Until now we only used the Arduino as power source. Now it is time to program something, right?
Build the following circuit. (You can reassemble the one of Unit 4).
Like in the example before the one side of the circuit is connected to the GND (to the minus pole). But this time the other side is connected to a Digital I/O pin. I/O means input / output. To make things easier, we will call this pins just Digital Pins.
In the next step, we will make it blink!! 🙂