So here goes my 1st DIY.
I will provide as much help as i can if someone gets stuck or has a question.
(or rewright the whole thing if people can't understand it.)
DIY L.E.D grow panels.
Things you will need
Leds Red/blue 24 red/ 96 blue.
Resistors (Get .1/2W less heat)
Power supply. AC/DC
Pref board 4x6 (circuit board)
wire black and red get at lest 120 volt wire.18 gage.
Things to understand Ohms law i won’t explain it. How current flows. How to solder.
Things to know, plants primarily use red and blue light bands.
Also I do understand that you may have questions about formulas, I will do my best to answer these but most of this is Ohms law. I will give you a simple example .
This is a design for my 3nd light my 2st is in use and work. My 1st light burned up thank to faulty information provided by the manufacture. this is my Veg light for my mother im building its 80% blue 20% red. Bloom is just 80% red 20% blue.
Look for Blue leds with at lest 12000 mcd with a wavelength of 450 area, for red at lest 12000 mcd and a wavelength of 650. Yes i know you can add other colors but i have tested orange leds in my
Don't buy them if they have very wide view angels we're looking for 15-30 max. 20-25 is perfect.
lights and honestly i liked the yeilds better with more red or more blue.
Quick tip Cannabis doesn’t see green light so you can wire in some green leds if you want to but you will need to install a switch.
400 - 520 nm
This range includes violet, blue, and green bands. Peak absorption by chlorophyll occurs, and a strong influence on photosynthesis. (promotes vegetative growth)
610 - 720 nm
This is the red band. Large amount of absorption by chlorophyll occurs, and most significant influence on photosynthesis. (promotes flowering and budding)
My specs for my New red Leds as below.
Technical Summary. Packageø 5mmPackagingbulk. Dimensions ø5mmLead Spacing2.54mm ColorRed. Brightness7,000~15,000mcd Wavelength615~640nm LensWaterclear, WhiteViewing Angle15~25°Forward Voltage1.8~2.6VCurrent Rating20mA
1. AC/DC power supply I’m currently using a Sony 19.5 V 4.5 A laptop charger.
Lets get started.
Cut your power adaptor off and attach some wire black and red. White is positive black is negative.
Current flows from positive to negative and our resistor needs to be at the end or negative side.
Led 6 set.png
This shows a single row of L.E.D.
This picture i have 2 sets of 6 leds one set blue other is red.
If testing with this power supply and one light at a time, you need a 825 Ohm Resistor.
For blue lights testing 6 at a time you will need a 82 Ohm resistor.
To find the resistor we need take your source volts 19.5 minus our led combined forward voltage
(FV is 3.0 so 3x6) 18
19.5-18=1.5 now divide by .02 which comes 75 Ohms needs, an 82 Ohm resistor will work just fine and no heat.
Red is a 360 ohm. it gets a little warm i have bad specs for my older red leds.
After testing comes trimming your lights cut them so the positive prong is still longer.
(note due to lack information on my red Leds they are not in my pattern.)
Now we are ready to build the light itself. take your circuit board and lay out your pattern.
Don't mix blue and red together in the same row unless you know the specs and are able to figure out the resistor you need other wise you will burn it up.
(forgot to take a picture before i soldered sorry)
After you put all your leds in the pattern. flip over the whole board and slightly bend the L.E.D prongs so they are going to be easier to solder also stay in place make sure they are flat to the board.
Put 6 in a row solder them together with a resistor at the end. just keep going till your done . Solder two peices of wire, one on positive and one negative side. These will be your power rails.
Turn it around and do the pattern on the other side.
You will easily be able to fit at lest 120 LED on this 4x6 board.
Attach your power supply and your good to go.
For my 1st and 2nd light i used a plastic tupperware box. They work great.