Using an Arduino Uno or Leonardo, [Mark] reports its possible to twinkle 300 individual LEDs at a rate of over 50 updates a second.

Using an Arduino Uno or Leonardo, [Mark] reports its possible to twinkle 300 individual LEDs at a rate of over 50 updates a second. Using a faster microcontroller should net reliable performance ...

We'll freely admit to having a love / hate relationship with Christmas lights and decorations. The sheer gaudiness of it all often turns our "bah humbug" nature inside out, revealing the awe ...