You'd better check that design is not patented by NASA, Roscosmos, JAXA, ESA and CSA or you'll have a Lawsuit on your hands!
2ft 3000k @ $4.82Can you link me to some of the EB's ? im gonna have to do some research and check the numbers .... Surely they are higher then the lm561b's im seeing.......im pretty sure they are as good as the samsungs but not 100% on that. (whatever series i was looking at a few weeks ago were 180 lm/w i think....so not a lm301 but very close)
your on the right track. 2 series will work.Hello everybody, new here, been lurking a while. Was planning on building some lights when i came across this thread, what a goldmine!
Just ordered these: SI-B8U152560WW M-series, 3500k, 14 watts for $0.83 /piece.
They are 24V and I have a couple 500w 48v power supplies, i should be able to wire the strips in groups of 2 in series right? I've seen it been discouraged but if the voltage drop is equal enough over the strips i don't see the problem? Any input?
Bakad! Me thinks theres a fellow scando behind that handleHello everybody, new here, been lurking a while. Was planning on building some lights when i came across this thread, what a goldmine!
Just ordered these: SI-B8U152560WW M-series, 3500k, 14 watts for $0.83 /piece.
They are 24V and I have a couple 500w 48v power supplies, i should be able to wire the strips in groups of 2 in series right? I've seen it been discouraged but if the voltage drop is equal enough over the strips i don't see the problem? Any input?
i dont "like" the wire im using but it should not be doing this. (18g solid) When i wired it the first way , the wires coming from the driver are short. doing it the other way , the wires are longer. The shortest wiring is where i lost volts/current. Thats why im so confused. If i run the wire all the way to the outside strips then it lights up fine. (2 ft pieces of wire vs 6" of wire)I would assume the resistance of the wires. Here's some info: https://hitlights.com/blogs/news/what-is-voltage-drop-or-why-are-my-strips-dimming
Shorter and thicker wires should solve it.
Sure is, swede hereBakad! Me thinks theres a fellow scando behind that handle
Im afraid the strips seems to be rated at 26V as per arrow. Some drivers have abit of extra headroom or voltage regulation so you mightt be in luck. The principle of 2 in series is sound though, and it also makkes connections easier, as well as being able to use one alu channel for sinking 2 strips. B
I don't exactly understand how your wiring. But if you rely on the strips for power transportation(the power being supplied through one strip to the next), that could be a problem since the traces of the pcbs are where your losses will be.i dont "like" the wire im using but it should not be doing this. (18g solid) When i wired it the first way , the wires coming from the driver are short. doing it the other way , the wires are longer. The shortest wiring is where i lost volts/current. Thats why im so confused. If i run the wire all the way to the outside strips then it lights up fine. (2 ft pieces of wire vs 6" of wire)
Thanks for the help sir
Thats exactly whats going on here. Thanks bud! i been talkin to another member and yea, im a confusing person .....but in the end im using the traces to supply each board causing a bunch of resistance.I don't exactly understand how your wiring. But if you rely on the strips for power transportation(the power being supplied through one strip to the next), that could be a problem since the traces of the pcbs are where your losses will be.
Bagarn! Have you grown much before? id seriously advice against so little height and actual volume, its like two cubic meter, smaller thana decent sized tent and youre wanting to put a thousand watts in there if i get you right. i also had ideas like that, i could imagine a grow space from litterally anything. that meter is going to mean about half a meter of actual plant space when you count pots, light takes up height and you need space between light and plants etc. you will also probably need some lolipopped space between the pot and the cannopy otherwise air movement will be limited, which means humidity and mold. it seems seriously overambitious. the only way i could see that work would be with one level and all the leds on whatever youll use as door, and then tall plants inside. but that means vegging really tall plants, before you flower, and im not sure how youd make a plant stretch like that with side light. They wont have an instinct to go up.Sure is, swede here
The psu's are PSP-500-48 and adjustable between 41-56V. I'm planning on driving the strips at 10w and use 80 of them for 2m². Is that way overkill do you think? Using dwc and co2. The space is a false wall 2m wide, 2m tall. 0.5m deep but two levels so 1m height for growing. Im ok with underdriving the leds even more but dont want to find myself in the future wishing for more light
This was and is my biggest fear. I see waaaay too many old hid heads having problems witgh the switch. Im on the right track with my thinking but i have no clue about vpd. The biggest thing i see is that folks used to hid are getting much more light in "most" of their area vs super high ppfd right in the middle. That has to = more food but thats all i can come up with.Read up a bit on vapour pressure deficit or you will fail with leds.
Are you using Coco? You should be fine as long as you don't try to run too much light with too little nutrientsis this going to make the plants use more cal or mag or both? or just an overall higher dose of food ? i do not wanna fall victim to the "calmag" game here on RIU.
soil. been doing it for years.Are you using Coco? You should be fine as long as you don't try to run too much light with too little nutrients
I ordered a few of their drivers. Will have them hooked up tomorrow night for a test runfound more cheap drivers. https://www.arrow.com/en/products/lne-24v150wdaa/delta-electronics
Hi getogrow, it seems you have worked out what's going on. In a parallel circuit as you've drawn the PCB trace does indeed carry the current and results in voltage losses due to the thin copper trace. There is not much you can do about this, as the first strip gets the correct 24V and then some of that voltage drops off as the first strip passes the current to the second strip and so on until the last strip in the series is getting maybe 22-23V which is visibly dimmer to the human eye. The longer the strips, the worse the voltage drop.your on the right track. 2 series will work.
As for voltage drop an such , i have a perfect example for yall and i need help to figure out why. maybe this will help you too.... heres a pic...i got 8 strips in parallel x 2 series and depending on where i put the wires makes them light up at a different current/brightness...
View attachment 4694731
I didnt draw out the whole setup but heres the picture: If i wire like this then all the outter strips gets less current/voltage then the inner strrips. ? not sure why... Now if i wire in series from the driver to the outside strips then it all looks equal. Whats going on here ?