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AusChristmasLighting 101 Manual
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[QUOTE="merryoncherry, post: 128253, member: 37249"] I keep it simple and easy by powering everything on the cables from the controller (or differential receiver), or 3-pin cables just like those... only one box of cables to rummage in. I mostly use the 12V resistor pixel, so you can run 300ish per port of those at 100%, 20ft from the controller. A lot of ports have less, like a snowflake with 150 pixels, so that's just one cable to it. There are times when it helps to add power to the far end of the string, once you get over 200, if you do want to do 100% white. For that, I have some 3-pin tees M-M-F, I pull the data pin out, and run power from the tee to the far end of the string; whole thing goes on one controller port. The tees a bit bulky but I can usually tuck them in, very easy to work with in the field. For 400 pixels per port, which I do on one matrix, I have a special long range receiver I assembled with dedicated male connectors to plug into the far end of the string to split power across 2 cables. This receiver is right near the end of the matrix, 5' pigtails. There are exceptions. For those there are M-F-F tees to slip in the line. I have window frames done this way. I have a bit of 5V, those are only 32 strings of 50 on a megatree, so that has its own 32 port controller, no PI. Some more 5V coming this xmas, but the topology here is all out-and-back so the PI is done with 4-pin tees. I have 12V regulated peace stakes, icicles, and some other stuff, you can't do much over 100 pixels on a port with those, but they're on 16-port smart receivers, and by the time you divide up the data, you only get 150 pixels per port anyway. No sense in doing a PI scheme that supports more pixels per port than you can control. I do run everything at 100%, but recall it is the lower-power pixels. Exceptions: 5m strips get 40%, they can't handle current of 100% and the data drops out. Baby Grand Illusion gets 80%. It is so dense, it is otherwise a bit brighter than the things around it. Also everyone on the site scolds me for running 100%. This is a bit of a camera trick, it doesn't look so blinding in real life (as you can tell by the streetlight), and nobody has complained. [ATTACH type="full"]21240[/ATTACH] It's not my approach, but people who want to run 40% on 12V resistor pixels can just hook 400 up to the controller port and be done with it, no PI. People who want to do 5V at full power put a PI point every 100 pixels, often by soldering, so nothing is over 50 pixels from heavy gauge power line. [/QUOTE]
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