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HOW TO BUILD AN LED GROWLIGHT

DIY LED GROWLIGHT INDOOR LIGHTING

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#41 JOEZEP

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Posted 31 January 2016 - 07:28 PM

 

 

welcome to the future my friend, we have been waiting for you =D

 

BTW I love seeing you guys adapting these builds, really makes me happy to see 

 

can u elaborate on what parts you used?

 

looks like the heatsink usa profile with how many leds? which driver? what currentz?( dont think u need to cool that heatsink with a fan if you are using 25 leds

I did get the 36" heatsink from heatsink USA. The rest of the parts I got from ledgroupbuy.com because I didnt want to wait for shipping from china. So far I am only running 15 LED's in parallel about 4 inches apart. They are running off a 52w dimmable Inventronics driver at a full 1.05A. I can easily add another 15 if needed but at this rate my overwintering plants are almost growing to fast. The reason for the 2 fans is that I am running these LED's at just about peek power. I want to make sure they woudnt burn out. However they probably dont even need to be there. I'm just an IT guy with lots of spare parts so I figured dual fans why not! The stand I made is from left over server rack pieces and screws mounted on some wooden legs from an old table. The best part is I actually made it adjustible so It can be raised up to accomodate growth.



#42 N8thaniel

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Posted 02 February 2016 - 03:49 AM

I did get the 36" heatsink from heatsink USA. The rest of the parts I got from ledgroupbuy.com because I didnt want to wait for shipping from china. So far I am only running 15 LED's in parallel about 4 inches apart. They are running off a 52w dimmable Inventronics driver at a full 1.05A. I can easily add another 15 if needed but at this rate my overwintering plants are almost growing to fast. The reason for the 2 fans is that I am running these LED's at just about peek power. I want to make sure they woudnt burn out. However they probably dont even need to be there. I'm just an IT guy with lots of spare parts so I figured dual fans why not! The stand I made is from left over server rack pieces and screws mounted on some wooden legs from an old table. The best part is I actually made it adjustible so It can be raised up to accomodate growth.

thats great there are some issues with runnaway current when wiring in paralel but seems you know what ur doing

yes fans are great-especially i like to get the pwm models and run them at 3-4v they r totally silent and move enough air to keep the sink ice cold


my grow thehotpepper.com/topic/58836-2016s-fresh-startledphotonfactory/


#43 GhostPepperz

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Posted 03 February 2016 - 01:40 AM

You know some of you pepper growers would make excellent Cannabis growers. Knowledge of proper lighting, good seeds, and soil mixture is very important with that plant as well.  


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#44 Gratefulseedsaver

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Posted 05 February 2016 - 09:05 AM

I'd like to THANK everyone for sharing their LED knowledge. AWESOME topic and information!!!

#45 louis-123

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Posted 08 February 2016 - 04:49 PM

 

 

first thing i suggest is try running the cpu @ 5v

if you can still hear it lets talk about other options

 

Finally made up my mind and ordered another vero29 (4000k to reach out in the blue spectrum a little more) with heatsink and 5v fan. Got a 36v 72w constant current driver from dealxtreme.

Should help the plants grow a little more. Iam planning on running this cob on a different timer, so that the blue (4000k) light turns on, then a few hours later the other timer turns on my 2 vero29 3000k, then they turn off and the blue is on a another 2 hours. To stimulate real daylight.  Interested to see how the plants will react...

 



#46 Nizztos

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Posted 27 April 2016 - 12:51 PM

Going to grow peppers and probably tomatoes indoors all season in a 4x4 tent. Mainly I want to experiment with different hydro systems just for fun.

 

A bit torn on lights but very much leaning towards a DIY LED system atm.

 

Looking at the mammoth in this thread but I guess I will probably need to expand on it a little to fit my area.

 

Couple of questions. I'm a truly lazy person and my peppers will be at different grow stages so I pretty much want to just keep my light at one position high enough for the plants to fully grow. Am I fooling myself or can this be done? I.e. will there be enough light several feet (5 at most) from the LEDs?

 

Are the vero13s the best bang for the buck or should I go with bigger COBs?

 

Are there Chinese suppliers for the entire shopping cart in the mammoth? Don't care much for the 25% extra tax I will have to pay on top of the digikey amount. Shipping form China typically seem to let me avoid paying taxes and I don't mind the wait.



