in this case have 38v and the Vero needs only 29,5v so you can use the rest for the step down module to power the fan. Digikey have some step down modules especially for driving fans but I dont remember the name atm.
 
Positivity

Positivity

Well-Known Member
Well, let me start by saying, don't try adding a arduino unless you want a challenge.
The start of the thread should accomplish the goal of allowing people to use a t-slot with cobs. Also a way to make a easy cover and mounting platform for electronics.

I did divert to a more complicated setup, but I enjoy pushing myself. Even when I get stumped like right now.

Everythings wired and running, but as I expected the dimming isn't working. Will need to troubleshoot and read up on solutions..

Also realized these meanwells can't dim to zero without additional circuitry. So I'll have to slowly read what I can, or go without arduino on this build. I will give it a shot though, I'd like to see it fully functional.

Computers....:fire:


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alesh

alesh

Well-Known Member
Positivity said:
Well, let me start by saying, don't try adding a arduino unless you want a challenge.
The start of the thread should accomplish the goal of allowing people to use a t-slot with cobs. Also a way to make a easy cover and mounting platform for electronics.

I did divert to a more complicated setup, but I enjoy pushing myself. Even when I get stumped like right now.

Everythings wired and running, but as I expected the dimming isn't working. Will need to troubleshoot and read up on solutions..

Also realized these meanwells can't dim to zero without additional circuitry. So I'll have to slowly read what I can, or go without arduino on this build. I will give it a shot though, I'd like to see it fully functional.

Computers....:fire:


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You can get some relays to be able to completely dim (turn off) the drivers. Did you connect Arduino's PWM output directly to the drivers' input? MW requires 10V PWM, Arduino provides only 5V. You need to convert that 5V PWM signal to either analog 0-10V or 10V PWM. An op-amp circuit will probably be the easiest way.
 
alesh

alesh

Well-Known Member
jtizzle said:
Or perhaps just another 10v power supply and some pull up resistors?


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Can you elaborate? I think that you've confused pull up resistors with something else. Plus one might have troubles getting a 10V PSU.
 
Positivity

Positivity

Well-Known Member
I think i got it..

I was looking at the storm controller voltage converter that gg got. It turns the 5v pwm into 10v analog or pwm. I need the 10v pwm, I'm guessing.
The 10v pwm on the typhon has been known for awhile to have problems with certain drivers. But, the 5v pwm works, but only at half power. So using the converter I should get full power. I won't be able to plug in direct like the storm but I could just use a lead to it and use the one channel I need.

The LDDs are working fine,
I just need to get the cobs working right.
I'll still have a problem not being able to dim to zero though possibly..

I see why people just use the LDDs to dim to zero..

Controllers are pretty sweet..if they were more plug and play. Maybe the storm one day..just don't need all the extra functions. Will work on this a little more
 
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bigljd

Active Member
Posi,
How do those LDD 1000's get power - are they wired in series with the COBs on the DC side of your COB driver? How do you know how many LEDs can run off one LDD? Looks like 52v max, but is there a watt limitation for the LDD, or is it based on how many 'extra' watts you've got available on your main driver? I'm trying to wrap my head around how the LDDs work.

I'm ready to order parts for a 3 - Vero 29 3000k light driven by a HLG-120H-C1050B. Since the driver can run 4 Vero 29s, I've got some watts to spare, and would love to run 4 - 3watt deep red leds at 500mA, mounted between the COBs. Would the LDD work for this? Will dimming the HLG cause issues with the LDDs? Sorry if I ask too many questions, lol. :confused:
 
Positivity

Positivity

Well-Known Member
bigljd said:
Posi,
How do those LDD 1000's get power - are they wired in series with the COBs on the DC side of your COB driver? How do you know how many LEDs can run off one LDD? Looks like 52v max, but is there a watt limitation for the LDD, or is it based on how many 'extra' watts you've got available on your main driver? I'm trying to wrap my head around how the LDDs work.

I'm ready to order parts for a 3 - Vero 29 3000k light driven by a HLG-120H-C1050B. Since the driver can run 4 Vero 29s, I've got some watts to spare, and would love to run 4 - 3watt deep red leds at 500mA, mounted between the COBs. Would the LDD work for this? Will dimming the HLG cause issues with the LDDs? Sorry if I ask too many questions, lol. :confused:
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Posi,
How do those LDD 1000's get power - are they wired in series with the COBs on the DC side of your COB driver?

I have a 12v 2.1a dc power supply for my fans. It was only using about 5w so I just wired the LDDs into that supply. The uva consumes about 9w, the far red about 5w. Worked out great so far

How do you know how many LEDs can run off one LDD?

The specs in the datasheet say how many volts they can run. Than you need to stay within total power rating. My case only strings of less than 12v no more than 25w total.

Looks like 52v max, but is there a watt limitation for the LDD, or is it based on how many 'extra' watts you've got available on your main driver? I'm trying to wrap my head around how the LDDs work.

