Semaforo

thingiverse

I'm using an Arduino to make a functional traffic light system with seven LEDs and three buttons. I've got my circuit set up on a breadboard, and now it's time to write some code that will control the lights and turn them on/off according to user input. To begin, we need to define our pins for the LEDs and buttons. We'll be using pins 2-9 for the LEDs, and pins 10-12 for the buttons. Now let's start coding! We can use a switch-case statement to control which lights are turned on based on button presses. Here's how it works: when you press button A, light 1 turns on; when you press button B, light 2 turns off; and so on. Now that we've got our basic code working, let's add some functionality. We'll make the system start counting up from 0 after each button press. When a button is pressed again, it will reset back to 0.