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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.
@devsnd
Hey @ramzy23,
Your code is slow because of overdraw. Overdraw means that you paint the same pixel over and over again, no matter if it has already been painted before. Since you step through your circle at 0.1 degree increments, it gets really expensive to draw your circle even in the emulator. The real hardware watch would take a lot longer still.
I recommend looking at drawing algorithms using the implicit circle equation or the bresenham algorithm.