tutorial:sequences_ideas:rainbow_tutorial
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tutorial:sequences_ideas:rainbow_tutorial [2012/08/24 09:17] – Jan_K | tutorial:sequences_ideas:rainbow_tutorial [2015/12/27 17:03] (current) – buzzy | ||
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====== Rainbow Tutorial ====== | ====== Rainbow Tutorial ====== | ||
- | This tutorial is created because some RGB fixture | + | This tutorial is created because some RGB fixtures |
- | Additional | + | In addition, |
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{{: | {{: | ||
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|6: Magenta | 255 | 0 | 255 | | |6: Magenta | 255 | 0 | 255 | | ||
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- | The sequence will when it is played-back fade from one color to the next.\\ | + | The sequence will, when it is played-back, fade from one color to the next.\\ |
It will start with red and fade to yellow with all the shades in between.\\ | It will start with red and fade to yellow with all the shades in between.\\ | ||
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Looking on the selected fixture in FreeStyler it will only show final color red, yellow and so on.\\ | Looking on the selected fixture in FreeStyler it will only show final color red, yellow and so on.\\ | ||
The shades / rainbow effect comes from the fading in between the colors. \\ | The shades / rainbow effect comes from the fading in between the colors. \\ | ||
+ | \\ | ||
+ | \\ | ||
+ | **Now to some considerations.**\\ | ||
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+ | Note this may not be right.. \\ | ||
+ | \\ | ||
+ | The color values above may be correct but what if the colors are generated by a LED fixture with Red, Green and Blue Leds.\\ | ||
+ | \\ | ||
+ | If the red value 255 correspond to 1W power on red and the green value 255 correspond to 1W power on green.\\ | ||
+ | Then the yellow will have 2W as both red and green are full on (255).\\ | ||
+ | If this is a correct assumption then the power has to be reduced to half the value (127) for both.\\ | ||
+ | \\ | ||
+ | If a sequence with only 3 steps , Red, Green and Blue is created then the following will be the case.\\ | ||
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+ | The step from Red to Green will then in the middle of the fading time be Red 255 -> 127 and Green 0 –> 127.\\ | ||
+ | Meaning equal amount of red and green (Red 127, Green 127 = yellow) but only with half effect 0,5W + 0,5W.\\ | ||
+ | This gives yellow with 1W.\\ | ||
+ | So a simple 3 step sequence with fading in between the steps will give a total power of 255 (1W) for all color shades\\ | ||
+ | \\ | ||
+ | An alternative to generate a 3 color sequence could be to use the FX function in the sequence editor for generating a color change for the color channels. This could a “sine” or “cosine”.\\ | ||
+ | There will then be a Red, a Green and a Blue sequence.\\ | ||
+ | The trick will then be to start them correct.\\ | ||
+ | If they all have 12 steps then the Red are first started, at step 4 green is started and at step 8 Blue is started.\\ | ||
+ | \\ | ||
+ | In the end this is a question of trying it out and see what works and give the most suitable effect.\\ | ||
+ | \\ | ||
+ | If people are looking direct into the leds then all they will see is a bunch of red, green and blue leds. \\ | ||
+ | Not the color shade and then the rainbow effect may not be usable at all. \\ | ||
+ | \\ | ||
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tutorial/sequences_ideas/rainbow_tutorial.1345799857.txt.gz · Last modified: 2013/03/11 03:56 (external edit)