Hoping someone can help me out with a distance issue with lights

[jerrad.roberts]

I am trying to put snowflakes in my yard to look like fireworks. Instead of using an entire port for each 50 light firework I was trying to connect them all. I have the holiday coro flex and I am going from the box about 15 feet to the first firework. (That cord is a 3 prong connector soldered into an 18 awg wire soldered onto a 20 awg w2811 connector). Then I cut a 10 ft 18 awg extension, soldered the two connection pieces on each side and tried to put it in. It will only light maybe 2-3 of the lights on the second firework. I looked it up and some said it could be the data wire so I bought a amplifier off holiday coro and it didn't change anything. Anyone else ran into something like this or am I just going to have to run 50 lights to each port.

[Gilrock]

You could keep it on the same port if you do power injection.  Just make sure you connect the ground of the power injection to both the source power supply and the injection power supply or they might float too far apart.

[jnealand]

I have 20 snowflakes (Boscoyo 24" 48 nodes each)  I have them in multiple locations and always run 4 per port on whatever controller is closest.  I have two groups of 4 on my roof.  For the 1st group I use a 30ft extension (20 + 10) to the first flake, then a 5ft extension between the others.  The 2nd group on the roof I start with a 20ft extension and then 5 ft between each of the rest.   All my other groups of 4 use 15ft or less to the first flake.  NO POWER INJECTION is used and no data boosters either.

[Gilrock]

I don't see any mention of voltage.  I'm about to install 20 new flakes on my roof.  There will be power injection because you can't do what Jim does with 5v pixels.

[JonB256]

I have 27 of the Boscoyo 48 pixel snowflakes on my roof. 12v WS2811.
I use 3 (350watt) power supplies because I run them at 70% power and it needs it.
I also have 180 C9 pixel perimeter lights surrounding all the snowflakes. They are at 100%
One power supply is at the controller (Falcon F16v2).
The other two are on the back side of the roof with RayWu T-connectors coming down the roof.

I don't cut the 12v Positive lines like some recommend, so I power inject "both directions" from my T-connectors.
There is a ground wire between all 3 supplies. No flicker.

[Gilrock]

I think people need to understand why cutting the positive line is recommended because if you don't know why then you can have issues.  One reason to do it is if you have more than one power supply because you don't want the power supplies fighting each other.  Can you get away with that?  Sure depending on how close the voltages are which is quite dynamic as it goes through the wire.  The second reason is because if a wire breaks or is disconnected from one of those T connections then you are now dumping all the additional current through that positive bridge.  So imagine 200 pixels with a T in the middle.  Lets say you have it set so the first 100 are drawing 4 amps and then you bridge the positive and source another 4 amps.  If the positive on either end becomes disconnected you now have 8 amps dumping through the remaining positive.  If you had it split you just lose that one section and no fuses blow.  So can you get away with it sure but it helps to know why because you don't want to start unplugging things when its powered up in that configuration.