Correct millis() with an RTC

Projects Programming
7

@alemonti, you've chosen to ignore the two best (IMO) alternatives presented to you:

  1. Switch to a board that supports driving NeoPixels via DMA.
  2. Switch to SPI-based LED strips that work with Clock / Data signals and don't require interrupts to be disabled (i.e. APA102 or DotStar).

Also, isn't this post a duplicate of Your Previous One?