2025-05-13 (Tu) QuarterRoundWS2812BArray Seconds hand

I wrote a new function that drew a line instead of a dot for the seconds indicator. Yesterday's function that returned a pixel address based on the ring and position was critical for making this possible. Each ring could be divided mathematically and point to approximately the same angle. The first example quickly overran the center rings while the outer rings lagged and never completed a circle, while the seventh ring, with 60 lights, finished perfectly. I fixed the inner rings by using some float-math so I could calculate functions, but the rim still lagged. Instead of worrying about it, I excluded the two outermost rings from the calculations, which I can repurpose later. The line is unsettlingly jagged, but it may look all right when the passing line turns the clockface a new color as it passes instead of a single row of lights.

A line traveling at ≈ one increment per second

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2025-05-01