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high power led grow lights m.k2

by:Mingfa Tech     2020-01-10
I used to play planting plants under led lights and I thought I would build a bigger system with high power LED. . . . . . . . .
If I look like a dead horse at whip flo, I\'m really sorry that this will be my last Guide to Growing things with LED. . . . . honest.
I haven\'t found any commercial units using high power LEDs (
Then, I haven\'t really seen it again, and I like the illusion of keeping me original :))
So I think it may be a big difference from my other attempts worth posting.
I might say better that unless you have a solid knowledge of electronics and have experience using mains power, you really shouldn\'t try this approach.
There will also be high pressure near the wet environment, which is usually not the best idea.
It also uses very bright light, and if you stare at it, it may do something nasty to your eyes, if you can read the article, you may not spend much time staring at the Sun/bright objects, so hopefully common sense will prevail.
It\'s basically safe, don\'t try it unless you\'re actively aware of what you\'re doing.
What you need is: 1x large bathtub.
1x high current 5 v/10 v power supply.
4x3 w high power red LED.
1x3 w high power blue LED.
2x STP36NF06L MOSFET. 2x 100K 0. 25W resistor. 2x 0. 47R 3 w resistor. 2x BC549B.
1x aluminum box.
1x power lead.
Some wire.
The theory behind this is: plants are green, so they reflect the green light, which means they don\'t use it for photosynthesis or anything else they might do.
If we only plant plants in red and blue lights (
Their colors are absorbed)
So we don\'t waste energy by giving the green light.
This means not only saving energy and money, but it also looks like the plants are jumping disco.
Do you really need any other reason to build it? ?
Here it all may or may not be better explained: in general, they are not the best behavior, they need some way to limit the current, otherwise they have the habit of dying.
For smaller LEDs, resistance can be used in series, but when you start to handle LED with higher power, too much energy is consumed in the resistance and things become inefficient and hot.
There are several ways to limit the current, almost all of which are discussed in this best note: Because it contains some great electronic theory, it is a gold mine for information, so it is well worth reading.
I will use the constant current source 1 circuit in the above instructions.
Here is the circuit diagram ,(
Note: I did not draw this myself, it was extracted directly from the instructions above, I think it is OK because it is in the attribute non-
Business share license, but let me know if it\'s not cool)
The rated power of the led I am using is 700 mA, so using the given equation we get about 0 R3 value. 47ohms.
I\'m going to build two of them, one supplying 4 red LEDs in series from a 10 v power supply and the other supplying a single blue LEDs from a 5 v power supply.
It\'s time to get the soldering iron out and start making it!
Weld 2 current limiters on a bread plate (
Or etching some PCB if you feel like it)
And test them to make sure there\'s nothing too hot.
Note: The Zina diode you can see on my breadboard ended up exploding (
I don\'t know why, but I have a habit of doing this)
So it was omitted in the final version.
The second picture shows the 4 red LED tested circuits in my bedroom at night and all the lights are off.
They were really bright and lit up my whole room.
This is an extra bonus step for a very small number of people who have been labeled 47 ohm resistors instead of 0.
Like me, 47 ohm resistor, dissatisfied with the ridiculous price of mappers, in fact it actually includes going outside to catch the bus to mappers, just need to explain to the person behind the counter what the resistor is, then sell the wrong resistor anyway, but don\'t realize it until you get home.
Therefore, the above situation is infinitely repeated in the Earth Pig Day-crossing game.
Enough of this stupidity, here\'s how I changed the value of the 47 ohm resistor to 0. 47 ohms. 1. )
Slowly crush the ceramic coating around the resistance with pliers, do not scratch it, otherwise it will damage the very thin wire. 2. )
After removing all the outer coating, unlock the thin line from one side of the metal end cap. 3. )
Connect 2 end caps directly with wires and measure their resistance.
If it doesn\'t fit, cross the other connection directly with another thin line.
This can be very irritating. 4. )
Wrap it up with tapenote: this is a very stupid idea, the resistor can no longer handle 3 w, it gets very hot when used in the circuit, I do this because I am desperate, just take it as a point of interest.
The LED gets very hot, there is no sort of radiator, they will die on you, you may need a bigger radiator than you think, I chose the metal box I used to encapsulate the electronics as the radiator, it was quite a big meal but the weather was surprisingly hot and I would suggest you use the bigger one.
The led I got has a star radiator attached to them, which makes it easier to install them, I marked some fairly random locations, and used some small bolts to fix the position of the LED, if you happen to have any lies, it is a good idea to use some hot paste to improve the heat conduction.
You may need to install a radiator on the MOSFET of the current limiting circuit.
The problem now is that you can\'t have two MOSFETs connected to the same radiator because the labels tend to be at different voltages unless you can insulate them, you will end up with some serious short circuit and unstable behavior.
I made two aluminum radiators with a piece of plexiglass and then installed it in the box to make sure the radiator doesn\'t touch any part of the box. This set-
The bed gets very warm after a long period of use and I highly recommend using a larger radiator or some sort of cooling.
I chose to drill a few holes and use some plugs and sockets to connect the power to a box with lights and current limiting devices.
Then drill into the holes of the aluminum box and some nuts and bolts used to secure it on the cylinder head.
I was lucky enough to be able to pick up my power supply for 2.
JPG electronics from Chesterfield (50 (
They are really good, the shelves are full of random things).
It has some useful holes that I used to use to tie it to the lid as well.
When selecting the power supply, remember the current and voltage requirements and make sure that it is not too hot under load and properly protect the power supply from short-circuit/current spikes.
Remember, this will last for a long time!
You don\'t want anything on fire.
You will want to make sure nothing is too hot or exploding.
This is a common way for me to test things.
If it doesn\'t work, unplug it immediately and try to find the fault.
After a few seconds, unplug it and check to make sure nothing gets too hot and there is a smell of burning things.
Plug it in for 5 minutes if you can, keep checking constantly, assuming everything goes well, keep it for an hour, check regularly.
If it gets hot, you need a radiator for a larger LED or mosfet, or a strong radiatorUh, power.
If everything is OK, it may be OK to use.
To be safe, make sure you run the system for the first 24 hours or so in the house.
The first photo below shows the system running in my room at night, turning off the lights and pulling the curtains.
It really brightened my whole bedroom.
One strange thing to note is that there is no green light in the room, which means that the beer bottle looks black, which is a bit strange.
This is almost everything.
My original intention was to build a completely closed growth system using hydroponics, but I wanted to get this done in time for the LED challenge.
I\'ll probably make another note on how I\'m going to do it, but anyway there are a lot of decent people around the place.
Here are some of the potential improvements I will make in the future: The water culture method.
The fan blows on the plant and encourages thick stems to grow.
C02 producer (
Yeast, sugar, water).
There are larger radiators all around.
PWM light control using a micro controller.
Timer to turn the lights on and off.
Happy electric gardening! P.
I know what you\'re all thinking. . . . .
I\'m growing marijuana. I don\'t have it. Honest.
I do this because it interests me.
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