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AusChristmasLighting 101 Manual
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101 display basics
Wiring Pixels to Falcon F16V3
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[QUOTE="i13, post: 116974, member: 21708"] Correct, power injection would be the only way to reach the limit of 1024 pixels per output. You'll need to consider both the voltage drop and the maximum current that the wires or controller can handle. I personally would not consider building a megatree without using power injection (and maybe I'd use 5V but that might be pushing the height limit if you only want to inject at the base of the tree and still use 100% brightness). This might (read on) be something that you could do in future if you don't want to now. Pushing the limit to 1024 isn't always a good idea though. Assuming that there is no expansion board, once you exceed 680 pixels per output, the entire controller's frame rate drops below 40 FPS. What frame rate do you sequence at? Another downside of having more pixels per output is that if one pixel fails, it can stop passing on the data to all of the pixels after it. When there are more pixels per output, one failure can take out a larger portion of the tree. With injection, I think it would be sensible to use three outputs (576 pixels per output and it evenly divides the 32 strands), four outputs (432 pixels per output and it evenly divides the 32 strands) or six outputs (288 pixels per output and it evenly divides the 32 strands). My personal choice would be to use three outputs and make a spare strand that's easily swappable when there's a failure. You can change the number of outputs each year if you want to. I think you mean "output" instead of "channel" because every pixel is three channels (one each for the red, green and blue). The number of pixels that you can have when powered at one end depends on the voltage, pixel type, wire spacing, wire thickness and lead-in cable. As a very rough guide which I haven't tested, there can be up to 100 12V pixel nodes away from an injection point before voltage drop causes problems at full brightness. Remember that power isn't directinal so that means a two-way injection point every 200 pixels. The controller itself can be an injection point. Each pixel should draw no more than 0.0555 amps but it can be lower in reality. With this (pessimistic) figure, that would mean you could have 90 pixels per controller output before you reach 5 amps. Reducing the brightness might help you exceed 90 but you'd need to be prepared to blow fuses if the data signal goes corrupt and causes the pixels to flicker brighter. Answering the question about whether you could build this tree without power injection, you might (or might not) get away with it but you'd have to use all 16 controller outputs with 108 pixels each. You would wire them in order from 1 to 16 around the tree in either a clockwise or anticlockwise direction. One advantage of using all 16 outputs with a small number of pixels each is that you retain more capacity to add a Falcon expansion board later. There are different types of 12V pixels which you can read about in this thread [URL]https://auschristmaslighting.com/threads/12161/[/URL] If you're planning to use 11 outputs, 32 strands doesn't divide evenly by 11 so hopefully someone can chime in and explain how or whether you can model that. Which sequencer do you use? [/QUOTE]
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Wiring Pixels to Falcon F16V3
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