DiY LEDs - How to Power Them

fragileassassin

fragileassassin

Well-Known Member
MedMonkey said:
That's what I ended up doing. Is it unsafe to run with the 50k pot? Is that the reason wattage was lower than it should be? From the wiring diagram I posted it is wired in series and I should be getting more than 107w (2 qb288 v1 boards and a hlg-320h-c2100b). Will have a 100k pot tomorrow.
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I use these digital dimmers with my drivers. I run 2x 320h-2800b on each dimmer.
Only downside is that they dont turn back on if they lose power

DC12-24V 8A PWM LED Dimmer Controller with 12-Key Wireless IR Remote for LED Light Strip, Rigid Light Bar: Amazon.com: Tools & Home Improvement

DC12-24V 8A PWM LED Dimmer Controller with 12-Key Wireless IR Remote for LED Light Strip, Rigid Light Bar: Amazon.com: Tools & Home Improvement
www.amazon.com
 
MedMonkey

MedMonkey

Active Member
So how about safety using the 50k pot in place of the 100k for one driver? It's running full blast without a pot, but it's really too much light for the 2x4 right now and needs to be turned down a little. Have a 100k coming so it's not a big deal, but just wondering about how safe it is or isnt to use the 50k instead. Is that why it was only giving 107w?
 
shimbob

shimbob

Well-Known Member
MedMonkey said:
So how about safety using the 50k pot in place of the 100k for one driver? It's running full blast without a pot, but it's really too much light for the 2x4 right now and needs to be turned down a little. Have a 100k coming so it's not a big deal, but just wondering about how safe it is or isnt to use the 50k instead. Is that why it was only giving 107w?
Click to expand...
a 50Kohm pot at full blast is electrically equivalent to a 100kohm at half. it's fine.
 
DonPetro

DonPetro

Well-Known Member
Hey guys i'm thinking about doing a strip build and need some input. The idea is a passively cooled fixture good for a 4x4 tent. Thinking 12- 1120mm EB gen2 3500k strips paired with an HLG-480H-42A? Is this a good option or is there a better driver out there? Also, i just wanted to confirm that at 950mA these strips would be fine on 1/8" aluminum flat bar?
What is the typical spacing of strips for best light spread? Im starting to think 12 strips might be too much and i would end up with a fixture that is almost 4'x4'. Maybe just 9 strips and scale back the driver?
 
Armyofsprout

Armyofsprout

Well-Known Member
I’m trying to do a DIY HLG 600W Rspec and get full power out of it. Will a Hlg 600-H 54A work in parallel with 4x QB288 rspec boards?

I have a HLG 600-H 48A that I bought on accident and was underpowered and shorted out. How many boards can I power with the 48A? Because I’ll use it for a separate light with maybe 2x boards if that will work.
 
Airwalker16

Airwalker16

Well-Known Member
Armyofsprout said:
I’m trying to do a DIY HLG 600W Rspec and get full power out of it. Will a Hlg 600-H 54A work in parallel with 4x QB288 rspec boards?

I have a HLG 600-H 48A that I bought on accident and was underpowered and shorted out. How many boards can I power with the 48A? Because I’ll use it for a separate light with maybe 2x boards if that will work.
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There are 48v strips you could use. Or 24V ones in series sets of 2.
 
The-Fallen

The-Fallen

Member
Hi

I'm just planning my first LED build, a veg light for a 4x4.

I am looking to use 1120mm EB gen2 5000k strips as they're cheap as hell, I did want the 4000k but none in stock.

The below drivers are available to me cheap atm, will either fit my needs? and if so how many strips per driver?
HLG-185H-C1050B
HLG-120H-C700B

Thanks for any help.
 
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Airwalker16

Airwalker16

Well-Known Member
The-Fallen said:
Hi

I'm just planning my first LED build, a veg light for a 4x4.

I am looking to use 1120mm EB gen2 5000k strips as they're cheap as hell, I did want the 4000k but none in stock.

The below drivers are available to me cheap atm, will either fit my needs? and if so how many strips per driver?
HLG-185H-C1050B
HLG-120H-C700B

Thanks for any help.
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Mix some 3000K ones in with the 5000K. I've always found that 5K really is more blue than needed for cannabis.
I'd literally do half and half at LEAST 1 of every 3 strips be 3000K.
 
Armyofsprout

Armyofsprout

Well-Known Member
Airwalker16 said:
There are 48v strips you could use. Or 24V ones in series sets of 2.
Click to expand...
Will the 54v work fine in parallel for the 4x QB288 boards with a full 600W draw? I want a meanwell driver with a built in dimmer and I only found one that must be run in parallel.

I may just sell the 48V and buy another like 54V 320W driver for veg.

I know nothng on the math of this. Would I be able to get 300W out of two QB288 boards or would I need at least 3? I want to DIY a 320W bSpec for veg.
 
fragileassassin

fragileassassin

Well-Known Member
Armyofsprout said:
Will the 54v work fine in parallel for the 4x QB288 boards with a full 600W draw? I want a meanwell driver with a built in dimmer and I only found one that must be run in parallel.