#47 N8thaniel

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Posted 28 April 2016 - 06:38 AM

Going to grow peppers and probably tomatoes indoors all season in a 4x4 tent. Mainly I want to experiment with different hydro systems just for fun.

 

A bit torn on lights but very much leaning towards a DIY LED system atm.

 

Looking at the mammoth in this thread but I guess I will probably need to expand on it a little to fit my area.

 

Couple of questions. I'm a truly lazy person and my peppers will be at different grow stages so I pretty much want to just keep my light at one position high enough for the plants to fully grow. Am I fooling myself or can this be done? I.e. will there be enough light several feet (5 at most) from the LEDs?

 

Are the vero13s the best bang for the buck or should I go with bigger COBs?

 

Are there Chinese suppliers for the entire shopping cart in the mammoth? Don't care much for the 25% extra tax I will have to pay on top of the digikey amount. Shipping form China typically seem to let me avoid paying taxes and I don't mind the wait.

if you go to fastech you can pick up the cxa2530s-you will need to mount them with holders(aliexpress) or kapton tape fastetch

 

the rest will be the same

 

if u dont want to raise or lower lights just put the smaller ones on smth so they r closer to the light( duh!)


my grow thehotpepper.com/topic/58836-2016s-fresh-startledphotonfactory/


#48 Flaming Youth

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Posted 28 April 2016 - 01:18 PM

Great thread:-) When I got my led panel a few years ago some of the panels could cause burning of the plants. So the company sent out these parts to lower the power from 290 to 180 watts.
My panel works great so I never switched out parts. I still have these,new.
I have 5 of them,what exactly are they?

IMG_20160428_140634_zpskj6dyrpl.jpg

#49 N8thaniel

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Posted 28 April 2016 - 03:18 PM

Great thread:-) When I got my led panel a few years ago some of the panels could cause burning of the plants. So the company sent out these parts to lower the power from 290 to 180 watts.
My panel works great so I never switched out parts. I still have these,new.
I have 5 of them,what exactly are they?

IMG_20160428_140634_zpskj6dyrpl.jpg

 

the are drivers-ballests for leds

 

i guess they run at a lower current than u have now


my grow thehotpepper.com/topic/58836-2016s-fresh-startledphotonfactory/


#50 Flaming Youth

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Posted 28 April 2016 - 04:03 PM

Could I use these in a diy project?

#51 Nizztos

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Posted 29 April 2016 - 01:26 AM

if you go to fastech you can pick up the cxa2530s-you will need to mount them with holders(aliexpress) or kapton tape fastetch

 

the rest will be the same

 

if u dont want to raise or lower lights just put the smaller ones on smth so they r closer to the light( duh!)

 

Thanks for the info!

Will the heat sinks from fastech really be enough for the cxa2530s? I figure I would drive them with higher amps as well (around 600mA?). I could of course drive them with the 300mA driver but that seems like a waste of their potential.

Seems like heat sinks and appropriate drivers will be what I would need to hunt for.

 

Raising the plants would be an option but they will be in hydro systems that will be quite hard to move from the floor (at least if I want to move them during the grow). So it will be easier to move the lights :) Since this is just for fun I can just test things and see how it works out. If more light is needed I will have to face the music and ensure I can move them (*cry*).



#52 N8thaniel

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Posted 29 April 2016 - 02:41 AM

 

Thanks for the info!

Will the heat sinks from fastech really be enough for the cxa2530s? I figure I would drive them with higher amps as well (around 600mA?). I could of course drive them with the 300mA driver but that seems like a waste of their potential.

Seems like heat sinks and appropriate drivers will be what I would need to hunt for.

 

Raising the plants would be an option but they will be in hydro systems that will be quite hard to move from the floor (at least if I want to move them during the grow). So it will be easier to move the lights :) Since this is just for fun I can just test things and see how it works out. If more light is needed I will have to face the music and ensure I can move them (*cry*).

 

 

 

the heatsinks from fastech will work on a single cxa2530 up to  about 500mA

if you want to run them harder i suggest you combine those sinks into one loner one and attactch a fan or look for other sink options

 

you could put a single cob at 900mA on that sink with a fan

https://www.fasttech...0008212/1734700

 

 

aliexpress has a few sinks if u look

Could I use these in a diy project?

