Although this circuit has none of the extra bits you’d find on an Uno, not even a crystal oscillator ... Check out this Sierpinski Christmas tree.

They wrote: “The one thing you need. “The tree without the faff or fuss. Crystal Effect LED Christmas Tree, £129.99, Crystal Effect LED Half Tree, £24.99, Iridescent Standing Reindeer ...

A dazzling display of sparkle and shine has made its way to the top of the Rockefeller Center Christmas ... crystal star on top of the 82-foot, 14-ton tree. Work is underway to install 50,000 LED ...