Hi all!
Soooo... I bought a voltage regulator off of amazon, and it is outputting 5.33V instead of the advertised 5.0V. I looked up the max voltage for the WS2812 LEDs that im powering from it, and it is 5.3V! So, the voltage regulator will just fry my strips 
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Any ideas on how to lower the voltage by 0.33V? Diodes in series? Im pretty sure a LDO wouldn't work for such a small amount 
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Here's the link:
Thanks in advance!
A Schottky diode or two would work.
The Vf is 0.2 to 0.3 volts; the strip would be fine with 4.9 votes.
a7
Your link does not give much information. They gave no indication of the tolerance. Also what is the accuracy of your volt meter. Does that converter need a minimum load? They state in the ad: "if you are not 100% satisfied with our service or our products, simply contact us. We are always at the side of our customers to support and continuously seek new ways to improve", contact them and exchange for another. This is one of the reasons we state use links to technical information as the market place sellers do not give enough information.
Isn't this the tolerance?
Output voltage: 5±0.25V
@alto777 thanks! That was what I was thinking, but I wasn't sure if it would cause power issues like not enough current or something. Its 14x WS2812 LEDs, so thats 0.84A, plus the rest of the small electronics.
@gilshultz Yeah, that is the problem with Amazon sellers; every product has not nearly enough information to be helpful. I haven't tried contacting them yet, so I probably should try that. Also, I dont have any technical links for that product 
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@jim-p I think that is the tolerance, which means that the device is outside its stated value by 0.07V.
Thanks, It is. I was not interested in the adds so I quit looking when I found the blank specific info. That Output voltage: 5±0.25V shows it is out of tolerance and defective, therefore should be sent back. I am assuming his meter is correct, he has a good brand. I am not familiar with azon adds. I do not use azon because information is either missing or in this case hidden below stuff I have no interest in.
I'm quite sure my meter is correct; I have this one:
I think the 5.3V is a misprint because all of the operating conditions are at 4.5-5.5 which is more typical for a 5V device
Electrical Characteristics（TA=-20～+70℃，VDD=4.5～5.5V,VSS=0V,unless otherwise specified）
I'll ask out loud, so to speak, if any of you would be surprised that with even a relatively small load the voltage would soon enough be closer to 5 volts?
I didn't see a minimum load like is often stated for PC power supplies, but with nothing at all on the output I wouldn't be surprised by a slight over voltage.
a7
HI,
What you will probably find is when you load up the regulated output it will drop by a few tenths of volts, hence the Output voltage: 5±0.25V.
If you use a Schottky or other method to drop the voltage, when you have loaded the supply up, check the output at the power supply.
Tom.. 
Thanks @TomGeorge , ill try that!
What I find curious (and what partially led to my conclusion) is when I powered my strips from the regulator, they all stopped working, but when I had powered them with my computer USB before that, they worked just fine! Kinda strange .
Edit:
Actually I just checked again, I bought this strip: https://www.dfrobot.com/product-1080.html
And it says 3.3V to 6V for them. Also, they're WS2811 apparently, not WS2812 
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That strip consumes 1A per meter and it's 3m long, so you should have at least a 4A supply.
Your 2A supply won't do.
FYI:
They are actually WS2812s, which utilize the WS2811 driver ICs.
Oh hmmm.
I’m only using 14 pixels, so that’s 0.84A on white.
So you bought a 3m long strip and cut off 14 leds?
Yep, two 5-pixel strips and one 4-pixel; all tied together.
5+5+4=14.
Your right! 
So everything is working OK now?
Yeah... kinda. Im going to add a Schottky diode later and see if it works with the 48V regulator, instead of just on my computer USB.
But haven't we come to the conclusion the the diode isn't actually needed?
Yes, but something is still an issue, because when I use the 48V regulator, the LEDs fry. When I use my computer USB though, they work fine. I already replaced all my strips once since I used the regulator last time, so I am afraid to use the regulator again just to have them fried again.
Then there is something else wrong.
We established the the LEDs will work with voltages up to 6V, so 5.33V should be OK.
If they fried with the 5.33V then they might also fry with 5V.
Are you sure he power supply polarity is corect?