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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@CWBudde1
What you describe is more or less what I am doing today. If you look at the second pattern it calls heavily Math.sin (3 times per pixel). For a low number of pixels it is probably not an issue, but for about 250 pixels (=750 calls per refresh) it makes a difference.
Also this so called quadrature oscillator can come handy for other uses as well.