You wanna try the 1600ma LDD-H compatible version? I test them against a 50W BridgeLux BXRA-C4500 and they work well as long as some air cooling is provided. Send me a PM.
Here's a photo of the little bugger-
Meanwell LDD driver: for those who want to dim to 0 using Arduino
- Thread starter pwreef
- Start date
You wanna try the 1600ma LDD-H compatible version? I test them against a 50W BridgeLux BXRA-C4500 and they work well as long as some air cooling is provided. Send me a PM.
Here's a photo of the little bugger-
Aqualund
New member
The "Elves" have been busy again!
Just built out a new 8up PcB and a new 4up LDD-H that includes an SCW12 DC/DC convertor and an arduino PWM fan control circuit. Check em out. I'll post the build files if there's an interest.
Can you point me in the direction of those pin sockets?
Ebay links aren't allowed, so this is the closest we can get. Do a search for
"New 10pcs/lot Machined Pin Header precision 40 pin Male to Female" There's one seller that has them. 10 X 40 for $3.19 w/ free shipping. That's the best deal I've found.
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You wanna try the 1600ma LDD-H compatible version? I test them against a 50W BridgeLux BXRA-C4500 and they work well as long as some air cooling is provided. Send me a PM.
Here's a photo of the little bugger-
msg sent really looking forward to trying a few
gilles0181
New member
On page 27 of this thread (long time ago) O2SurPlus helped me with the Profilux dimming stuff. I ordered the boards but never came to DIYing it due to lack of time. Leds & driver have evolved so has my electrical knowledge 
So the plan is now to have either 30 or 60 XT-E's (cool white) over my planted tank. (Yes i know i need new boards)
I will probably be using a max. of 10 leds per driver (Mean Well LDD-1000H). When giving 1000ma the XT-E's should give a forward voltage of around 3.15-3.20; giving the need for a power supply at least capable of giving 1A 32v (for 1 string of 10 XT-E). Adding some headroom this would require a slightly heaver power supply.
I hope i am still correct as far as this goes
So; next up; the Profilux PWM debacle. Regarding this post, i went back to the pdf. See attached PNG. If i read the post correctly, i would need to supply a 1k ohm resistor with the 5V source; (as that will provide the 5ma for the LDD-L) Does the LDD-H also require 5ma or more?
Last question regarding this;
according to the PNG, i can have at least 4 drivers attached to the Led-Control4 passive. Can i add additional drivers to that (e.g. 2, 3 or 4 drivers to 1 channel instead of just 1 driver?) If so, i think i need a higher resistor since adding more drivers requires higher milliamps on the line?
So the plan is now to have either 30 or 60 XT-E's (cool white) over my planted tank. (Yes i know i need new boards)I will probably be using a max. of 10 leds per driver (Mean Well LDD-1000H). When giving 1000ma the XT-E's should give a forward voltage of around 3.15-3.20; giving the need for a power supply at least capable of giving 1A 32v (for 1 string of 10 XT-E). Adding some headroom this would require a slightly heaver power supply.
I hope i am still correct as far as this goes
So; next up; the Profilux PWM debacle. Regarding this post, i went back to the pdf. See attached PNG. If i read the post correctly, i would need to supply a 1k ohm resistor with the 5V source; (as that will provide the 5ma for the LDD-L) Does the LDD-H also require 5ma or more?
Last question regarding this;
according to the PNG, i can have at least 4 drivers attached to the Led-Control4 passive. Can i add additional drivers to that (e.g. 2, 3 or 4 drivers to 1 channel instead of just 1 driver?) If so, i think i need a higher resistor since adding more drivers requires higher milliamps on the line?
Attachments
jedimasterben
LED world domination!
On page 27 of this thread (long time ago) O2SurPlus helped me with the Profilux dimming stuff. I ordered the boards but never came to DIYing it due to lack of time. Leds & driver have evolved so has my electrical knowledge
You'll not want to use all cool white over a planted tank - at most, half cool white and half warm white. All cool white washes out colors (just like over marine tanks), and provides nearly all blue spectra, whereas plants want almost exclusively red.
Use Hoppy's calculator to figure out how many LEDs you need: http://www.plantedtank.net/forums/showpost.php?p=1771446&postcount=1 (and Excel spreadsheet is in this post: http://www.plantedtank.net/forums/showpost.php?p=1798147&postcount=8 )
gilles0181
New member
Good point; i am trying to 'mimic' the Dolce Bianco; and thought it only uses coolwhite; However, referring to the site, it uses a 50/50 mix of warm-white and neutral-white; not even the cool-white. So thank you for preventing me to make a mistake. Since they will be dimmable and i own a par meter, to much light is not a problem for me.
Vertex uses 2 leds per 'board' (warm-white and neutral-white combi) and 6 Cree XPE LEDs per 300mm. If i just 'copy that' for the XT-E's i think i am golden. They didn't add lenses to them; which is something i could always do, right?
Vertex uses 2 leds per 'board' (warm-white and neutral-white combi) and 6 Cree XPE LEDs per 300mm. If i just 'copy that' for the XT-E's i think i am golden. They didn't add lenses to them; which is something i could always do, right?
Nope-Nada-Zip-Zilch. The ELN is a "constant current" Led driver. You need a "CONSTANT VOLTAGE" power supply.
Sacohen
New member
I'm taking a different road with the lighting and have some parts that I started accumulating that I want to get rid of.
A 400W 48V power supply (meanwell knockoff)
About 4 older 4up boards 1 of them has 4 1000m LDD drivers and everything already soldered to it.
I was told that everything worked when I bought it from someone who did the same thing and changed directions.
Anyone interested PM me.
A 400W 48V power supply (meanwell knockoff)
About 4 older 4up boards 1 of them has 4 1000m LDD drivers and everything already soldered to it.
I was told that everything worked when I bought it from someone who did the same thing and changed directions.
Anyone interested PM me.
Actually O2 it's both, depending on the settings of the internal pots, It will not likely run 4 LDD 1000H's unless you only had one or two leds on each one (total watts is still the way to size PSU and LDD drivers) Your main benifit would be using multiple smaller drivers or less than full strings. You still only get 60 watts max from the ELN any way you slice it. But you could potentially upgrade an old setup to have multiple channels off a single ELN.
There are cheaper PSUs by far but if you've already got one may as well re-use it. A great number of the meanwell LED drivers can serve double duty. Just refer to their specs and data sheets.
It will work within the bounds of the ELN. You have 60 watts and 24 to around 54 volts to work with, with a max current of ~1.3 amps.
So any combination that stays within those bounds will work using LDDs.
4 LDD-1000s with just a few LEDs each will work (accounting for loss of efficiency and ample head room)
4 LDD-1000s with full strings of 12 or more, not a chance.
It will work within the bounds of the ELN. You have 60 watts and 24 to around 54 volts to work with, with a max current of ~1.3 amps.
By my calculation you would only be able to run 1 LDD-1000. If you try to run 4 you effectively will be splitting the Amps to 325mA / driver. Voltage is the same through each driver. At this point I don't see the point on using LDD-1000 you might as well use LDD-300, which is a much weaker lighting set up.
By my calculation you would only be able to run 1 LDD-1000. If you try to run 4 you effectively will be splitting the Amps to 325mA / driver. Voltage is the same through each driver. At this point I don't see the point on using LDD-1000 you might as well use LDD-300, which is a much weaker lighting set up.
