I have a 5 meter ws2812 led strip with 150 leds. I am using an arduino uno board with a capacitor to the led strip. I've tried a few different codes and cannot get what I am looking for. My goal is start with 9 or so leds on, then as they all fade off together, the next 9 leds fade on. so on till …

Colorwipe on WS2812 LED strip where a group of leds go on then off together

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