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Arduino: buzzer (native speaker) - Contenido educativo

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Subido el 24 de febrero de 2022 por David G.

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Hello. In this video tutorial we're 00:00:00
going to learn how to use a 00:00:06
buzzer a buzzer or a beeper is 00:00:07
a device that produces sound the first 00:00:10
thing we need to know is that 00:00:13
there is a buzzer here in the 00:00:14
library of components in spanish it's called 00:00:16
"Piezo" 00:00:20
and we're going to click and drag 00:00:22
this to the protoboard so we're 00:00:23
going to connect the beeper or buzzer 00:00:25
to the arduino board and one of 00:00:27
the connectors is going to be connected 00:00:29
to the ground and the other one 00:00:32
to whichever digital pen we want 00:00:35
so for instance here it has been 00:00:38
connected to pin twelve 00:00:41
now to program it let's have a 00:00:47
look at the code 00:00:49
so this is the simplest way to 00:00:56
program the buzzer we have used one 00:00:58
of the blue output blocks from this 00:01:01
set here 00:01:03
and we use the one for "pasador" 00:01:05
word meaning connector 00:01:07
and we've connected it to number twelve 00:01:14
and "tono" is the tone or frequency 00:01:17
and it's going to be fifty hurts 00:01:20
and it's going to make sound for 00:01:23
half of a second and then we 00:01:26
will wait for one second 00:01:27
before we start again 00:01:30
so that's where we have to wait 00:01:34
but be careful because sound for half 00:01:36
of a second and waiting for one 00:01:38
more second does not mean that the 00:01:40
whole program will last one and a 00:01:42
half seconds because the moment that we 00:01:44
start the sound we start the waiting 00:01:49
to see 00:01:51
that means that while we're waiting there 00:01:52
is also sound continuing so here it 00:01:54
means that we're going to be waiting 00:01:57
for one second but during this second 00:01:59
half of it will have sound 00:02:02
so here we have a square wave 00:02:05
half of the second is going to 00:02:09
be sound and the second half will 00:02:11
be no sound because we're waiting for 00:02:13
that one second to finishing the 00:02:16
program 00:02:18
okay so if we start the simulation 00:02:27
now let's change the frequency from fifty 00:02:39
to one hundred hertz 00:02:41
and try again it sounds different 00:02:44
because the frequency is higher 00:02:49
it sounds different because the frequency is 00:02:53
high now let's try this instead of 00:02:55
producing sound for half of a second 00:02:57
let's do it for zero point seven 00:03:00
seconds 00:03:02
and that means that seventy percent of 00:03:04
the time there will be sound during 00:03:06
the seventy percent of the time we 00:03:08
are waiting 00:03:10
so let's produce this sound now again 00:03:14
can you hear 00:03:22
can you hear that there's a period 00:03:24
of time while there's no sound and 00:03:25
it's shorter than before so there's sound 00:03:27
four point seven seconds and then no 00:03:29
sound for point three seconds this is 00:03:31
the simplest way of programming a buzzer 00:03:34
but we're going to make the program 00:03:36
a little more complicated we are going 00:03:37
to program it using a 00:03:40
different sequence 00:03:43
with a loop 00:03:44
okay so now you can see this 00:03:51
code this word here means loop this 00:03:53
is a program we have from before 00:03:57
the same one and we are going 00:03:59
to put it inside of the loop 00:04:00
so there are two drop-down possibilities counting 00:04:03
upward or downward so we will either 00:04:06
move up or down 00:04:10
so the first thing that we need 00:04:12
is a variable 00:04:13
this 00:04:19
this purple ok the name for this 00:04:21
variable is tono you can name it 00:04:24
frequency or tone whatever you want so 00:04:25
with this variable we are controlling the 00:04:28
frequency we are going to sweep frequencies 00:04:31
from ten hertz to one hundred and 00:04:34
thirty hertz and each time it jumps 00:04:36
by twenty units 00:04:39
is moving upwards 00:04:41
okay I will show you an example 00:04:44
it's first frequency and then hurts 00:04:46
to the second one is ten plus 00:04:51
twenty so thirty thirty plus twenty is 00:04:52
fifty then fifty plus twenty seventy then 00:04:55
ninety one hundred ten and one hundred 00:04:59
thirty is the last one so each 00:05:01
time we jump we're adding twenty units 00:05:03
according to the program and this is 00:05:06
the meaning of twenty here and 00:05:08
we're starting with ten and ending with 00:05:10
one thirty 00:05:12
here we have the variable we are 00:05:15
going to use to store the numbers 00:05:17
and tier having upwards means that the 00:05:20
numbers will get higher or count up 00:05:22
we could also choose to move downwards 00:05:25
but in that way we will start 00:05:27
with one thirty and finish at ten 00:05:29
okay 00:05:32
so i think now you can see 00:05:34
that we have a lot of possibilities 00:05:35
in this loop it's the same set 00:05:38
from the previous example that is now 00:05:40
inside the loop so listen to the 00:05:42
simulation 00:05:44
and you will be able to hear 00:05:47
the frequencies get higher until it loops 00:05:49
and starts all over again 00:05:52
okay let's start a simulation 00:05:58
you are how it's going up getting 00:06:10
higher 00:06:12
frequency is getting higher so this second 00:06:14
program is what you are going to 00:06:16
reproduce as well as answer two more 00:06:17
questions below 00:06:19
good luck 00:06:23
Idioma/s:
en
Autor/es:
David Gonzalez Arroyo, Alyssa Fantel
Subido por:
David G.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
60
Fecha:
24 de febrero de 2022 - 0:05
Visibilidad:
Público
Centro:
IES MARIE CURIE Loeches
Duración:
06′ 25″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
74.18 MBytes

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