Neopixel Library is not processing the NEO_KHZ400 option for ESP8266 (Wemos D1 mini) · Issue #186 · adafruit/Adafruit_NeoPixel · GitHub
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Giant LED for Wemos D1 Mini - OLED,Neopixel and pushbuton by AjaxJones | Download free STL model | Printables.com
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