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There is great confusion about the term
smart device for the home, because a

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device alone is difficult for it to
be smart, because when we talk about

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smart devices for the home, we
refer to domotic devices capable of communicating with

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other devices through a domotic controller as
a Joomasist. This is what really gives

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a set of devices something like intelligence, although in reality intelligence we have to

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put it ourselves. And for a
system to be catalogued as such, it

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is essential to have two types of
devices, those that are able to capture

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information from the environment through sensors and
those that are able to perform actions on

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electrical things or appliances through actuators and
get to have an intelligent system is that

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some communicate with others so that they
automate tasks of our house, like if

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they hate water under the sink,
that they send a notification to the flood

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cell, if it is very windy
or it is raining, that they pick

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up the awnings or the blinds or
if it is eleven o' clock on

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Saturday night that puts a romantic light
and enig en annexa to this type of

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intelligence. We mean smart devices for
the home. Let the sensors detect something

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and inform the automatic server to send
orders to the actuators and do something automatically.

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It' s the basis of any
home automation system. The automations.

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Hence the importance of domestic devices is
intelligent devices. In another chapter I will

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talk about automations more in depth,
because today I want to focus precisely on

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this, on the types of domestic
devices, whether sensors or actuators, because

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although there are hundreds of smart devices
for the home and these can be classified

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into sensors and actuators, all can
be grouped into two large groups, those

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that depend on the Internet, the
manufacturers and the servers and those that,

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in other words, not those that
subject you and to which you can submit.

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Although to get here first we'
re going to have to differentiate the

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smart devices that function as sensors and
those that function as actuators. Welcome to

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technology for everyone, the podcast where
I talk about ardui and not home automation

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programming, and everything related to Mikel' s movement my name, Luis del

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Valle, and you can find me
on the Internet in easy programming. I

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' m going to start by talking
about the domotic devices that function as sensors,

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and it' s that a sensor
is nothing more than an apparatus capable

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of measuring different physical or chemical magnitudes
and transforming them into another easy- to

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- understand magnitude. We can think
of technical, acoustic or magnetic sensors,

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for example, their function is to
capture a physical magnitude to convert it into

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an electrical signal and then into a
digital or analog signal for easy understanding and

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treatment. Then there are the automatic
actuating devices. An actuator makes the reverse

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path because, starting from a digital
or analog signal, it converts it into

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a physical magnitude, such as luminous
intensity, force or magnetic field. The

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actuator we are going to use in
domotics are certainly the relays that when it

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receives a signal, it energizes a
coil to separate or join a contact and

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thus allow to flow the alternating current. And this will allow us to turn

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on or off electrical appliances, such
as the home bulb, but it can

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also be treated as actuators, a
smart speaker, a motor or a screen.

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Having this in mind, we need
to understand what the function of a

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home automation device is, because if
we install a home automation device, whether

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it' s a sensor or an
actuator, and we don' t connect

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it to the tomotic server, like
Homa Eastan, it won' t be

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able to interact with the rest of
the devices. I mean, if you

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don' t send the temperature sensor
data from the fridge to the server,

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it' s hard for me to
warn you in case the temperature is too

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high. To get all this,
we' re going to need to connect

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the devices to the same data network
as the topotic server. And here comes

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the first breakthrough of free home controllers, because, by being installed in your

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own home, if the need to
connect to the Internet, it is possible

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to communicate all devices through your own
local network. This does not happen with

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all tomatic devices, because, as
we will see later. There are devices

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that require an Internet connection to work, but either send the data over the

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Internet or through your home' s
local network. All devices must be sensors

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or actuators, communicate with the server
and communication technologies must be interconnected. There

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are many whitfie ethernet TZIG, bet, WATHREAT, Radio mater, frequency,

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Plutoth infrared. The list can be
very large and, depending on the type

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of device, will use one technology
or another, although the important thing is

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that many of them can be integrated
with Homasistant. So let' s recap

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what we have so far. Domotic
devices can be sensors or actuators. Sensors

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collect information from the environment to send
it to the home automation controller and actuators

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receive information from the home automation controller
for actions on electrical things or appliances.

