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AusChristmasLighting 101 Manual
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101 display basics
My kulp box setup - please check wiring diagram for correctness
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[QUOTE="i13, post: 117196, member: 21708"] If you can get away with power injection every 100 pixels, you should be able to get away with power injecting in both directions so that no pixel is more than 100 pixels away from an injection point. Data is directional but power isn't. If you connect the positive in both directions at the injection point, you can have an injection point every 200 pixels. All pixels in the run are on the same power supply in your diagram but if they weren't, you'd need to cut the positive line in the pixels half way between the injection points so that you don't connect the power supplies' positive outputs together. Regardless of whether you're going to inject in both directions or not, if you're planning to have 100 pixels away from the injection point, it would be a good idea to bench test this for voltage drop and incorrect colours. Not all pixels are created equal; the limit will depend on their current draw, the wire thickness and wire length between them. You'll also need to consider that there will be voltage drop in all wires in your diagram. The voltage that reaches the pixels at the injection points will already be below 5V. Keeping the cables short and thick helps. [/QUOTE]
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My kulp box setup - please check wiring diagram for correctness
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