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Arduino: temperature sensor (native speaker) - Contenido educativo

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Subido el 3 de abril de 2022 por David G.

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Hello. In this video tutorial today we 00:00:03
are going to learn how to control 00:00:06
a temperature sensor with the arduino board 00:00:08
okay we have our board and the 00:00:12
first thing we need is a temperature 00:00:13
sensor 00:00:15
you will find it in the library 00:00:16
the basic components library down here 00:00:19
there it is so click and drag 00:00:25
like always onto the protoboard 00:00:27
and this temperature sensor has three connectors 00:00:30
the first one has to be connected 00:00:32
to five volts the third one or 00:00:34
the other one on the end is 00:00:37
connected to the ground using the black 00:00:39
wire to the ground connector on the 00:00:41
arduino board 00:00:43
and the second one or this one 00:00:45
in the middle is going to be 00:00:46
connected to analog input a zero for 00:00:48
instance like today and it's the one 00:00:51
that's going to read the voltage from 00:00:54
the sensor and the arduino board will 00:00:55
read the temperature using this wire and 00:00:57
this voltage 00:01:00
so the connection is really easy but 00:01:02
how do we program it 00:01:05
so let's open the code 00:01:09
and for now just forget about the 00:01:12
second part the important thing here is 00:01:14
this purple one this one is a 00:01:16
specific input for a temperature sensor and 00:01:19
what it means is that we are 00:01:22
reading from this connector we can read 00:01:24
from a one a two a three 00:01:27
a four or a five and we're 00:01:29
choosing a zero 00:01:31
just for this example 00:01:32
and the unit we want is degrees 00:01:35
in Celsius 00:01:38
so the moment we have this block 00:01:40
we can store the reading in a 00:01:41
variable called temperature and then we can 00:01:43
send it to the serial monitor using 00:01:47
the block we have already used in 00:01:49
several other exercises 00:01:51
so the connection and the programming are 00:01:55
both very simple now let's look at 00:01:57
the simulation 00:01:59
so if I start the simulation 00:02:05
nothing happens at first but the reading 00:02:09
is here in the serial monitor 00:02:12
right now the sensor is reading twenty 00:02:15
four degrees why because if we click 00:02:17
on the sensor 00:02:21
this bar will appear and we can 00:02:24
decide what the temperature it is reading 00:02:27
from outside 00:02:29
so if we go up to forty 00:02:31
nine here then that means the arduino 00:02:33
board will read forty nine in the 00:02:34
monitor 00:02:36
we go up to seventy six or 00:02:39
seventy eight then the board will read 00:02:41
the same seventy eight so the simulation 00:02:43
works your exercise will be a little 00:02:46
bit more complicated but just a little 00:02:49
bit I'm going to show you the 00:02:52
program in real life 00:02:54
so here's the program and I have 00:02:57
my arduino board here and the temperature 00:02:59
sensor 00:03:01
is over here it's very small over 00:03:03
here so it's hard to see but 00:03:06
we're reading it now you can see 00:03:08
the measurements here in the serial monitor 00:03:09
right now it says the room is 00:03:12
twenty two degrees 00:03:13
now if I touch it with my 00:03:18
fingers 00:03:20
the temperature will rise will go up 00:03:22
that makes sense 00:03:24
now it's reading twenty four so the 00:03:26
device is working 00:03:29
now I've had to make a modification 00:03:31
because this reading is slightly different if 00:03:33
we have a look at the text 00:03:37
taken from the code on the computer 00:03:38
let me show you the text 00:03:43
this line here is different temperature equals 00:03:45
minus forty plus number multiply by analog 00:03:50
read minus twenty this line is not 00:03:52
the same as this one here now 00:03:55
this is because I have a different 00:03:59
temperature sensor but it's not a problem 00:04:01
because if you look for information 00:04:03
can you look up the type for 00:04:05
instance and the sensor I'm using is 00:04:07
the l m thirty five so if 00:04:10
I look this up online I will 00:04:12
find how to connect it and I 00:04:14
will find out how to read it 00:04:16
using the arduino board 00:04:18
all the information is here so this 00:04:21
is the only line that i have 00:04:23
modified now there's another modification too because 00:04:24
I have added something to control a 00:04:28
buzzer do remember 00:04:31
now the buzzer is over here 00:04:34
on my screen this is the buzzer 00:04:39
and if you remember the buzzer makes 00:04:42
sound you already know how to program 00:04:44
it and if you don't remember you 00:04:46
can go back to the exercise when 00:04:48
we used it 00:04:49
so we have a specific output just 00:04:51
to remind you there's a specific output 00:04:54
in the library so let me take 00:04:56
you back to the output library 00:04:59
we have a block here 00:05:03
we use this block and then a 00:05:07
wait block so you can control the 00:05:09
buzzer 00:05:11
now back to my real circuit so 00:05:16
I have the arduino board here 00:05:18
I have a buzzer 00:05:21
and I have my temperature sensor here 00:05:23
so let's have a look at how 00:05:27
my sensor works 00:05:28
right now we're reading twenty two 00:05:30
if I touch it like before 00:05:34
the temperature will rise 00:05:39
and I've programmed the circuit so that 00:05:42
if the temperature is higher than twenty 00:05:44
five the buzzer will produce sound so 00:05:46
I will touch it twenty twenty two 00:05:48
twenty three twenty four twenty five twenty 00:05:51
six 00:05:54
do you have 00:05:56
can you hear it? 00:05:58
the buzzer okay so my circuit is 00:06:00
working now if I remove my hand 00:06:02
from the device the moment the temperature 00:06:04
becomes lower it doesn't buzz anymore so 00:06:06
this is the exercise you will have 00:06:10
to program using the simulator you only 00:06:11
need to click and drag the buzzer 00:06:15
you need to connect it to ground 00:06:18
and to one of the digital devices 00:06:20
and using this block for sound and 00:06:24
the weight block remember adding them together 00:06:27
here 00:06:29
and you will also need the condition 00:06:31
the conditional the if block if and 00:06:33
a temperature so for example if the 00:06:36
temperature is higher than twenty five or 00:06:39
fifty or whatever you want 00:06:42
then the buzzer will produce sound now 00:06:44
you should already know all the blocks 00:06:48
you need and your simulation will work 00:06:49
the same way my real circuit has 00:06:51
worked so think about how to program 00:06:53
this and good luck 00:06:55
Idioma/s:
en
Autor/es:
David Gonzalez Arroyo, Alyssa Fantel
Subido por:
David G.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
50
Fecha:
3 de abril de 2022 - 20:43
Visibilidad:
Público
Centro:
IES MARIE CURIE Loeches
Duración:
06′ 58″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
23.08 MBytes

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