Normally, when a project calls for addressable LEDs, we just throw a strip of WS2812s and an Arduino together, cobble together some code from the examples in the FastLED library, and call it a day.

[Hoolio] took this as a challenge and created his own Arduino blinkenlight project that emulates Space Invaders on a 5×5 matrix of LEDs The board is just a buzzer, 25 LEDs, 10 transistors ...

So, here are five cool ideas you can bring to life by combining your Arduino microcontroller ... (DIY Machines), this incredible project involves connecting an LED roll, LLC, tactile push buttons ...