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Good morning, you have already registered in the www.tinkercad.com webpage, so you will be able to log in and you will be able to see something like that.

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Ok, in Tinkercad.com there are different possibilities, we can create 3D designs, but now we are going to create circuits.

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So we click on this label, circuits, and now, I have already done a lot of designs, but you will have no one.

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So, anyway, you have to click on Crear nuevo circuito, create new circuit.

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Click on it and the screen will change.

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Something like that will appear, ok?

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Something like this, I mean.

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Here, on the right, you have the library of components.

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We will click and drag them to use them.

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Well, the first thing we need, well, for this exercise the basic library is enough.

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So we will move a little bit down and now we have the protoboard.

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a protoboard. Click and drag and now we will have the protoboard. The protoboard is a way

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to connect things. We will study it in one minute. The next component we need is the

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Arduino board, so we click it here. We will also need an LED. An LED is a tiny bulb, a

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really small one. And we will also need a resistor. The first thing we have already

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clicking and dragging and we click and drag and we have everything we need on

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the screen. The first thing we need is change the value of the

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resistance. This one by default is one kilo ohms, one. So but we need 220 ohms so

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we change the number 220 ohms and we are sure that instead of having kilo ohms we

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have ohms. So now we have the resistor we want. The resistor has to be connected to

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Because the Arduino board will provide a lot of energy and the LED doesn't support all the energy that will be provided.

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So the resistor will take part of the energy and that's why it's called protection resistor.

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Now the resistor is connected to the LED. Why is it connected?

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Because can you see that there are five green slots? Yes, there are five.

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five, and it means that these five slots are connected. Everything that is

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connected to one of these five slots is connected because there is a kind

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of metal stripe under the plastic. Every five green slots

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are connected here, here, here, here, but all of them are vertical as you can

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see, but there are four long horizontal resistors, stripes, lines I mean.

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This one, this one, this one and this one, but the rest of them are vertical.

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So now the resistor and the LED are connected, are connected through these five vertical

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slots.

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Okay.

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Another thing we want is connecting the Arduino board to the LED.

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So we are going to connect using wires.

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To use wires is really really easy.

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Using wires is really really easy.

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The only thing you need to do is click in here, for instance, and we are going to connect it to the ground, tierra.

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Ground, well, first of all, the color of the wire will be black.

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Why? Just because.

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Well, because it's the usual color for the ground connection.

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Ground connection, in this context, means the negative terminal of a battery.

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The Arduino board will work as a battery, a battery that can be programmed,

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that we will change its behavior according to the thing we want.

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but it's a kind of battery. So the ground now is connected to

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the straight part of the LED

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and you see that there are two parts. This one is straight, the other one is not. The straight part is

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called cathode in English and this is the one that is not straight.

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Usually, always, the wire connected to ground

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the one that usually is black has to be connected here. And the one

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the other one will be connected to connector number

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13. Why 13? Just because we want to. We can use for instance red, I don't know, just because.

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So now we have a closed circuit. This is the negative terminal and the negative terminal

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is connected to the LED and to the resistors using these two green, five green slots. Okay,

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so we have a closed circuit. Everything will work but we need to program the Arduino board,

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is the only thing we need. So how can we program it? We click here on code and something appears.

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Something is the programming window. There is already a block here, some blocks here,

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we don't want them, so click and drag them to the left and they will disappear.

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Well, our first program will be the blinking program. It's the first

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program everyone learns when you are starting programming. The LED will be shining for one

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second and then it will be off for one second. How can we program it? Okay, we are going

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to use two blocks. Definir pasador en alta y definir pasador en alta. Pasador, I don't

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like the translation. Pasador means a connector. There are 13 connectors here and because we

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We are using number 13, we are going to take 13 and the same with this one, 13 here.

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And this block will be useful to put it on and the second one will be useful to put it

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off or low, that's why this one is baja.

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If we connect this to block alta and then baja, the code, the program won't work.

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Why?

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Because we want it to be high for one second and then low for one second.

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So we need to make it wait.

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We need a wait block.

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The wait block is here in control.

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So we are going to use esperar un segundo, esperar un segundo, and now the program will

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work.

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mean 13 will be high for one second because it will be waiting for one

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second then it will be low for one second because it will be way it will be

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low for one second so now we have everything we have the LED connected to

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the protection resistor the two components has been connected to the

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Arduino board using the wires and now we can simulate it how can we simulate it

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clicking on initial simulation start simulation we click on it and everything

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is working and you can see the LED is on for one second, off for one second, and it's repeated

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again and again and again, okay?

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Now we can stop the simulation the moment we are sure it works, and now you will share

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it with me.

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How can you share it with me?

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There's a share button here.

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You click on compartir, share, and then on invitar a personas.

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This is the link you are going to share it with me.

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You can copy it, copy out, and then it's the one we are going to send to me by email.

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for instance, but anyway, if I paste here

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you can see that I will be able to open the same circuit again

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so this is the link, this one is the one you have to copy and paste

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to the email you are going to send to me and this way I will be able to

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know if you have already

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if you have really done the exercise, ok?

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so good luck with your exercise