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good morning today we are going to

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create a new circuit

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okay I have already logged into tinkercad and

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now I am going to click on

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create new circuit

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so now I'm in and as always

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the first thing I need is the

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protoboard and the arduino board so

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I'm going to now click and drag

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the LED

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because in this exercise instead of controlling

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one single LED we're going to control

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four of them so it will be

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a sequence of LED ds

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so i'm going to click and drag

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one of them

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and this one is connected here and

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here and remember that the vertical lines

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are all connected together the set of

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five of them so i have one

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LED I will have a second one

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and a third one and a fourth

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one

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now the first one is going to

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be controlled with pin number thirteen so

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we can click and drag

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and remember we want to connect it

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to the anode the one that is

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not straight

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with this one the second one we

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can connect it to number twelve

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and the third one to number eleven

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and the fourth one to ten

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but remember now we need to close

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the circuit so all of them are

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going to be connected to the ground

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to this connector but I'm going to

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use it in a different way

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this one will be the ground so

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I'm going to connect it here and

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remember to change it to black

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and the same for this one

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I need more room so i'm just

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going to shift them over

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also change it to black and then

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we'll do it again for the third

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another last one

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okay so now I need the resistor

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and remember that every time we send

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current to an LED we need a

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protection resistor

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and we also want to make sure

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that it's two hundred and twenty ohms

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so I will click on the resistor

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and I can type two hundred and

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twenty but instead of kilo ohms 

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I want ohms so now I have my

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resistor and I'm going to connect it

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here

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now is the resistor connected to the

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four LED because along this

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horizontal line everything is connected to each

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other so the resistor is connected to

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the LED ds using this horizontal strip

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now i'm going to use the ground

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connector and I'm going to connect it

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to the resistor

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if I shifted over you can probably

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see it more clearly

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okay so this is the ground connector

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and through the resistor is connected to

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all four LED

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so now i have all of the

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connections and now it's time to program

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the arduino board because it's the one

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that will control the four bulbs

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so I click on code up at

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the top and I'm going to get

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rid of the one already there

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so I'm going to program the arduino

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board this way so we want number

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thirteen to be on for one second

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and then it will be off and

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the moment it turns off the next

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one will start shining and then the

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next and the next so the first

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thing we're going to do is define

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number thirteen

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to choose thirteen on high or on

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then we want it to wait or

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be shining for one second

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and then off for one second so

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thirteen and low or off

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then we want the same to happen

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with twelve and eleven and ten so

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we can either click on that and

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drag it again

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or

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we can right click and click duplicate

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which is much faster

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then we have the same plucks so

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now all we have to do is

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change the numbers so we're going to

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do the same for number twelve

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duplicate one more time

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so that it is for number eleven

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and one more time for the last

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one of number ten

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so ten

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and ten

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so now we have these four separate

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parts of the program but we want

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to connect all of them together so

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if we click and drag they're all

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connected to make one sequence and it's

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the same idea for all of them

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on for one second waiting for one

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second and then off and as soon

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as the first one turns off the

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second one

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we'll begin and if I click initiate

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simulation we can see just that can

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you see the sequence okay so now

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it's your turn to try this exercise