Haven't checked but seems the voltage rating will keep watts in check. In the case of a 12v 250w dc supply for example, it would be capable of running 5 LDDs at 52v at 1a....or 7 LDDs at 52v .700ma....each equalling about 250w.

I'm ready to order parts for a 3 - Vero 29 3000k light driven by a HLG-120H-C1050B. Since the driver can run 4 Vero 29s, I've got some watts to spare, and would love to run 4 - 3watt deep red leds at 500mA, mounted between the COBs. Would the LDD work for this? Will dimming the HLG cause issues with the LDDs? Sorry if I ask too many questions, lol. :confused:

No worries...answer what I can. I'm not a expert on electronics but this is my understanding.

You could run the reds off your hlg at 1a or build a parallel circuit off of your serial to cut the power in half to .500ma...haven't done it but theres a post somewhere in the forum with a sketch. The LDDs are different...they are made to run off a constant voltage dc supply. Not sure if you could use them with a constant current driver but it dosen't sound right..

The LDDs have a wired and pin out version. The wired is a bit easier but I think you could still solder leads on the pinouts. They are pretty cheap and easy to install....give it a try
 
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bigljd

Active Member
Ah, that makes more sense. For some reason I was assuming the COB driver was powering the LDDs. I wasn't planning on running a separate 12v DC power supply, so I don't think the LDDs would help me. I might still add the deep red LEDs, but if I do I'll get a cheapo driver to run them on a separate circuit. Thanks for taking the time to explain!
 
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Tazbud

Well-Known Member
I'm going to experiment with my LDD when I get the chance, they were recommended (for me) to power a 3w string from a larger CC /DC driver but iv'e not got my head around their constraints from reading the DS and elsewhere, I was just thinking they would reg the current at their rated output regardless of voltage.
 
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bigljd

Active Member
Tazbud said:
I'm going to experiment with my LDD when I get the chance, they were recommended (for me) to power a 3w string from a larger CC /DC driver but iv'e not got my head around their constraints from reading the DS and elsewhere, I was just thinking they would reg the current at their rated output regardless of voltage.
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Looking at the LDD-H spec sheet, the input voltage can vary from 9-56v, which seems like it would work nicely driven by a HLG COB driver if the COBs are running at 36v. The part that confuses me is that the input current for the 500ma version LDD ranges from 5ma to 450ma depending on the load the LDD is running. So if my HLG driver is pushing 1.05 amps, is that going to fry the LDD, or will the LDD only pull the current it needs to support the load?
EDIT: The more I think about it, the more i realize I have no idea what I'm talking about lol. If there's a string of COBs driven by the HLG, they might be pulling way more than 36v, which also might fry the LDD. Plus I reread Posi's reply to my post and he mentioned running a parallel circuit to cut the amps in half. I think I'll stick to my cheapo driver/separate circuit plan. Or I could buy and LDD and see if I can get it to catch fire... ha ha ha
:fire:
 
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Tazbud

Well-Known Member
I don't know what i'm talking about either o_O. Not intending to jack Pos's place, just to say, I have the .7a version, 0-650mA-in suggests that the input is regulated by the LLD driver (as well as the output via dim+/-)
 
mc130p

mc130p

Well-Known Member
Tazbud said:
I don't know what i'm talking about either o_O. Not intending to jack Pos's place, just to say, I have the .7a version, 0-650mA-in suggests that the input is regulated by the LLD driver (as well as the output via dim+/-)
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The input is taken as needed to support the output.
 
Positivity

Positivity

Well-Known Member
Tazbud said:
I don't know what i'm talking about either o_O. Not intending to jack Pos's place, just to say, I have the .7a version, 0-650mA-in suggests that the input is regulated by the LLD driver (as well as the output via dim+/-)
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Jack away...my brain is melted from reading about unintuitive arduino.
So a LDD working off a constant current driver? Never thought of using it like that. I do remember someone posting in my thread once about using step downs or something to run a fan off the driver..leds too I guess

mc130p said:
The input is taken as needed to support the output.
Click to expand...
So I guess it works fine like that?
 
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Tazbud

Well-Known Member
Thanks mc130p, so ideally (without understanding more) from a constant V source, the only one I'd have is 12V and that would need a step up conversion.. so couldn't run both fans and supp. diodes from bucks without another power source wired in anyway.
 
Positivity

Positivity

Well-Known Member
Alright.. Time to get this build back on track.

Computers coming out, it works best with drivers that dim to zero like the ldd. Found a bunch of band aid fixes and they started piling up one circuit after another...

I'll use it in another build, there's lots of good ways to use a typhon but not like this.

Next chance I get I'll get this thing up and running, hopefully by the weekend. Back to easy...:razz:
 
Positivity

Positivity

Well-Known Member
So heres the silver bullet finished. My beautiful cover got crooked..lol. May have to bodywork it a little. Its all good though, everythings secure and together.

I'll break down all the parts when I got some time. It'll take a bit to put a nice list of parts together.

4000k cxb 3070 bin bb
Oslon deep red bin 3t-4t
Oslon far red bin 3s4s
Ledengin 365nm 5w



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