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Oh, oh, oh, oh, oh, oh, oh Shadows come and go

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Let the daylight show Hold me close, don't let go

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In this moment glow Heartbeat like a drum

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This is one of the end-of-course projects that we have, there is another one that we will see next

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and this is something as simple as seeing how a plate, an electronic circuit with its connections

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and provides current to an engine that will lift a little person if a little person is simulated

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and will do it automatically depending on the light it receives in such a way that if we cover the light

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the blind will open and if we uncover the light the blind closes for this we have used a

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bit block board that has the light sensor connected to the sensor there and then here a

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motor we are going to test it as the board is already programmed we do not even need to connect it

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to a computer so that with some batteries that give current to the board and this to the

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motor with all that the installation already works we are going to do a small test we cover the light

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and see what it does, it reaches the end, now at the moment we uncover it should go down and that is

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all, then we will see how the program has been designed, this has a program that is the one that

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indicates in what direction the motor has to move, the axis of the motor and both to open and

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to close and we are also indicating to it, we are going to indicate in what conditions it should do it and

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and how long the motor should be rotating in one direction or in another.

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As for the conditions, it is clear.

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When it receives light, it rotates in one direction and when it does not receive it, it must rotate in another direction.

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And then the plate also checks the state in which the ring is.

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If the ring is already raised, logically, although we cover here,

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the motor should not rotate further up.

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And when it is lowered, it should not go down further.

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That is this little project at the end of the course.

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This is the program that manages the movement of the motor.

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This program is made with blocks and within a generic application that is BitBlock.

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BitBlock allows us to place the board with which we are working

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and the elements that are going to intervene.

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Here is the motor that will allow us to turn it in one direction or another and at the bottom we have the light sensor.

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How is it programmed? It has been programmed in such a way that initially for this program we declare some variables

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some variables that will be called state, it will indicate if the pressure is already up or down

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and the sensor, initially we give it value 0 and throughout the program we will give each one its value

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we start by saying that the value that makes a reading of the sensor

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and for that we say that the sensor variable is going to be worth the result of that reading

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that reading is in a range of values ​​that we are going to use to compare

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next we send it to wait 500 milliseconds, that is, half a second, so that it does not do a

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reading immediately afterwards, if not, it may be that it does too many readings at

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the same time and then the program can give us errors here we establish a loop if a

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comparativa y aquí abajo otro vamos a ver qué hace dentro de ese bucle dentro de ese bucle le

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decimos que si la variable sensor es la que acaba de leer aquí arriba es mayor o igual que 75 y

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además la variable estado es exactamente igual a 1 entonces ejecutamos que el motor gire en

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clockwise. For how long is that motor going to rotate that will raise the pressure?

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Around here, 4 seconds. And then the motor stops. And the variable state, since it has changed and

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now the pressure would already be up, the variable would go to zero. Here we are with the

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same loop, exactly the same, only the parameters change. If you look here we have a

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value of 75 and here one of 25 and here the state variable was in 1 and here it is in 0 everything else

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is almost almost the same here for example the engine what it does is turn in the opposite direction to the previous one

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here it was clockwise and here counterclockwise its waiting time which is the same in both cases the

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of the motor and we change the variable state again that already here it started at 0 the variable

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we put it at 1 for the rest that is all this is the project that we have done for the end of the course

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which is a project for a barrier that works through a distance sensor at the

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moment when an object is placed in front of the barrier, it opens, changes the light,

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passes through the green light and then after a few seconds the barrier will close

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if we want to see it in operation only by interrupting it, it is more while the vehicle

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is here the barrier will not go down because the sensor is detecting that there is something in front and it will not go down

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but when it finishes passing the barrier goes down this project has been a matter of three phases

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we said that one is the design of the pieces that make up the barrier the supports for

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the different elements that has been designed using pinker cat which is a design program

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and then it has been printed with a three-dimensional printer that is a little

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slow but it has taken it out, it has taken it out well, then our partner Carlos has assembled everything

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and he has placed the different elements inside, he has a plate that is a circuit that

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plate has a programming that plate is called bit block and that plate allows us as we see

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here in a different way we have the plate in the center and the motor the distance sensor

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one light and another light and how is all this programmed because in a quite simple way

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this is simply a program in which some variables are declared in this case the

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distance variable then we also give some initial instructions so that the red light is turned on,

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put the green one and move the motor to a certain position and finally we have

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what would be the loop of the program itself that loop what it does is to see here now

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if there is a line that is not right what it does is establish the initial variables and make a

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series of checks if the distance variable is less or equal to a given reading what it will do

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will be to turn on the led and turn off the other led move the servo to another position and wait five

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seconds and in case the distance is greater because the vehicle has already passed because it has

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nothing in front just do the opposite place the servo in another position turn on the red light and

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turn off the green light that is the plan that is quite simple and that sometimes gives a

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little war

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from the audience