Seed Pixel Matrix Ideas

[Jas0r]

Sorry to resurrect an old thread but I am looking into these for a garage door matrix. I can see I can get them in 2m x 0.25m size at 2.5cm spacing is 80px by 10px per section
What I am now struggling to understand being pre-made how do you inject power. I know you cant run all 800 from 1 port without injecting. I have tried to ask the manufacturer (Scottled) about this but struggling to get this across.
Has anyone brought these and can share the max runs and how you inject power?

https://www.aliexpress.com/item/1005006790229387.html

 

[merryoncherry]

You should not need to inject power (though you can put it at both ends if you like). The "backbone" across the top ensures that the current path to the lights is short, so you don't have too much thin seed wire in the string and the voltage won't sag as badly as it does with, say, 100 connected in a single string.

(Say for a string, your current path may be 100x5cm = 5m of thin seed wire. For this matrix, the farthest out may be 20cm of backbone and 100m of seed wire. It's as if it is already power injected for you.)