LED Blink and Chaser

The LED Blink and Chaser project is often the first step into embedded systems and microcontroller programming. It introduces learners to digital output control, timing functions, and basic circuit design using an Arduino board. In the blinking part, an LED is repeatedly turned ON and OFF with a delay, demonstrating digital HIGH/LOW logic levels. The chaser effect extends this concept by controlling multiple LEDs in sequence, creating a running light pattern similar to those seen in decorative lighting and signal indicators. Technically, this project teaches how microcontrollers interact with external components using GPIO pins. It also introduces current limiting, signal timing, and loop-based program execution, which are fundamental to all embedded systems.