I may just sell the 48V and buy another like 54V 320W driver for veg.

I know nothng on the math of this. Would I be able to get 300W out of two QB288 boards or would I need at least 3? I want to DIY a 320W bSpec for veg.
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The 600H-54 would work for 4 boards in parallel and run at 560w but they are nearly $200.
2 boards per 240w driver or 3 with a 320w driver.
The 288s are 140w max. You probably COULD get 300w out of 2 but youd be over drivnig them.
if you want to copy the 600. IMO use 6 288 boards driven by 2x 320h-c2100s cut 3 boards on the same driver for veg.
Edit nvm: thats why i picked the 2100. The 320-2100 will run up to 154v so you can run 3 in series and they all get 2100ma

QB288 V2 & V2 Rspec Board Guide

High efficiency boards designed for Horticulture Lighting projects. No Thermal Interface Material is required between the QB board and flat metal heatsink.
horticulturelightinggroup.com horticulturelightinggroup.com
 
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Armyofsprout

Armyofsprout

Well-Known Member
fragileassassin said:
The 600H-54 would work for 4 boards in parallel and run at 560w but they are nearly $200.
2 boards per 240w driver or 3 with a 320w driver.
The 288s are 140w max. You probably COULD get 300w out of 2 but youd be over drivnig them.
if you want to copy the 600. IMO use 6 288 boards driven by 2x 320h-c2100s cut 3 boards on the same driver for veg.
Edit nvm: thats why i picked the 2100. The 320-2100 will run up to 154v so you can run 3 in series and they all get 2100ma

QB288 V2 & V2 Rspec Board Guide

High efficiency boards designed for Horticulture Lighting projects. No Thermal Interface Material is required between the QB board and flat metal heatsink.
horticulturelightinggroup.com horticulturelightinggroup.com
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The setup I think I want to run is two 4x4 tents. I’m conflicted right now because I’m deciding if I wanna do Autos or not.

In one tent I wanna do a 260w with two Qb288 Bspec boards I think for veg/auto

in another tent I will do a 600W rspec setup.

I have 4 rspec qb 288 sitting around I just need to get another Heatsink and the correct 54v driver. I need dimmable in order to use it through a full cycle without being too strong at first. I could use a cheaper driver and add a dimmer but I don’t feel like playing with resistors and pots. Is it easy?

also I think I’ll sell my 48V and get a proper 54V to connect two Bspec boards in series for veg. I probably wouldn’t worry about a dimmer with those I’d just hang it high for seedlings at first.
 
Airwalker16

Airwalker16

Well-Known Member
Armyofsprout said:
The setup I think I want to run is two 4x4 tents. I’m conflicted right now because I’m deciding if I wanna do Autos or not.

In one tent I wanna do a 260w with two Qb288 Bspec boards I think for veg/auto

in another tent I will do a 600W rspec setup.

I have 4 rspec qb 288 sitting around I just need to get another Heatsink and the correct 54v driver. I need dimmable in order to use it through a full cycle without being too strong at first. I could use a cheaper driver and add a dimmer but I don’t feel like playing with resistors and pots. Is it easy?

also I think I’ll sell my 48V and get a proper 54V to connect two Bspec boards in series for veg. I probably wouldn’t worry about a dimmer with those I’d just hang it high for seedlings at first.
Click to expand...
Pots are incredibly easy to wire to a driver. But if you get an A version, 50% dimming g is still able to be done via the internal potentiometer.
 
fragileassassin

fragileassassin

Well-Known Member
Armyofsprout said:
The setup I think I want to run is two 4x4 tents. I’m conflicted right now because I’m deciding if I wanna do Autos or not.

In one tent I wanna do a 260w with two Qb288 Bspec boards I think for veg/auto

in another tent I will do a 600W rspec setup.

I have 4 rspec qb 288 sitting around I just need to get another Heatsink and the correct 54v driver. I need dimmable in order to use it through a full cycle without being too strong at first. I could use a cheaper driver and add a dimmer but I don’t feel like playing with resistors and pots. Is it easy?

also I think I’ll sell my 48V and get a proper 54V to connect two Bspec boards in series for veg. I probably wouldn’t worry about a dimmer with those I’d just hang it high for seedlings at first.
Click to expand...
I posted the digital ones I use with my B versions a little up page 217. Super easy to wire.
Downside of the digital ones is they wont turn back on if you have a power outage. A cheap UPS is a solution, ive had 1 unannounced outage in 2 years and dont leave much so I havent got one yet. I really like the digital ones I use because they all respond to the same remote and I can dim everything at the same time at a button push.
About to add 2 more drivers to mine and they will go on a third of the same dimmer. I have my lights split into two pairs. I have 2x 320s wired to 1 power cord and 1 dimmer on each side.
 
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