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Hi guys,i'm new to the Led subject and i have some questions about my Project. I want to build my own diy grow lamp.My Problem is that i'm not sure if the calculation is wrong or not. My other question is are there some alternatives instead of my choosen led's.LED from China all in all $18 for the LED`S for 60 LED's. Here is the link of the LED's : https://de.aliexpress.com/item/10-st-ck-UMAKED-High-Power-1-Watt-3-Watt-LED-Chips-Lampe-Licht-SMD-Warm/32847256118.html?spm=a2g0x.search0104.3.43.48e34ec4bEGrJX&transAbTest=ae803_3&ws_ab_test=searchweb0_0%2Csearchweb201602_9_10065_10068_10547_319_317_10548_10696_10084_453_10083_454_10618_10304_10307_10820_10821_537_10302_536_10902_10843_10059_10884_10887_321_322_10103%2Csearchweb201603_59%2CppcSwitch_0&algo_pvid=f5cff3e2-8f46-41ac-ae2b-e1457b82ac3b&algo_expid=f5cff3e2-8f46-41ac-ae2b-e1457b82ac3b-66x 1w blue led (15-25lm) (300mA-350mA) (3,0V -3,2V)18x 1w red led (40-50lm) (300mA-350mA) (3,0V -3,2V) If you know some LED alternatives within the pricerange of 20$ for all LED's:Blue needs to be 450nmand Red 650nmThis Driver i would buy:MW LPV-35-24 ... LED-Driver, 36 W, 24 V DC, 1500 mA.So the Resistor should be around 50 Ohm.I would choose a parallel circuit with a Series circuit.The Example belove.If you have some better opinions about a diy grow led please let it me know.Thanks for your help.
Hi if i use the 3w 700mA leds, could i use a driver with max 700ma for one row or do i need some more output like 800mA?For this example i will not use the voltage of the led and driver. Driver:MW APC-35-700
Thank for your help!If u look on the video above he set all of his Leds in one row. There are blues and also Red LED's in and i'm sure they use different voltages as u said. I also checked the data sheet of the LEDs and u right about the specification.So how he can manage all his LED in only one row?
Also i only need 700mA Driver for 700mA led's? I rad about a prozentage about 10%-20% above the max of 700mA. So the Driver should have around 800mA? I'm right?(Sorry for asking again but im confused about it)
Hi there i have one more question.I have choosen two different LED manufactorer.The First one are the chinese no Name LED with 3W and the seconds are from Osram a well know manufactorer. 3W Deep Red 660nm 2.4-2.6v 700mA 60-70lm3w royal blue 440-445nm 3.2-3.6v 700mA 30-40lm(I cant find any lumen specification or how to calculate the mole)High Power LED OSRAM OSLON® SSL 80 660nm hyper 3WHigh Power LED OSRAM OSLON® SSL 80 451 nm deep blue 3WWho of them are better? I know its a stupid question but maybe someone tested both of them.
The blue-red combo it is most useful for chlorophyll only but there is a lot more.Check this: https://en.wikipedia.org/wiki/Photosynthetically_active_radiation#Yield_photon_flux
... I don't see why red and blue LEDs won't do...
Quote from: Zero999 on March 16, 2019, 07:55:37 am... I don't see why red and blue LEDs won't do...It will look like in a whorehouse . I had a DIY blue-red combo few years ago. Full spectrum is the only way.And you won't be able to find most efficient blue and red LEDs. All the efficiency development is focused on white LED. And efficiency is the most important factor there is.