- led_driver.h declares StripWand (NeoGrbwFeature/RMT) + StripSchrank (NeoWs2801Spi2MhzMethod) - led_driver.cpp implements initStrips, showBothStrips, setAllWand/Schrank, applyBrightness helpers - showBothStrips calls stripWand.Show() first (non-blocking DMA) then stripSchrank.Show() (blocking SPI) - Brightness clamped to [0.0f, BRIGHTNESS_MAX] before scaling