Flashing LED

For Beginers - Blink an LED on Arduino with Simulink

This is the first Arduino demo with Simulink that you should try (if you're a beginner) before you attempt the rest in this list. It shows how you can blink an LED using a Digital output pin with signals coming from a pulse block in Simulink.
Try using Arduino MEGA 2560 in external mode if you want to change the parameter in real time.