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Akumasensei85
11-17-2010, 05:26 PM
So I watched a helicopter make 5 rounds past my where I live, intervals of 20 mins in between the next, I shut off my my hps and left on my t5s. between 2-3 pass-by. Now I 'm wondering should I just go Led cuz they have low heat sigs, what type should i buy? I've looked on eBay and seen quite a few for $90 bucks, a grow and a flower also. But I like how much heat my hps puts out and in the winter my room gets cold regardless of what I have on up here. its over 100yrs. and tips on these LED's? should I go that route?

rudy2010
11-17-2010, 07:18 PM
Basically the state of LED's is that they are acceptable for vegging but not really adequate for budding regardless of manufacturers claims.

People on this site have successfully used them for budding. The technology keeps "improving" but it seems like they just keep adding a different color of LED. The price is really expensive for the latest and greatest so you need to do lots of research before going down that road with something that is still expensive but is inadequate.

The temperature and power useage are both much better and the plants can even touch the light without burning.

khyberkitsune
11-17-2010, 07:19 PM
Check my LED Ahoy! journal and see what results I've got. Also, check out Weezard, Stra8outtaweed, and many others here that are using LEDs. We're quite happy with what LED alone can do, and LED + lower powered HPS makes for great cannabis.

Akumasensei85
11-17-2010, 07:26 PM
Check my LED Ahoy! journal and see what results I've got. Also, check out Weezard, Stra8outtaweed, and many others here that are using LEDs. We're quite happy with what LED alone can do, and LED + lower powered HPS makes for great cannabis.

just the person I wanted to talk to about this. I read a lot of your thread about LED, i'm interested and I hooked. I've done lots of research and I wanna purchase the awesome LED's. You personally have enlightened me on the subject of LED. I have questions, concerns so if you can my Yahoo Id tag is the_Legion85, add me so we can talk and discuss these matters. Thank you.

steezyd
11-17-2010, 07:36 PM
you can also get Infa red barrier...its expensive mylar that blocks heat signatures...

Discount Hydroponics - Block-IR (http://www.discount-hydro.com/productdisp.php?pid=552&navid=33)

headshake
11-17-2010, 08:44 PM
on June 11, 2001, the Supreme Court has ruled that infrared scanning CANNOT be used on an individuals house without a warrant!

US Supreme Court Rules High Tech Scanning Unconstitutional without Warrant
Commentary on: Kyllo v. US
by Earth
Jul 12, 2001
Kyllo v. US
CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT
[Decided June 11, 2001]

* Full Decision Texts
* AP Story
* Reuters Story
* ACLU's Amicus Brief

In a 5-4 ruling on June 11, 2001, the US Supreme Court ruled that the use of thermal imaging (infrared) scanners to look at homes for evidence of crimes is unconstitutional without a warrant. The majority issued a broad decision, suggesting that other types of high-tech gear which reduce privacy in the home are also disallowed without a warrant. This decision reverses a set of flip-flopped 9th Circuit Appeals Court decisions where the 9th Circuit first found in favor of Kyllo and then, after a judge resigned, it reheard the case and decided against Kyllo.

The decision was made by an unusual coalition of justices, with Scalia writing the majority opinion, quoting from elements of the ACLU's amicus brief in favor of increased Constitutional rights and Stevens, in dissent, arguing that the Right to Privacy does not protect against scanning devices. Two of the most conservative justices, Scalia and Thomas joined with the more liberal Ginsburg, Breyer, and Souter and the liberal Stevens and moderate Kennedy joined with Rehnquist and O'Connor in dissent.

Scalia's broad opinion argues that technology has weakened the privacy of citizens and "The question we confront today is what limits there are upon this power of technology to shrink the realm of guaranteed privacy. To withdraw protection of this minimum expectation would be to permit police technology to erode the privacy guaranteed by the Fourth Amendment." Justice Scalia and the majority opinion then proposes a standard for checking the constitutionality of search/detection equipment:

We think that obtaining by sense-enhancing technology any information regarding the interior of the home that could not otherwise have been obtained without physical "intrusion into a constitutionally protected area",(Silverman, 365 U.S., at 512), constitutes a search-at least where (as here) the technology in question is not in general public use.

