• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

DIY with Quantum Boards

Budzbuddha

Budzbuddha

Well-Known Member
Hempy quantums...

Plants have really stepped on the gas since last week .
Still 18/6 ( 3000/4000k mix )
GH Maxigrow ( powder )
@5.9

They are heavy drinkers and am a every other day water/feed .
I also did some light crop and LST on them .
Quantums have kept canopy heights level ( where some other lights with hot spots might have looked different ) .....

Gonna see what another week looks like before deciding on flip ....
The Thrive Alive Red is added to in between watering once a week .

2E4BBC41-4F27-4381-AD6C-D6F1085F0BF9.jpeg
 
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shimz

Well-Known Member
pop22 said:
An HLG480H-C3500b will give you about 180 watts per board. Remember what I said though, the heatsink run passive are only good to about 150-160 watts. You'll need to design and build a mount for fans over the heatsinks. An HLG320H-C1400b will run them at about 150 watts each.
Click to expand...
I would like to add that with the 480 rec he'd have to parallel the current and series for the 320.
 
CoB_nUt

CoB_nUt

Well-Known Member
Question. Hlg240-H-c2100 is supposed to put out 240 watts correct? I'm only getting 220 watts at the wall(kilowatt meter ), I disconnected the pot thinking maybe it was a bad solder job, no dice. Still 240 with the pot off.
Only thing I can think of next is the wire I used for the AC is slightly smaller than the wires+housing of the drivers AC outputs.
Any thoughts. Gonna go hack up another bigger AC plug to match the mean wells dimensions.
 
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shimz

Well-Known Member
Sounds about right: 4 qb120 boards in series, should be around 23.5V per board, so 94V total times your constant current of 2.1A=197.4W. Taking into account driver and wire losses, 220W at the plug is within spec.
 
CoB_nUt

CoB_nUt

Well-Known Member
Ahh ok thanks @shimz. Thought I was loosing my mind. I went thru every connection and even replaced the AC wire.. I thought the 240 would give me 240 watts. My bad.
 
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shimz

Well-Known Member
Heh, no biggie @CoB_nUt this stuff isn't exactly straightforward. If you had a series voltage right at the max of this driver (119V) only then can you get the full rating. 119x2.1=239.9
 
CoB_nUt

CoB_nUt

Well-Known Member
shimz said:
Heh, no biggie @CoB_nUt this stuff isn't exactly straightforward. If you had a series voltage right at the max of this driver (119V) only then can you get the full rating. 119x2.1=239.9
Click to expand...
I don't quite understand. How do I get a series voltage right at the max of my driver to get the full rating?
 
S

shimz

Well-Known Member
CoB_nUt said:
I don't quite understand. How do I get a series voltage right at the max of my driver to get the full rating?
Click to expand...
Well, there is something you could do to increase your series voltage: Add a board! 23.5x5 is 117.5V which would get you 117.5x2.1=246.75W. Those watts would then be shared by 5 boards instead of 4, but your overall system efficiency goes up nicely.
 
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CoB_nUt

CoB_nUt

Well-Known Member
shimz said:
Well, there is something you could do to increase your series voltage: Add a board! 23.5x5 is 117.5V which would get you 117.5x2.1=246.75W. Those watts would then be shared by 5 boards instead of 4, but your overall system efficiency goes up nicely.
Click to expand...
Ha!!! Ahhhh ok....understood. Thanks again @ shimz
 
dannykay

dannykay

Well-Known Member
Lavenders harvested, dried and went to the jars to start the cure.
If anyone is on the lookout for a fantastic skunky strain, with insane aroma and flavor, Lavender by soma seeds would be a perfect choise.


Things are looking okay for the mix in tray#2,
Most of them are week 4-5 with the exception of liberty haze (right side of pic) that should be ready next week.

Finally found the time to hook up a qb120 board to the propagator space

Small veg tent

Larger veg tent


Stay safe
 
Budzbuddha

Budzbuddha

Well-Known Member
Hempy Quantum- We got Bush

Hempy gas pedal smashed to floor these plants are getting all junglefied in no time !
Running 320watts at moment . Growth is hella fast. All green , woody branches.
Just a wee bit LST on them .....

Ridiculously pungent , so got to get that addressed.
Maxigrow is on point ... 1 tsp per gallon water , nothing else.

Flipping might be sooner 5han later.

That Runt BD really came around ..... it was that one leaf mutant . But now looks like a champ.

ADE08633-03D6-47F8-A3B6-85AD2BB9FBCE.jpeg 0D07D3D3-45C5-4E8A-90B1-84FE817D4598.jpeg 70EBD2F8-521D-43C1-A63C-15F582E702F5.jpeg D53E5297-33E8-4013-9BFF-A49EB05B5ADA.jpeg B16D3BB3-2565-4D4B-892A-BB505FED7064.jpeg
 
pop22

pop22

Well-Known Member
that's not how drivers work. you get the max Amperage to each board that the driver is rated for. If its say, a HLG320H-C1400, each board gets 1400 ma, at the board rated voltage, a QB288 running at 1400 ma uses 47.7 volts, giving a watt consumption of 66.8 per board.

HLKG has a chart with all this info for each board.

Simple answer, the watt rating of a driver only indicates its maximum potential, not what it will supply to your boards. This is why its a good Idea to read the info HLG provides so you can make the best match with a driver for your set up. You need to read the driver data sheets also. They are easy to read and help you determine how many boards/cobs you can run on it.


CoB_nUt said:
I don't quite understand. How do I get a series voltage right at the max of my driver to get the full rating?
Click to expand...
 
Stephenj37826

Stephenj37826

Well-Known Member
shimz said:
Heh, no biggie @CoB_nUt this stuff isn't exactly straightforward. If you had a series voltage right at the max of this driver (119V) only then can you get the full rating. 119x2.1=239.9
Click to expand...
CoB_nUt said:
I don't quite understand. How do I get a series voltage right at the max of my driver to get the full rating?
Click to expand...
pop22 said:
that's not how drivers work. you get the max Amperage to each board that the driver is rated for. If its say, a HLG320H-C1400, each board gets 1400 ma, at the board rated voltage, a QB288 running at 1400 ma uses 47.7 volts, giving a watt consumption of 66.8 per board.

HLKG has a chart with all this info for each board.

Simple answer, the watt rating of a driver only indicates its maximum potential, not what it will supply to your boards. This is why its a good Idea to read the info HLG provides so you can make the best match with a driver for your set up. You need to read the driver data sheets also. They are easy to read and help you determine how many boards/cobs you can run on it.
Click to expand...

Most Meanwell HLG series drivers give 5-10% more current than they are rated at. Just an FYI.

It is also a good idea to leave a few volts on the driver. 95% utilization is about the most one should try for. Running them at full utilization can lead to premature failure depending on driver case Temps.
 
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