Parallel Strip Build Tool

Since a lot of people have been looking for help on their strip builds, I figured it’d probably be helpful to have a calculator just for this. Now that we’re seeing more and more of these systems being built, it has become apparent that running all strips in parallel is the way to go – it’s expandable, the math is easier for large numbers of strips, and wiring is less confusing, so I’m only doing this for parallel builds. Check out the parallel strip build tool below!

A few notes:

  • Voltages are based on diode temps of 50C and Samsung strip voltage is based on A1 bin diodes.
  • Lumen estimates for Samsung are based on S6 bin diodes
  • The “MINIMUM HLG CV DRIVER” box spits out the smallest HLG series constant voltage driver you can get away with. Remember, you can always use a bigger driver as long as it’s the same voltage (e.g. – if you only need an HLG-100H-24, you could buy an HLG-320H-24 and run your strips just fine, with the ability to expand your system in the future).
  • Be sure to split your wiring up if you’re using a big driver so you don’t exceed the current rating of your strip connectors. It’s far better to use Wagos than to daisy chain strips together with their built-in connectors.

Oh – if you’re mobile, try rotating your phone to landscape mode if the tool is looking screwy in portrait.


  1. Hey LG,

    It didn’t take a genius to see it. Obviously, right? cuz we talked about these strips, you know – perfectly-spaced and soldered-by-the-manufacturer, up-to-4 FT-long… if you can’t get your hands on a QB or Sun/Wavy or jeez, we need an f’n acronym, anyway – if this is what you have access to, it’s not a bad option: no real thermal management and infinite design possibilities for spread / light-placement.

    Really great tool, bro… thank you for the valuable resource.

    I think the Constant Current Calculator is safe, as a top destination for page hits – for now.

    • LEDGardener

      October 10, 2017 at 10:57 pm

      Thanks Mr. Volt. Indeed, if you don’t have access to the pre-built stuff or you’re looking for total customizability, this is the way to go!

  2. Richard Sullivan

    October 15, 2017 at 7:15 pm

    I’m having a hard time sourcing the lights in your list.
    For instance, I can find plenty of places with a lt-f562a, but noplace with a lt-f562b, like in the calculator.
    What is the difference here?

  3. hi gardener,
    when i look at the h562d it seems to be 480ma, not 1200.
    Where do i find that info?
    cheers Peter

    • LEDGardener

      October 16, 2017 at 6:17 pm

      That current you see in the data sheets is just the current that they used to test it and produce the other numbers shown in the data sheet. You can determine the true maximum current of each strip by looking at how the diodes are laid out.

      In the case of the H562D, the spec sheet says each string of diodes has 8 diodes in series, and that there are 6 of these strings in parallel. Since we know the max of a single diode is 200mA, we can multiply that by the number of strings into which it’ll be split (6) and get our max for the strip (1200mA)

  4. Hi LedGardener!
    Thanks for your answer on the previous question! I followed your advise, but! Do you know of any site that have wordwide shipping for drivers/cobs/boards(this mtk are always out of stock)?
    Also! where a can order this strips, worldwide and not!

    Thanks in advance!

    • Hey Damian,

      If you visit the forum, we’ve got retailers listed geographically. I believe in the General LED forum.

      Good luck with your build. And keep growing!

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