🔴 red: +5V 🟠 orange: +3.3V ⚫ black: ground ⚪ white: ground (pull-down) 🟣 purple: I2C signal 🟢 green: clock signal 🟡 yellow: WS2812 signal 🔵 blue: resistor bridge (analogue) input Maybe this would be useful for your documentation, too. More @Wikipedia
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