BuddyColas
Well-Known Member
I'm not Stephenj37826, but I have spent a few nights at a Holiday Inn.
You get that number by taking 100K/the number of Meanwell power supplies you want to control.
DIY with Quantum Boards
- Thread starter robincnn
- Start date
You get that number by taking 100K/the number of Meanwell power supplies you want to control.
AtterStiga
Well-Known Member
Apologies, I get lost in all the pages of all the cool threads I'm following. How much will the new heatsink cost compared to the old one? How much will it weigh and how hard can the boards be driven on them? So hyped on getting these for veg, and maybe even for flower.
pop22
Well-Known Member
Nutes and Nugs
Well-Known Member
I see, One to control all three supplies.
If using only one driver it would still be 100k?
I'll be running 3 boards in parallel with the "( HLG-120H-C1400 with 2 or 3 or 4 boards for 170 Watts)"
I have a 100k pot hooked up now and it doesnt completely dim the panels though I didnt expect it to either.
I used an Audio taper and not Linear from an old TV control if it matters.
MMJ Dreaming 99
Well-Known Member
LOL! You are so mean - teasing us. Ha ha. I think you QB Board guys are using photoshop.
MMJ Dreaming 99
Well-Known Member
Money for nothing and buds for free.
Well almost for free if by using QB Boards you don't have to drop in a 5 ton A/C unit to cool down HPS lights.
Freaking Gavitas or any DE are like having "installed microwave ovens" from the song.
Stephenj37826
Well-Known Member
You divide 100 by the number of drivers you are using together. 50kohm for 2, 33kohm for 3, 25kohm for 4. So on.
bassman999
Well-Known Member
It wont dim to zero, but around 10% I believe
10% is still bright esp since as current drops the leds get more efficient
BuddyColas
Well-Known Member
Yes, one driver would use a 100K pot. And if you bought one, go for the linear taper.
I can tell you that a 50K works great on 2 drivers. For all practical purposes just taking a volt meter and putting it across the control leads gives you the percentage of power you are sending to the cobs/QBs.
I like to turn it all the way down when I am trimming and checking things out...much easier on the eyes...then full ahead with the photon torpedoes!
bassman999
Well-Known Member
Same with full dim during in tent time, and for pictures
robincnn
Well-Known Member
The old Slate 1 heastink was $14.75
The new heavier Slate 2 will be around $19.75
The longer 3x board size Slate 1 around $40-$45
The Slate 2 is designed for 1400mA use or for 1050mA-1400mA with grow spaces having less airflow.
Website has been updated with new lm/w numbers based on AZ and A1 Voltage bin. The values represent min and max.
Will update website after testing each batch.
https://northerngrowlights.com/pages/engineering
robincnn
Well-Known Member
https://www.rollitup.org/t/meanwell-led-drivers-3-in-1-dimming-function.838760/
Single driver 100K ohm.
Multiple Driver 100K ohm/ (number of driver)
If you use 100K pot with 3 drivers then 0-33K ohm will give you dimming at 1/3 way it will be 100%. rest 2/3 rotation will not change intensity.
Use linear taper. Audio taper will give non linear dimming.
I always add a resistor in series with pot. 10% the value of pot. This is to limit min to 10%
https://www.rollitup.org/t/meanwell-led-drivers-3-in-1-dimming-function.838760/
Check meanwell datasheets they have nothing below 10% and meanwell are not dim to zero (not sure about new 400+W HLG)
with 100K ohm audio taper on 3 drivers you will get 100% around 2/3 of the way. last 1/3 rotation useless.
Nutes and Nugs
Well-Known Member
I'm only using 1 driver but with 3 panels in parallel but I understand what youre talking about.
Still building my frame but will put the kill-a-watt on the audio tapper to see how far off it tracks. I t seemed
fairly linear to the eye last test but its hard to do with all those lumens flying around.
I'll swap out the audio taper pot and add a 10K resistor in series since I'm waiting on the flower room to finish up in the next week or two.
Thanks for a great product and tech support.
Budzbuddha
Well-Known Member
Plant update - Blue Dream - Gorilla Glue and Bubble Bomb
QB is killin it .... My plants act like they were on steroids. Intense growth filling up tent .
Had to move out a smaller candy dream because of leaves blowing up.
The Quantum Board Refit is doing extremely well for a SINGLE panel build.
So very happy with this design.
Buds are nugging up and GG is preflower / Bubble is still vegging and stocky.
I LST those to to let more PHOTON GOODNESS IN.
QB is killin it .... My plants act like they were on steroids. Intense growth filling up tent .
Had to move out a smaller candy dream because of leaves blowing up.
The Quantum Board Refit is doing extremely well for a SINGLE panel build.
So very happy with this design.
Buds are nugging up and GG is preflower / Bubble is still vegging and stocky.
I LST those to to let more PHOTON GOODNESS IN.
robincnn
Well-Known Member
Eyes have antilog response just like ears.
So log(audio) taper will appear linear to eyes.
Nature is not a fan of linear response
MMJ Dreaming 99
Well-Known Member
OMG. Amazing. How many days has it been since you put them under the QB? 6 days?
The test for me was can they flower well and produce buds and weight. Looking pretty amazing to me.
I wonder how much weight this one board can pull?
What would be comparable to this one small board in this growth/flowering we are seeing here? A 600 watt HPS or 400 Watt HPS. This is really impressive.
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Budzbuddha
Well-Known Member
Yeah i cant remember when i first turned on panel ( i think around dec. 26 ) she was just out of sexxing/preflower. I had a Blue coral in there before with her ( grew huge ) but i found out is a stubborn " Auto " and actually is in another room being force flowered under 12/12. The other 2 plants ( GG and BB ) are out growing space.
I plan a SCROG grow next under QB - seems that is the best way to control space within tent. But i believe i could do a solo grow with one plant centralized in middle and would think my lone single panel could do very well. That blue dream has been stuck in that corner since using panel and even from there..... it is unreal on even light spread within tent.
I dont plan on optics with any future builds ... Just gonna let her rip.