 

yes although without knowing the current and voltage output it will be tricky to match to chips


my grow thehotpepper.com/topic/58836-2016s-fresh-startledphotonfactory/


#53 Nizztos

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Posted 29 April 2016 - 02:48 AM

An option for heat sinks would be a CPU-cooler with fan. Is there a resource somewhere where one can see what size/type CPU-cooler can be used for a particular LED?

I know the cheap coolers/fans are risky (fan failure) but replacing failing LEDs, if the fan fails, is not that expensive compared to other parts.



#54 A Spicy English Cheapskate

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Posted 29 April 2016 - 04:15 AM

An option for heat sinks would be a CPU-cooler with fan. Is there a resource somewhere where one can see what size/type CPU-cooler can be used for a particular LED?

I know the cheap coolers/fans are risky (fan failure) but replacing failing LEDs, if the fan fails, is not that expensive compared to other parts.

CPU coolers normally have a max wattage rating. Even a  relatively cheap one like an arctic 11 is rated up to 85w.


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#55 grispa72

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Posted 30 April 2016 - 12:09 AM

I built a COB lamp using CPU's cooler I took from Amazon. Arctic cooler with fan can dissipate 100W heat made by a 100W COB. Of course not all the power goes for heat. It works well!

Paolo

#56 Nizztos

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Posted 01 May 2016 - 03:39 AM

I lucked out. A local store had the 70W versions of the Arctic for sale so ordered 10 at around $60 shipping included.

 

Have had a really hard time deciding how to build the rest of the system though but then I found out about http://pct.cree.com/dt/index.html

 

Had a bit of an epiphany and came up with this:

Will buy the 2530s from fastech and the cheap 300mA driver, also fastech, mentioned earlier in this thread. Under driving them like that will give me about 15k lumens (I think the COBs might have been T2s). I will use alu L-profiles to connect the coolers in pairs (maybe a foot between them) and get adjustable hanging thingies. Anyone know a good source? The ones I have seen are not all that expensive but needing 20 of them it adds up and I don't know what they are called so having a hard time searching for them.

 

With this system I can then just change the drivers later on to get up to 50k lumens (albeit at poor performance). It will also be easy to upgrade COBs as the next step. The only disadvantage is that it doesn't lend itself to using drivers that drive more than two COBs altough that is mainly a matter of aesthetics when running the cables as I could connect one driver to multiple "fixtures".

 

Yet to figure out how to drive the fans and how to fasten the COBs to the sinks. Driving the fans will be trivial I just need to decide on a driver. For the COBs I'm thinking of using tape. Anyone know the name of the type of tape I need?

 

Anyone with more experience have a suggestion on a change I should do in that setup (provided the description was clear enough)?



#57 N8thaniel

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Posted 01 May 2016 - 11:55 AM

https://www.fasttech...roducts/1195401


my grow thehotpepper.com/topic/58836-2016s-fresh-startledphotonfactory/


#58 Nizztos

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Posted 01 May 2016 - 01:05 PM

 

Thanks! One stop shopping :)



#59 N8thaniel

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Posted 03 May 2016 - 04:14 AM

 

Thanks! One stop shopping :)

 

 

yeah they also have the cxa 2530s in 5000k 4000k and 3000k now

 

pretty good for us

 

cpu coolers are pretty much overkill for anything below 50w fyi


my grow thehotpepper.com/topic/58836-2016s-fresh-startledphotonfactory/


#60 Nizztos

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Posted 03 May 2016 - 11:23 AM

 

 

yeah they also have the cxa 2530s in 5000k 4000k and 3000k now

 

pretty good for us

 

cpu coolers are pretty much overkill for anything below 50w fyi

 

They might be overkill but it was actually the least expensive option for me.
Even with the low amperage I will be using I don't think I can run them passive but at least they give me room to grow :)

 

Not so sure I liked the options on the 2530s though. Made it much harder to decide for me (for some reason I wanted just one type) and the 4000k was a worse bin than the 3000k. Ended up with 4000k anyway as I plan to also grow some lettuce under the same ligth.







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