A realistic LED candle simulation using an Arduino and NeoPixel LEDs
Youtube demo: https://www.youtube.com/watch?v=zX_JXVMhgU8
License: This is made from a hacked-up copy of https://github.com/adafruit/Adafruit_NeoPixel/blob/master/examples/strandtest/strandtest.ino, which has a LGPLv3 COPYING file, so I will do the same.
You are not legally required to, but I do kindly ask that if you use this your project, just let me know. Especially if you use it comercially, I would be thrilled to be able to buy a properly manufactured candle featuring my algorithm :-)