Arduino Tut. #8 - Arduino Tone & Sounds - Super Mario Theme Video Lecture | Drones for Beginners: How to make Arduino Drones - Electronics and Communication Engineering (ECE)

how's it going guys welcome to the
eighth or Doudna tutorial and as you
have probably already guessed today
we're going to discuss the tone library
for the Arduino and how to actually
output some sound into a project those
of you who are looking to add a little
voice notification or play some kind of
a melody so this is a piezo speaker as
you can see so I'm going to show you how
to hook it up how you can use the tone
library what kind of outputs you can get
on this so without any further delay
let's get started alright so as you can
see I've created a fairly basic circuit
you got our piezo speaker notice the
plus on the top of the lid so make sure
that goes to your positive lead you got
your negative ad coming out through a
180 ohm resistor and then this is going
to the ground the positive and I
currently have it on pin allowed and set
up you can go to any digital pin and as
you can see what the tone library it's
fairly simple to change pins if you're
looking to use something more powerful
than this as an example a just a regular
sized speaker you're going to have to
use a drive circuit and if you're
interested on how that works please
check out the extended version of this
tutorial I'll fully explain how to hook
up a full speaker because you're going
to have to use a transistor in that case
but for this guy the only thing you need
is a resistor and a couple of wires so
let's take a look at the programming
side alright so as you can see I'm using
the tone function of the Arduino library
tone and let's quickly go through the
description and see what this function
actually does so as you can see
generates a square wave of the specified
frequency at duty cycle on a pin you can
specify a direction a duration otherwise
it will continue until you call the node
tone function the pin can be connected
to a Piazza buzzer or other speaker to
play tones in my current setup I'm using
a exactly that so you can only play a
single tone if there is a tone a
ready plane on a different pin you will
have to basically interrupt that tone
before playing something else otherwise
that call will be just simply ignored so
the use of the tone function will
interfere with the PWM outputs on pins
three and eleven on boards rather than
mega which means that you cannot be
playing a tone and outputting pwm
signals on those pins it is not possible
to generate tones lower than three one
Hertz so this is just a hardware
limitation for Arduino and if you want
to play different pitches on multiple
pins you will need to call no tone on
the pin before calling the next tone to
play so this goes back this goes back to
the single tone pair for Arduino plane
so you can either call it pin frequency
in this case it's going to go on until
you output the node tone function or you
can specify a duration in milliseconds
as you can see down here the frequency
is specified and Hertz and obviously the
pen is your Arduino pin and you can also
see different tutorials that the Arduino
website already has set up for you so
let's take a look at this
basically this point so you have your
void and void setup and void loop
functions and we can right ahead and
specify a tone phone function so pin 11
4000 Hertz and let's do it for one
second I'm going to leave a quick
comment so this is 4000 Hertz for one
second so it's very fired very simple
sketch and upload it to the Arduino so
you you should be able to hear the very
small - I've just uploaded I'm not going
to actually show to you so if I reset
the Arduino you can hear it again so one
second 400 Hertz tuned so if we want to
make this a little bit more fun let's
put a for function
which is basically going to cycle
through different tones so getting this
problem again I had fixed it before with
the cursor so I apologize for that
so it goes from 31 to 10,000 Hertz and
then we have an I plus plus that's your
four function so in this case we're
going to play on going to put I in there
and I'm going to introduce a delay of 10
milliseconds so this should do is it
will cycle through um it will cycle
through different frequencies of tones
and you are going to hear it in just a
second and basically it's going to loop
this until it's done so let's take a
look at the sound produced by this one
so hopefully you can hear this pretty so
it goes through very low very high
frequency sorry too from very low
frequency to a very high-pitched
frequency so 31 hunt all the way to
10,000 Hertz
so as you can see it becomes a very
high-pitched and obviously you can do
anything in between let me just take
this off for a second because it's quite
annoying let's take a look at some of
the other examples that other people
have alright so this is a Mario sketch
created by a different user other than
myself
I've actually I was actually very
impressed to showcase something like
this so I want to actually took the time
and to create a very short but very
interesting iconic Mario tune so as you
can see person has included the tone
that each library created a tone setup a
begin on pin 11 and then looped all your
tones along with the frequencies and
their lengths to that pin so the result
is actually quite spectacular so I'm
going to upload this to the Arduino and
we're going to take a look at what this
actually creates for us alright so I
have uploaded the Mario sketch to the
Arduino and you're about to hear one of
the most iconic video game tunes so I'm
sure most of you know it here it goes
so one thing to notice is that this tune
is actually going at a much quicker rate
I believe you can change all the times
that you have in your code to match the
actual pitch of the original song and I
think it's just because this was written
for a previous version of their dunno so
for whatever reason you're getting the
sped up version on the piazza speaker in
any case if you're interested in
creating your own tunes if you are
interested in adding some kind of a
voice notification to your Arduino you
can definitely do so with the piezo
buzzer or the speaker and as well as the
tone library so if you have any
questions with regards to the tones what
kind of outputs you can get out of this
or if you just want to share something
you've done feel free to do so in the
comments thank you guys bye