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Arduino: serial I (native speaker) - Contenido educativo

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Subido el 13 de marzo de 2022 por David G.

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Hello. In this exercise we are 00:00:00
going to learn something new about the 00:00:07
usb. The usb is the 00:00:09
wire we use to connect the arduino 00:00:11
board to the computer 00:00:13
so we already know that we can 00:00:15
use this wire to program the arduino 00:00:17
board from the computer and we also 00:00:19
know that we can use this connector 00:00:22
to provide energy from the computer but 00:00:24
there is another possibility we can use 00:00:27
this connector to send and receive information 00:00:29
from the computer to the arduino board 00:00:32
and vice versa from the hardware 00:00:34
aboard to the computer 00:00:36
so in this exercise here we have 00:00:38
the arduino board we have the 00:00:41
protoboard 00:00:43
and we have the voltage divider now 00:00:45
the idea is really simple we already 00:00:48
know how to read an analog value 00:00:50
using a zero and the voltage divider 00:00:52
so we are going to program the 00:00:56
circuit this way so let me show 00:00:57
you the code 00:00:59
we are reading the analog pen or 00:01:05
connector a zero we store it in 00:01:07
a variable called a 00:01:10
and that the new block is the 00:01:13
second one this blue one 00:01:16
you will find it here at the 00:01:19
top in the blue library 00:01:21
and it's this blog called print series 00:01:27
monitor and the interesting thing here is 00:01:30
that we are going to print a 00:01:33
okay so then we have this weight 00:01:36
block 00:01:38
and so what is what is this 00:01:40
blue one mean while the series monitor 00:01:41
is a tool the computer has to 00:01:43
receive information from the arduino board 00:01:45
so here in the simulator 00:01:50
the series monitor is down here so 00:01:53
when we start the simulation down here 00:01:57
we will be reading values ok the 00:02:00
values that are coming from a zero 00:02:02
if i move the divider closer to 00:02:05
five volts to one thousand twenty three 00:02:07
you can see that the values become 00:02:10
higher 00:02:12
if we move move it closer to 00:02:14
zero toward the left it becomes lower 00:02:16
but using the simulator here doesn't give 00:02:20
you the whole idea about the program 00:02:23
so I am going to take this 00:02:25
code 00:02:28
and we can stop the simulation 00:02:30
so just the code I'm going to 00:02:39
take the text right and copy and 00:02:41
paste it 00:02:43
into the arduino id the program you've 00:02:45
already seen that so I paste it 00:02:48
here and check it up here 00:02:51
and it works fine and then we'll 00:02:55
upload this to the arduino board because 00:02:57
my arduino board on the screen is 00:03:00
connected to the computer through the usb 00:03:02
wire that is back here can you 00:03:04
see it 00:03:06
so I'm going to send this program 00:03:10
the one that we programmed with the 00:03:12
blocks to the arduino 00:03:14
so we will read from a zero 00:03:17
this one and we will also have 00:03:19
the five volts and the ground 00:03:21
so the arduino board will read the 00:03:26
information sent by a zero so I 00:03:28
will send it or click upload and 00:03:31
now it works 00:03:34
now the series monitor in this program 00:03:36
can be found up here if we 00:03:39
click on tools and then down to 00:03:41
series monitor 00:03:44
let's just make it a little bit 00:03:47
smaller 00:03:48
so right now we're reading seven hundred 00:03:51
sixty six 00:03:53
if I turn this real voltage divider 00:03:55
higher and move it a little bit 00:03:57
to the left or even all the 00:04:01
way it'll go to the maximum value 00:04:02
it'll read the highest if I move 00:04:05
it to the to the right it 00:04:07
becomes lower and lower 00:04:08
and it's reading lower so this is 00:04:12
really interesting because we are taking this 00:04:13
electronic component and the value is sent 00:04:16
using the usb here and sending it 00:04:19
to the computer and the computer can 00:04:22
read it 00:04:25
so this is the amazing thing about 00:04:27
this exercise 00:04:29
so for now let's just leave this 00:04:36
simulation here and go back to the 00:04:38
circuit this is the exercise you have 00:04:40
to do you are going to copy 00:04:44
this voltage divider so place another one 00:04:45
next to it for instance with the 00:04:48
ground connected to the ground the five 00:04:50
volts wire connected to the five volts 00:04:53
and 00:04:56
here instead of connecting to a zero 00:04:56
which is already being used you're going 00:04:59
to connect to a one so you 00:05:01
will read two values and so the 00:05:03
same way you're reading one value in 00:05:05
the code you will read another one 00:05:08
in another variable for instance you can 00:05:10
make it be 00:05:13
and you will send both values to 00:05:15
the series monitor with a and then 00:05:16
again with b 00:05:19
then you await one second because it 00:05:22
means you read and wait one second 00:05:24
until the next one starts reading 00:05:27
and then you will also use the 00:05:30
if block to compare like we've done 00:05:31
now there will be three possibilities if 00:05:35
a is higher than b 00:05:38
and you will use the blue block 00:05:41
to say if a is 00:05:43
higher than b 00:05:44
and another one for if they are 00:05:47
equal so if a equals b and 00:05:49
you will send with the blue block 00:05:52
a equals b 00:05:54
and the third one if b is 00:05:57
higher than a 00:05:58
you will send that to the series 00:06:01
monitor with blue if b is higher 00:06:03
than a so you will complete this 00:06:05
exercise with another variable and you will 00:06:07
check three conditions and you will also 00:06:09
send the three conditions to the usb 00:06:12
connector and series monitor okay that is 00:06:14
all for this 00:06:20
exercise good luck 00:06:21
Idioma/s:
en
Autor/es:
David Gonzalez Arroyo, Alyssa Fantel
Subido por:
David G.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
107
Fecha:
13 de marzo de 2022 - 20:10
Visibilidad:
Público
Centro:
IES MARIE CURIE Loeches
Duración:
06′ 25″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
74.43 MBytes

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