• Oh! Well, that's interesting.

    I've switched to using SPI1.write(0b01000000, PINS.LATCH) and that almost works perfectly, except when I turn two adjacent LEDs on, one of them is extremely dim. I suspect that's just bad wiring or low battery, since if I turn them on individually, they work fine.

    I can't believe it was such a simple mess up on my part. Thanks!

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