DiY LEDs - How to Power Them
- Thread starter SupraSPL
- Start date
coreywebster
Well-Known Member
Where did you get that beast and what did it cost? Looks like a hell of surface area.
Levradus
Well-Known Member
40 euro apprx.
but Im confused as hell
I do not know where Im gonna find screws for the holes on it and bunch of stuff like these little shits Im messing with those issues right now please wish me a good luck to finish this project I have been struggling for a 2 two months
what about your view about the its passive capabilities ?
40cm long of this is it
but Im confused as hell
I do not know where Im gonna find screws for the holes on it and bunch of stuff like these little shits Im messing with those issues right now please wish me a good luck to finish this project I have been struggling for a 2 two months
what about your view about the its passive capabilities ?
40cm long of this is it
coreywebster
Well-Known Member
Good Luck!
My view is limited to the growmau5 vid in which he talks about the calculation based on surface area. However I am not sure if more things come into play, such as the grade of aluminium used.
Here is the vid anyway. You will need to measure every tooth and work out the full surface area.
Levradus
Well-Known Member
I watched all of those videos and read most of the articles here. Maybe some of the articles could not be understood by me but my heatsink fins has different shape not flat like vibrated water shape in out with tiny measures it definetely increase area
assuming flat and making calculations give me around 100-120 watt but with the cover and the shape of surface increase area can cause it up to where ?
does anyone know ?
assuming flat and making calculations give me around 100-120 watt but with the cover and the shape of surface increase area can cause it up to where ?
does anyone know ?
UKpeanuts
Well-Known Member
Someone check my math please:
footprint 2.4*1.2 = 2.88 m2
2.88*800 --- 800 PPFD is med/high intensity level.
2304 ppf total
2304/4.66 --- 4.66 is umols/ sec emitted by cxb/vero29 per par W
494 par W--- 494 par w total is required to meet 800ppfd in 2.4 x 1.2 tent
494/0.418 0.418 is efficinecy of v29@ 1.4A
1196 W Total watts required based on vero 29
1196/51
51W is total watts emitted per cob @ 1.4A
23 Number cobs required @ 1.4A to meet 800 PPFD in 1.2 x 2.4m2
footprint 2.4*1.2 = 2.88 m2
2.88*800 --- 800 PPFD is med/high intensity level.
2304 ppf total
2304/4.66 --- 4.66 is umols/ sec emitted by cxb/vero29 per par W
494 par W--- 494 par w total is required to meet 800ppfd in 2.4 x 1.2 tent
494/0.418 0.418 is efficinecy of v29@ 1.4A
1196 W Total watts required based on vero 29
1196/51
51W is total watts emitted per cob @ 1.4A
23 Number cobs required @ 1.4A to meet 800 PPFD in 1.2 x 2.4m2
Levradus
Well-Known Member
would you please tell me more about the green cable on your heatsinks side
I think its the one grounding how it works and how should I apply to my project is it a must or precaution can be taken ?
Airwalker16
Well-Known Member
Absolutely you must ground your driverm green cable from the plug goes to a mount on the heatsink
Airwalker16
Well-Known Member
Plug to wall ground wire>driver ground wire> spliced off with another wire that goes to heatsink or frame.
JorgeGonzales
Well-Known Member
100-120W sounds right to me, but remember those are heat watts, so maybe half of your total watts in a reasonably efficient built.
Levradus
Well-Known Member
surface around 1600cm2(up and down surface )+9520(fins surface) =11120
11120 /110 = 100
assuming it is %56 efficient gives me 227 total wattages
well @JorgeGonzales thank you for reminding me the heat watts point
then right after I found the screws proper to mount my led's to heatsink;
-I will mount them on heatsink
-solder all in cobs and monos seperately in series.
-give proper lenght to negative and positive ends of series because this heatsink heavy as cow I dont wanna put drivers weight on it..
-connect drivers same colours together through plugs same colours.
-( probably I should do this one at first : opening holes on the corners to use steel wire to hang it )
I already put all my money on the big parts now struggling with the small parts I dont wanna mess it up tomorrow I will find screws and let you know whats goin on
thank you all for your kind helps.
11120 /110 = 100
assuming it is %56 efficient gives me 227 total wattages
well @JorgeGonzales thank you for reminding me the heat watts point
then right after I found the screws proper to mount my led's to heatsink;
-I will mount them on heatsink
-solder all in cobs and monos seperately in series.
-give proper lenght to negative and positive ends of series because this heatsink heavy as cow I dont wanna put drivers weight on it..
-connect drivers same colours together through plugs same colours.
-( probably I should do this one at first : opening holes on the corners to use steel wire to hang it )
I already put all my money on the big parts now struggling with the small parts I dont wanna mess it up tomorrow I will find screws and let you know whats goin on
thank you all for your kind helps.
5x CXB3590 3500k $200
5x Ideal 50-2303CR $15
5x Ideal 50-2300AN $10
5x 180mm pin fin heatisnk$100
5x reflector's
1x Meanwell HLG-240H-C1400B$70
Do I need 180mm pin fin heatsinks or can I go smaller?
Anything else you guys recommend to change or just order away?
Is there anything else Cree is coming out with that I should wait for?
5x Ideal 50-2303CR $15
5x Ideal 50-2300AN $10
5x 180mm pin fin heatisnk$100
5x reflector's
1x Meanwell HLG-240H-C1400B$70
Do I need 180mm pin fin heatsinks or can I go smaller?
Anything else you guys recommend to change or just order away?
Is there anything else Cree is coming out with that I should wait for?
jeepster1993
Well-Known Member
This is basically my light.
You could use smaller heatsinks if you want. My light is made with 120mm sinks.
You need thermal interface paste.
You also need a pot for the dimmer on the driver ($1).
Oh wow 120mm? Awesome feedback, I'll look at some slightly smaller ones and save some coin.
Didn't even think about thermal paste thanks for that.
I imagine the dimmer is optional. Any specific ones you can link to that'll work for reference so I know what kind to get?
jeepster1993
Well-Known Member
The 120mm sinks are a bit hard to find, I think they're a very popular size.
I think you NEED the pot. That is a dimable driver and I think it needs the pot to complete the circuit.
Expert I am not.
It is a 10K pot. Common and available(Radio Shack, Amazon...)
I think you NEED the pot. That is a dimable driver and I think it needs the pot to complete the circuit.
Expert I am not.
It is a 10K pot. Common and available(Radio Shack, Amazon...)
Perfect I'll order one along with everything else.
Have you heard anything about new CREE COBs? I read in another thread that a rep mentioned something new coming out. I'm trying to wait to see what it is, but idk if that's just a rumor either
jeepster1993
Well-Known Member
Yeah...
Some are already saying the cree 3590's are so last year.
The thing about "state of the art" is it is a moving target. You wait 3 months, almost an entire growing cycle, for the newest/best. Then Citizen has something new about to be released, wait for that??? another growing cycle gone.
Take the plunge.
Some are already saying the cree 3590's are so last year.
The thing about "state of the art" is it is a moving target. You wait 3 months, almost an entire growing cycle, for the newest/best. Then Citizen has something new about to be released, wait for that??? another growing cycle gone.
Take the plunge.
jeepster1993
Well-Known Member
Mine...
Very nice!!! I have more of a horizontal growing space. I'm still finishing up my soil grow so I'm not in an immediate rush. I plan to buy the lights in the fall and start a dwc grow.Mine...