diy led lighting assistance needed - Page 5 - The Planted Tank Forum
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post #61 of 68 (permalink) Old 08-25-2020, 06:39 PM Thread Starter
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ok

those arrived today also . i prefer to start with them, so where it's goes?

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1



Last edited by alfred3; 08-25-2020 at 06:39 PM. Reason: .
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post #62 of 68 (permalink) Old 08-25-2020, 07:15 PM
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ok

those arrived today also . i prefer to start with them, so where it's goes?

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1



Where the TC-421 is (replace it w/ one dimmer)...
REMEMBER do not power it w/ more than 10V.

It is just the Manual version of the TC.

"A man with a watch knows what time it is. A man with two watches is never sure"
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post #63 of 68 (permalink) Old 08-27-2020, 02:38 PM
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Just out of curiosity, do you recall an estimate of what your fist light as well as your more recent lights cost in supplies? I've been interested in building my own lights but don't have a good frame of reference for the total cost
My first build cost about INR 2000 about $25
$10 for LED's
$3 for the driver
$7 for the heat sink
$5 for wires, and thermal paste and miscellaneous items.

Now,

I use Mean well drivers, CREE LED's (I know, but i work with what i can get locally) heat sink like shown below...
I use a PAR meter, so I measure and build exactly what "I" need for the tank. Using good Quality stuff, the price is comparable to the lights available in the store.
How ever the advantage is that you can customize and fix stuff if it breaks.
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post #64 of 68 (permalink) Old 09-03-2020, 04:57 AM
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Quote:
Originally Posted by SirNut View Post
Just out of curiosity, do you recall an estimate of what your fist light as well as your more recent lights cost in supplies? I've been interested in building my own lights but don't have a good frame of reference for the total cost
Just jumping in here to give you a little more frame of reference.
I built my initial light for a 10 gallon and here are the basics to it.

7 luxeon 6500k = $17
3 luxeon 2700k = $8
From StevesLed's.

mean well 1000ma LDD-H driver = $6
48v 75w mean well switching power supply = $14
From LED supply.

Generic PWM dimmer hacked to control the LDD = $7 amazon
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post #65 of 68 (permalink) Old 09-11-2020, 03:08 PM Thread Starter
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the HLG-185H-36AB have a built in dimming option ,do i need to adjust the a or v down a bit before i am connecting it to the ac ?

the cobs are 33.7V and there is 2 options vo adjust and ai adjust

Last edited by alfred3; 09-11-2020 at 03:30 PM. Reason: .
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post #66 of 68 (permalink) Old 09-13-2020, 07:25 AM
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Voltage you can leave alone
The amps, you'll be starting at 5.2A output.
You can connect a 10-100k potentiometer to the dim circuit. Looks like the more resistance the brighter it is. Suppose you could temporarily dim it w/ like a 50k resistor. Effectively limiting average current.
Dialing down the amps (a) does the same thing sort of.
Normally I suppose you would measure the amp output "live" or plugged in, and adjust it.
If you have a 20A setting or so you shouldn't blow your meter.

Just remember in parallel each Cob will get
5.2A divided by the # of cobs you have wired up.

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post #67 of 68 (permalink) Old Today, 08:02 PM
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interested in how this build is coming along

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post #68 of 68 (permalink) Old Today, 08:52 PM
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Is this what happens when a engineer gets into the hobby and have a few too many hours on his hand

In all seriousness though, very informative DIY post, great stuff you guys got going on, love all the details and schematics y'all posted on this build, totally geeking out right now
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