Why am I not building my own Kessel Tuna Sun or similiar - The Planted Tank Forum
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post #1 of 58 (permalink) Old 09-01-2015, 07:02 PM Thread Starter
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Why am I not building my own Kessel Tuna Sun or similiar

Watch this,
https://www.youtube.com/watch?v=c--5c3Egv4E


then this
https://www.youtube.com/watch?v=L3LWXznJx_0

then look at this..
http://store.yujiintl.com/collection...ant=1424975553
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post #2 of 58 (permalink) Old 09-01-2015, 07:38 PM
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game changer


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post #3 of 58 (permalink) Old 09-01-2015, 08:23 PM Thread Starter
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just order the COB Led from Yuji and the misc. parts.

will have to post a progress thread when I get everything.
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post #4 of 58 (permalink) Old 09-02-2015, 12:54 AM
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Yugi seems very expensive.


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post #5 of 58 (permalink) Old 09-02-2015, 01:04 AM Thread Starter
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should be able to build the entire unit for about $100.00
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post #6 of 58 (permalink) Old 09-22-2015, 07:18 PM Thread Starter
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So, got to doing some research and exploring....a couple notes on the interwebs say if you drive these LEDs with a voltage reguilator as described you will drasticly shorten their lives. They like a constant current driver.

That got me searching for dimmable LED drivers and of course Mean Well has a ton.
I ordered one of these.
HLG-120H-36A: MEAN WELL: Power Supplies & Wall Adapters

Now that does A LOT of things!
1. Much less build/solder.
2. Much cleaner design, the LED mounted to the cooler is the only thing hanging over the tank.
3. The PS can be remotely located ANYWHERE.
4. All that's needed is 12v DC to the computer fan. I can wrap the wire around the PS cord and run it to the cooler.

I have the LED, the PS should be here in a couple days. When it gets here should be a 5 minute wire up!

Stay tuned!

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post #7 of 58 (permalink) Old 09-22-2015, 08:26 PM
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Quote:
Originally Posted by ichy View Post
So, got to doing some research and exploring....a couple notes on the interwebs say if you drive these LEDs with a voltage reguilator as described you will drasticly shorten their lives. They like a constant current driver.

That got me searching for dimmable LED drivers and of course Mean Well has a ton.
I ordered one of these.
HLG-120H-36A: MEAN WELL: Power Supplies & Wall Adapters

Now that does A LOT of things!
1. Much less build/solder.
2. Much cleaner design, the LED mounted to the cooler is the only thing hanging over the tank.
3. The PS can be remotely located ANYWHERE.
4. All that's needed is 12v DC to the computer fan. I can wrap the wire around the PS cord and run it to the cooler.

I have the LED, the PS should be here in a couple days. When it gets here should be a 5 minute wire up!

Stay tuned!
your drive current is a bit high for that chip...Better plan on 2 things:
REALLY good cooling and/or running it not at 100% on.

A LDD-LW @ 1500mAand separate power supply would have been my preferred choice..

Other would be LDD-hw's @1000mA
Of course both use 5V PWM for dimming..not the same as your choice either

I realize "all in one" have advantages but I do prefer those little puck drivers

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post #8 of 58 (permalink) Old 09-22-2015, 08:45 PM Thread Starter
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Originally Posted by jeffkrol View Post
your drive current is a bit high for that chip...Better plan on 2 things:
REALLY good cooling and/or running it not at 100% on.

A LDD-LW @ 1500mAand separate power supply would have been my preferred choice..

Other would be LDD-hw's @1000mA
Of course both use 5V PWM for dimming..not the same as your choice either

I realize "all in one" have advantages but I do prefer those little puck drivers
Yep, the LED will be attached to a computer heat sink/fan like in the youtube video.

That driver allows for resistive dimming, so I'll put a POT in and run it at less voltage on the DC side.

I didn't want to get into the PWM because that unit uses a 10V PWM and that would really mess up the simplicity.

Keep talking though, we may get one of these working! Appreciate all the thoughts and help I can get!

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post #9 of 58 (permalink) Old 09-25-2015, 06:55 PM
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That driver allows for resistive dimming, so I'll put a POT in and run it at less voltage on the DC side.

I didn't want to get into the PWM because that unit uses a 10V PWM and that would really mess up the simplicity.
Actually the "output" is still (more than likely) PWM only the control circuit is resistive..

Looked at that chips data sheet and for some odd reason it states max current is 10000mA (10A).. Seems just wrong..

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post #10 of 58 (permalink) Old 09-25-2015, 07:18 PM Thread Starter
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ya it says 3 in 1 dimming; resistive, PWM and voltage, so not sure how that works, but you are probably right. There is an output cable that you can use to dim, but its still 10v PWM which sounds like a big hassle to deal with!

BUT a bigger problem, the part is on 6 week back order, SO I'd like to source a new dimmable, power supply.

You are correct I looked at the data sheet again...it says 10 AMPS!!! Geez I think my clothes dryer uses less amps! LOL....

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post #11 of 58 (permalink) Old 09-25-2015, 10:55 PM
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PDF data sheet that opens is for a 100watt.
Still seems high to me.


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post #12 of 58 (permalink) Old 09-25-2015, 11:07 PM Thread Starter
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Does it matter? I'm never going to drive it anywhere near 10A.

Jeff,
I know you have posted some of these drivers before, but do you have one with a 30V output?
Thanks in advance.

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Last edited by Darkblade48; 09-26-2015 at 03:50 PM. Reason: Please use the edit function for back to back posts to keep threads cleaner
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post #13 of 58 (permalink) Old 09-26-2015, 01:50 AM
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Meanwell LDD1500LW can provide 30volts @ 1500mA.


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post #14 of 58 (permalink) Old 09-26-2015, 01:40 PM Thread Starter
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Specs fit

Asking too much to drive this chip? Sure would decrease the cost?

3pcs DC 7 35V to 1 25 30V Constant Current LED Driver Power Supply - Newegg.com

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post #15 of 58 (permalink) Old 09-26-2015, 04:52 PM
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Asking too much to drive this chip? Sure would decrease the cost?

3pcs DC 7 35V to 1 25 30V Constant Current LED Driver Power Supply - Newegg.com
That is equiv to an LDD "puck" w/out dimming except by manual ma decreasing..

you still need a PS.


A Typhon for PWM programming is about $50.. and it is a recommended add on regardless..

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