This proposed rule mirrors that proposed by the ACLU's amicus (friend of the court) brief and, if it becomes a nationwide standard, would offer a great deal of privacy protection to citizens of the U.S.

The government prosecutors and the dissent argue that the use of thermal scanners does not require a warrant because it only looks at things which are in 'public view'. They argue for a distinction between "through-the-wall" and "off-the-wall": where 'through' constitutes a search where 'off' would not. I was unable to decipher what these distinctions would actually mean and think that Stevens is perhaps somewhat confused. The argument seem to be based on the faulty assumption that the technology for scanning inside boxes, homes, or other private areas are somehow limited in type and scope by the antiquated concept of "inside" and "outside": technologies available now are able to see through walls, record conversations inside buildings, read computer monitors and keyboards from the signals they put off, etc. Which of these are 'off-the-wall' and which 'through-the-wall' ? Is the argument of the dissent actually that anything that is detectable without putting equipment 'inside' a space fair game?

What Stevens's argument seems to lead to is that we all would need to line our homes with layers of lead, thermal insulation, and noise-deadening material in order to reasonably expect privacy from the prying gaze of government agents with up to date technology.

Stevens offers the argument that thermal imaging is distinct from using listening devices because the level of detail is so much different:

Surely, there is a significant difference between the general and well-settled expectation that strangers will not have direct access to the contents of private communications, on the one hand, and the rather theoretical expectation that an occasional homeowner would even care if anybody noticed the relative amounts of heat emanating from the walls of his house, on the other.

But Stevens appears to be ignoring the fact that many homeowners probably would, in fact, choose to keep rogue government agents (without cause enough for a warrant from a judge) from scanning their homes to determine what devices or activities ar used inside, even if the information is general and vague. While there is certainly a difference between intercepting communications and general scanning, the Orwellian overtones to the possibility that the government could use any technology it wanted to spy on citizens is what this case seems all about.

The other primary government argument is that the technology used is too blunt to be able to detect with specificity "private activities or things". A classic element of 4th Amendment law is the concept of sexual or "intimate" things which are regarded as receiving the highest level of protection. While its certainly true that the devices they were using were quite crude compared to some of the listening and viewing technologies which are just becoming available and will be in the future, I'm certain that Kyllo wanted to keep his cannabis garden private and had it inside in order to make it so.

Scalia, however, argues that the distinction drawn by the Dissent can't be a workable standard because there is no direct connection between the resolution and precision of the scanning and the intimacy or privacy of the details exposed:

To begin with, there is no necessary connection between the sophistication of the surveillance equipment and the "intimacy" of the details that it observes--which means that one cannot say (and the police cannot be assured) that use of the relatively crude equipment at issue here will always be lawful. The Agema Thermovision 210 might disclose, for example, at what hour each night the lady of the house takes her daily sauna and bath-a detail that many would consider "intimate"; and a much more sophisticated system might detect nothing more intimate than the fact that someone left a closet light on.

Stevens, in his dissent, suggests a different, looser standard:

I would not erect a constitutional impediment to the use of sense-enhancing technology unless it provides its user with the functional equivalent of actual presence in the area being searched.

Stevens ends his dissent with an agreement that the technology threatens privacy, but argues that the protection of privacy should be left up to the legislature and not decided by the Court in this way. It will be interesting to see whether the legislatures in the US choose to address the problem of technology reducing privacy and how the courts use this ruling.

Erowid Law Vaults : Supreme Court : Infrared Scanning Unconstitutional (Kyllo v US) (http://www.erowid.org/freedom/courts/supreme/supreme_case2_comment1.shtml)

so if they are flying over and scanning your house, they already have their ducks in a row and the LEDs won't matter, they have already started making a case against you.


