Before we go and manipulate real hardware components, here is a quick word of caution, though.
In any case, you don't really risk anything for yourself or other persons.
The current and voltage inside the Arduino are really not that high.
The biggest risk you have is to make a short circuit which may damage hardware components all the board
itself.
In most cases, you should be pretty safe.
The Arduino is actually quite hard to burn, but it's still possible if you manipulate it in the wrong
way.
Don't worry, though, if you follow a few basic rules, you will have no problem.
First, when you want to modify something in the circuit, even just one wire, then if you are not
100 percent sure of what you do, the best way is to first power of the original, which means removing
the USB cable from the other side of the computer side.
Make your modifications double, check your security and power the other again, second, double or
triple.
Check all your circuits before you power on the aluminum.
This will make you avoid very simple mistakes.
Like, for example, connecting five votes are a digital pin directly to the ground.
I personally double check all my circuits, even for the most simple ones.
Third, no Wendy Adriano Espaillat on don't use any metric tool like a screwdriver are open to touch
the circuit.
With this, you already have a chance of creating a short circuit and thus burn a component all the
out in a boulder.
And finally, for when you build a circuit, you will connect multiple hardware components together
and all with the pins.
Make sure that all your components are connected to the same common ground.
This is super important both for safety and to get great results.
A good practice is to first connect the ground whenever you add a new component.
And we will see more about that in the following license, of course.
All right.
Now, don't be too scared of manipulating your in a board.
If you follow those basic recommendations, you should be totally safe.
The end of the course with a little bit more experience, you will be confident enough to build your
own circuits and applications in a safe way.
And now let's build that first secret.