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Revisiting the first circuit with Arduino
Revisiting the first circuit with Arduino
Completion requirements
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Variables, loops and, in general, more stuff.
2. Add more LEDs
This is a way that works. As we mentioned before, the on-board LED is permanently connected to pin 13, so the code controls any components connected to pin 13 also.
We are now going to modify our sketch and circuit to control more LEDs. Grab 4 more LEDs and 220 Ohm resistors and draft a sketch that will turn them on and off one by one in a loop.
Take some time to think of the code with what you have learned so far. Hint: Perhaps you will need to repeat yourself a few times.