This diagram uses the original Gemma but you can also use the Gemma v2 or M0 with the exact same wiring!
GEMMA Vout -> NeoPixel Ring Vcc and single FLORA pixel + GEMMA D1 -> NeoPixel Ring Data IN GEMMA GND -> NeoPixel Ring Gnd and single FLORA pixel - NeoPixel Ring Data OUT -> single FLORA pixel inward-facing arrow
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