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AusChristmasLighting 101 Manual
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101 display basics
Power requirements for WS2815 led strips
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[QUOTE="Notenoughlights, post: 125804, member: 25585"] rough calculations show at 100% 900 12v pixels at 100% will pull around 54A. This is just the most basic calculation, with the 60mA rating given by Ali sellers used to calculate. Yes you can still use the 30A power supply, assuming it is one of the legitimate Meanwell power supplies you should be ok up to around 25A (Never best to go full 100% load on a power supply) if it is one of the no-brand supplies, you may run into issues getting the full rating as a lot of those supplies can be "over rated" by the sellers, I've had that experience in the past. Injecting power may be required in the middle and the end if you were planning on running the entire strip in one length, so power at the first pixel, pixel 450 and pixel 900. Only injecting into the middle, or the end on their own would result in lights turning redder and redder the further they got from the injection point. If you had plans to run them in the 3 5 meter strips, you may find feeding each end with power would be sufficient as that is only 300 pixels, you may notice a little darkening in the middle, unless you use the WLED current limiting setting I mention below. Limiting power with WLED would be a good choice as you won't have the required output to drive all LED's at 100% white, WLED doesn't physically limit the current, but "calculates" how much current is being drawn and dims the lights down to a level that should stay below the threshold you have set, this is handy to limit the redder and redder issue I mentioned above. This is all done very fast and while it is noticeable, i.e 100% red will be a lot brighter than 100% white, it saves you having to add more power supplies and such should be more than appropriate for some bedroom ambient lighting. [/QUOTE]
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Power requirements for WS2815 led strips
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