Hi folks, I just finished wiring another setup where I did power injection at the start and end of led strip. In the middle above me I made break in 24v+ like, but still there is color change from blue to green. The weird part is at the end where power injection is LED is green too. Any idea why this color change would happen?
But if it would fail, wouldn’t the strip be dead? Because 24+v line is cut in the middle 
need to get my volt meter to confirm I guess
Does it change hue (to be more correct) when you adjust brightness? If so, I would suspect voltage drop, and power injection could help fix it.
Yes it does , if I go below 80-70% colors balance out, which is classical sign of voltage drop. What I don’t understand is how that possible if I inject power to both ends ( bottom mark with two arrows , left side has full connection gnd+ data + 24v and right side just 24v) and right side doesn’t look like it gets proper voltage. 24v line cut in the middle(top mark) with gnd + data lines connected. From my understanding if my power injection to the right side would be faulty the strip shouldn’t have illuminated let me poke it with multimeter
For power injection, it’s recommended to inject both power and ground. Also, make sure you’re using heavy enough gauge wires for the power injection path, or you will have a voltage drop at the injection point. There is also no reason to cut your +24V power line between the sections, unless you’re using two different power supplies.
In any case, a multimeter will let you know what’s really going on!
I’m leaning toward voltage drop as well, but did you buy portions of the strips at different times or from different manufacturers? I’ve seen differences in color quality when the tape is from different batches.
Just to confirm, on the right side you’re supplying +24v but not ground? Power injection requires both, so this behavior makes sense. And yes, the whole thing would illuminate if only the left side was powered, but most of the power is eaten up by the time it makes it to the right side. Blue LEDs take the most power, which is why you’re losing ‘blueness’ on the right side. Give the right side ground and it should fix your problem.
Yep thanks for your input, i forgot that I dont need to separate lines from same power supply( last one i did with multiple power supplies). So i did measure voltage at the end of the strip where the second injection happens and with only 24v line connected and GND from strip i got about 18v lol and with connected GND to the end i got up to 22v. Now its almost perfect small drop in the middle at 100% on blue but not a big deal.
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