The Arduino Nano LED chaser program lights LEDs sequentially from pins D2 to D12, creating a running light effect. Ideal for visual patterns, it demonstrates basic digital pin control. - Projectsle ...

Arduino 74hc595 Shift Register | 16 Led Chaser With 18 Effects Hello again, I am thinking about how to control more than 20 led with Arduino Uno because Arduino Uno only has 13 digital pins.

His LED chaser/light show does not use any microcontrollers at all, rather it relies on an EPROM to store predefined display programs.