-shake

khyberkitsune
11-18-2010, 04:01 AM
just the person I wanted to talk to about this. I read a lot of your thread about LED, i'm interested and I hooked. I've done lots of research and I wanna purchase the awesome LED's. You personally have enlightened me on the subject of LED. I have questions, concerns so if you can my Yahoo Id tag is the_Legion85, add me so we can talk and discuss these matters. Thank you.

I've added you on Yahoo! (I'm using the same nickname as here) so just waiting on your authorization.

bobhead
11-23-2010, 02:19 AM
I just added LED to my grow room.
I did so much research and still couldn't find my answers.
So I just went ahead and bought a 300w LED. I'll see for myself.

Weezard
02-03-2011, 01:37 AM
on June 11, 2001, the Supreme Court has ruled that infrared scanning CANNOT be used on an individuals house without a warrant!

US Supreme Court Rules High Tech Scanning Unconstitutional without Warrant
Commentary on: Kyllo v. US
by Earth
Jul 12, 2001
Kyllo v. US
CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT
[Decided June 11, 2001]

* Full Decision Texts
* AP Story
* Reuters Story
* ACLU's Amicus Brief

In a 5-4 ruling on June 11, 2001, the US Supreme Court ruled that the use of thermal imaging (infrared) scanners to look at homes for evidence of crimes is unconstitutional without a warrant. The majority issued a broad decision, suggesting that other types of high-tech gear which reduce privacy in the home are also disallowed without a warrant. This decision reverses a set of flip-flopped 9th Circuit Appeals Court decisions where the 9th Circuit first found in favor of Kyllo and then, after a judge resigned, it reheard the case and decided against Kyllo.

The decision was made by an unusual coalition of justices, with Scalia writing the majority opinion, quoting from elements of the ACLU's amicus brief in favor of increased Constitutional rights and Stevens, in dissent, arguing that the Right to Privacy does not protect against scanning devices. Two of the most conservative justices, Scalia and Thomas joined with the more liberal Ginsburg, Breyer, and Souter and the liberal Stevens and moderate Kennedy joined with Rehnquist and O'Connor in dissent.

Scalia's broad opinion argues that technology has weakened the privacy of citizens and "The question we confront today is what limits there are upon this power of technology to shrink the realm of guaranteed privacy. To withdraw protection of this minimum expectation would be to permit police technology to erode the privacy guaranteed by the Fourth Amendment." Justice Scalia and the majority opinion then proposes a standard for checking the constitutionality of search/detection equipment:

We think that obtaining by sense-enhancing technology any information regarding the interior of the home that could not otherwise have been obtained without physical "intrusion into a constitutionally protected area",(Silverman, 365 U.S., at 512), constitutes a search-at least where (as here) the technology in question is not in general public use.

This proposed rule mirrors that proposed by the ACLU's amicus (friend of the court) brief and, if it becomes a nationwide standard, would offer a great deal of privacy protection to citizens of the U.S.

The government prosecutors and the dissent argue that the use of thermal scanners does not require a warrant because it only looks at things which are in 'public view'. They argue for a distinction between "through-the-wall" and "off-the-wall": where 'through' constitutes a search where 'off' would not. I was unable to decipher what these distinctions would actually mean and think that Stevens is perhaps somewhat confused. The argument seem to be based on the faulty assumption that the technology for scanning inside boxes, homes, or other private areas are somehow limited in type and scope by the antiquated concept of "inside" and "outside": technologies available now are able to see through walls, record conversations inside buildings, read computer monitors and keyboards from the signals they put off, etc. Which of these are 'off-the-wall' and which 'through-the-wall' ? Is the argument of the dissent actually that anything that is detectable without putting equipment 'inside' a space fair game?

What Stevens's argument seems to lead to is that we all would need to line our homes with layers of lead, thermal insulation, and noise-deadening material in order to reasonably expect privacy from the prying gaze of government agents with up to date technology.

Stevens offers the argument that thermal imaging is distinct from using listening devices because the level of detail is so much different:

Surely, there is a significant difference between the general and well-settled expectation that strangers will not have direct access to the contents of private communications, on the one hand, and the rather theoretical expectation that an occasional homeowner would even care if anybody noticed the relative amounts of heat emanating from the walls of his house, on the other.

