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AusChristmasLighting 101 Manual
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101 display basics
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[QUOTE="djgra79, post: 96297, member: 1447"] HI Ben. Data for pixels needs to travel in 1 direction and in series. The Pi-hat only has 2 outputs of data, so if you have the pi and pihat in the centre, then you could have 1 output per side going in opposite directions to the ends of the gutters. Otherwise if you have the pihat at one end, the entire length of gutters can be 1 output, freeing up the 2nd output for possibly another element. Then there is power to consider. The basic rule of thumb is that 5v lights need power injection every 50(ish) pixles, and 12v every 100(ish) pixels. 5core security cable cable be used for both data and power - I use 4 core myself and have a separate cable for power injection, twisting 2 cores together for pos and 2 for neg. I also use it for data with 1 core for data and 2-3 cores for ground/neg as this ensures a stronger signal. [/QUOTE]
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