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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.
@allObjects
needs some slicing and dicing of the input argument ...but you can combine this even with proximation, which makes it possible as well without trigo... who does notice that it is not a exactly a sine? ...it's not steppers trying to plot a circle... :)
http://lab.polygonal.de/2007/07/18/fast-and-accurate-sinecosine-approximation/ --- I recall this from the times when I had to use tables in books and logarithm calculation ruler... --- this were really cool times that gave you the feel for numbers... accuracy of 3 digits is plenty... (may be for very slow applications it may not be good enough... 30fps is kind of a minimum... so storing values could become a memory capacity issue... on the other hand, you could burn a serially addressable flash eprom to get there; their capacity is beyond what you need).