But Stevens appears to be ignoring the fact that many homeowners probably would, in fact, choose to keep rogue government agents (without cause enough for a warrant from a judge) from scanning their homes to determine what devices or activities ar used inside, even if the information is general and vague. While there is certainly a difference between intercepting communications and general scanning, the Orwellian overtones to the possibility that the government could use any technology it wanted to spy on citizens is what this case seems all about.

The other primary government argument is that the technology used is too blunt to be able to detect with specificity "private activities or things". A classic element of 4th Amendment law is the concept of sexual or "intimate" things which are regarded as receiving the highest level of protection. While its certainly true that the devices they were using were quite crude compared to some of the listening and viewing technologies which are just becoming available and will be in the future, I'm certain that Kyllo wanted to keep his cannabis garden private and had it inside in order to make it so.

Scalia, however, argues that the distinction drawn by the Dissent can't be a workable standard because there is no direct connection between the resolution and precision of the scanning and the intimacy or privacy of the details exposed:

To begin with, there is no necessary connection between the sophistication of the surveillance equipment and the "intimacy" of the details that it observes--which means that one cannot say (and the police cannot be assured) that use of the relatively crude equipment at issue here will always be lawful. The Agema Thermovision 210 might disclose, for example, at what hour each night the lady of the house takes her daily sauna and bath-a detail that many would consider "intimate"; and a much more sophisticated system might detect nothing more intimate than the fact that someone left a closet light on.

Stevens, in his dissent, suggests a different, looser standard:

I would not erect a constitutional impediment to the use of sense-enhancing technology unless it provides its user with the functional equivalent of actual presence in the area being searched.

Stevens ends his dissent with an agreement that the technology threatens privacy, but argues that the protection of privacy should be left up to the legislature and not decided by the Court in this way. It will be interesting to see whether the legislatures in the US choose to address the problem of technology reducing privacy and how the courts use this ruling.

Erowid Law Vaults : Supreme Court : Infrared Scanning Unconstitutional (Kyllo v US) (http://www.erowid.org/freedom/courts/supreme/supreme_case2_comment1.shtml)

so if they are flying over and scanning your house, they already have their ducks in a row and the LEDs won't matter, they have already started making a case against you.


-shake

Hell of an exit line, 'shake!
Didja get kidnapped or sumpin'?
Life intrude?
Hadda play a grown-up?
Ennui?
(I could go on, ya know?):)

To be succinct, Your absence does not go un-noticed.:(

Aloha,
Weeze

danzor123
02-04-2011, 07:22 PM
I just added LED to my grow room.
I did so much research and still couldn't find my answers.
So I just went ahead and bought a 300w LED. I'll see for myself.


Cheap chinese models that people are buying on ebay suck, I did a lot of research and found this.

YouTube - ‪90w LED Grow Light Comparison - Lighthouse Hydro VOL 1 , HTG , Bridgelux , Head To Head‬‏ (http://www.youtube.com/watch?v=k6o9BTexx20)

I tried 1 at first because they are a little pricey compared to the tri-band
and quad-band, but well worth the $$. 16k lumens sitting right on top of the plants is the ticket!!! I now have 3 and they totally kick ass!

khyberkitsune
02-05-2011, 02:20 AM
Double Post - the proper one with quote below.

khyberkitsune
02-05-2011, 02:22 AM
Cheap chinese models that people are buying on ebay suck, I did a lot of research and found this.

YouTube - ‪90w LED Grow Light Comparison - Lighthouse Hydro VOL 1 , HTG , Bridgelux , Head To Head‬‏ (http://www.youtube.com/watch?v=k6o9BTexx20)

I tried 1 at first because they are a little pricey compared to the tri-band
and quad-band, but well worth the $$. 16k lumens sitting right on top of the plants is the ticket!!! I now have 3 and they totally kick ass!

That youtube video - as soon as I heard 'lux' I turned it off.

Photon flux density is what you look for with LED - anybody advertising or measuring by lux has no clue what they're doing or saying, almost guaranteed.

Also, I've recently heard that many LED sellers are going "240w only consumes 120w" and let me tell you this - if you get one of those units, take it apart, you will find that you're paying way more for less. You're getting 240w of diodes, but only pushing about 120-140w of power through them (one guy in a thread said he took it apart, read the labels, did the math, three drivers only pushing about 4w each in the panel.) I think it was the Lighthouse Hydro Blackstar, in fact.

Such deceptive and misleading advertising. I hate it with a passion.

canniwhatsis
02-05-2011, 04:02 AM
That youtube video - as soon as I heard 'lux' I turned it off.

Photon flux density is what you look for with LED - anybody advertising or measuring by lux has no clue what they're doing or saying, almost guaranteed.

Also, I've recently heard that many LED sellers are going "240w only consumes 120w" and let me tell you this - if you get one of those units, take it apart, you will find that you're paying way more for less. You're getting 240w of diodes, but only pushing about 120-140w of power through them (one guy in a thread said he took it apart, read the labels, did the math, three drivers only pushing about 4w each in the panel.) I think it was the Lighthouse Hydro Blackstar, in fact.

Such deceptive and misleading advertising. I hate it with a passion.

I think part of the problem is that very few growers know shit about LED's, the spectrum or intensity of light they produce or anything! Myself included :o (tho I've at least got a clue)

So, many in the industry would seek to abuse that lack of knowledge for personal gain.

I don't agree with the ethics either, but "There is a fool born every minuet" and there are those who target those fools.

silent leprechaun
10-31-2011, 11:56 PM
Hey guys,
I think LED are getting a bad rap because of all the rip-off Chinese junk on ebay and other similar sites.
I did a lot of research before buying and Im happy so far. The veg stage has been unreal. Massive burst of growth.
I will be blooming in 5 days. You can see my grow on here: LED Grow log testing the Pro-Grow 260.
To be fair I don't know what the blooming power will be like but if its anything like the veg I'm in for a surprise !

You can also find it here LED LOGGER (http://ledlogger.wordpress.com/)

This is just my third grow ever so I might make mistakes.

I also commented on the LUX produced by the led and took some readings.
But as khyberkitsune said, its the photon flux density I should be focusing on.

Anyway, we are all learning.

So far I love the LED light I'm using. Let me know what you think.

take care

williboy
11-27-2011, 06:41 AM
Has anyone been looking at some of the latest grow tests with some of the various LEDs? Some are looking very impressive. I really like the modular construction of one of the manufacutors, unlike some, if a part is needed they send it, you replace it, and you're not down time at all. Been growing a while in NorCal outside, but I think I'll try these very soon, indoors. At least they be out of sight of the deer and 'other' herbivores!

bigsby
11-27-2011, 01:27 PM
I've been growing with 2x 150w Welthink Wex-C150 bars for both veg and flower - 1 in veg and I add the 2nd for flower. As a veg light it's great. I couldn't be happier. As a flower light the results have been mixed. It definitely flowers my ladies with decent results but I don't get the density that I see others achieving with HPS/MH lights, and they take 1 - 2 weeks longer to finish. That said, strain and growing skill are factors to be considered. I'm still learning to be sure. What I will say is that Welthink stands behind their product. I had an issue with poor workmanship in one of the lights and they moved very quickly to deal with it.

If you are going to grow LED and invest that kind of $$ do your homework and buy from a reputable company. 3w diodes minimum and be sure it is true 3w and not some fraction of 3w... The biggest benefits I see are lower electrical draw, cooler temps, and longevity. Although note that while the diodes my be rated for 20,000 hours, the components that drive them will most likely die well before the diodes so the longevity argument has some holes in it to be sure.

bigsby
12-02-2011, 10:30 PM
My issue with Welthink is now resolved. It took 10 days start to finish. I get the light back tomorrow. They took 1 day to evaluate it and decided it would be too much effort to fix so they sent me a new one. It's ~18 months old. Service was excellent. Try that with some random UFO! I love my Welthink Wex-C150s. Now I love them even more!