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A few examples that when the fridge
sensor reports that the temperature is very high,

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I send a message to the phone
saying abnormally you have left the door

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open again. That when the test
presence sensor someone comes in loaded with shopping

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bags home, the hallway light turns
on automatically. Or what is the flood

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sensor of testac water cut water by
activating an electrovalvula. And all this is

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possible thanks to automations, which basically
what they do is listen to the sensors

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and according to rules determined by us, of course, sends signals to the

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actuators. And although we can have
domotic devices like sensors and actuators and they

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can use different communication technologies, all
absolutely all can be divided into two large

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groups, devices that depend on the
Internet and servers, manufacturers and devices that

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do not depend. Go start talking
about the dependent domotic devices to see that

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' s how we all started.
I mean, it' s normal instead

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of tsar with home automation buying a
device that depends on the manufacturers, for

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example, you have a lamp in
the living room and you' re the

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very thing about having to bend down
the back and understand it every night and

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then have to turn it off.
When you go to sleep in this situation,

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it is normal to enter Amazon and
buy a plug of those that call

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intelligent and, once the device arrives
home, you install it, download it

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and configure the app on your mobile
and turn on and off the light from

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the app. And that' s
fine, because you avoid having to bend

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your back. Besides, you'
ll be able to turn off the light

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from the comfort of the bed.
But this is neither automatic nor intelligent,

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because home automation, as its name
rightly says, is designed to make things

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work alone that is all automatic.
And maybe, with a little luck,

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the app you' ve installed will
allow you to do some automation or you

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can even integrate it into some smart
speaker like Alexa or Google hom and create

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some kind of automation that allows you
to turn it on at six o'

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clock and turn it off at the. But what if one day you stay

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on the Internet or fail the servers
or retire the ceo of the company that

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it is your turn to bend the
back aside from having to connect to a

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server that is ten zero kilometers away
to light a light that is less than

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a meter away, what do you
want me to tell you. I see

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it as absurd not to mention the
mess of applications that you can get to

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have, because each manufacturer uses its
own application that is incompatible with the rest

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of applications. And for you to
understand the concept of manufacturer dependence, let

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' s see an example of the
process that follows the information. When we

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want to turn on the light with
these types of devices, the first thing

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we would do is take out the
mobile and give the light button, and

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this what it does is send the
command to the server over the Internet.

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Then, thousands of miles away,
the server receives that command from the ignition

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after locating the device. Hey it' s here on this ipeo or I

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have to communicate with this particular device
send back the command to your home towards

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the same device or by branding the
Internet. Finally, the device receives the

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order and turns on. Let'
s go that to turn on a light,

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the command has to cross half a
planet and this is the typical operation

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of any device that could be helly
Phillips or softhies, to give a few

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examples, because if you use them
just by buying them without modifying them,

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they depend on the Internet and the
server is operational. So, if there

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' s a zombie apocalypse and the
Internet goes to hell or if the servers

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burn or the company closes because the
ceo retires, your devices stop working and

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your home automation system if you only
use these types of devices stops working.

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So what do we do with these
devices. I mean, you may already

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have some device of this kind installed
at home and you want to urge homassist,

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but you don' t know very
well what to do with them.

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You throw them to the clean spot
in which container they go, because quiet,

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most likely you don' t have
to throw them anywhere. You'

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re interested in learning more about this. Well, I' ll explain this

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in another chapter of the podcast,
because now we' re going to talk

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about the other types of devices,
the independent ones. If a dependent home

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automation device requires the Internet and the
manufacturers' servers, the independents only need

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two things that depend exclusively on IT, a local data network, such as

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the WiFi network, but it can
also be decid B and ZETA, WABE

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or any other type of network and
a TOP controller like homa sesta have installed

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on your own server. Therefore,
independent devices do not need the Internet,

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they do not depend on the servers
of the manufacturers, because they communicate with

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your own server and your data.
They' re always safe in your home

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automation system,' cause what do
you want me to tell you that a

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company knows when I' m shitting, when I open the fridge when I

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get home, it' s not
fucking funny to me. And this is

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achieved in a very simple way,
if you manage to modify the dependent devices

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in any way so that, instead
of sending the data to the server,

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you send them directly to your home
automation server. This makes the process of

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communicating with the server very different,
because, instead of sending the data to

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external server over the Internet, which
may be in a Vietnam jungle, the

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whole process takes place inside your home, without relying on the Internet, without

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depending on the servers, the manufacturers
or if the ceo retires, getting a

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totally private system, because the data
never leaves your home. But how we

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can turn a dependent device into an
independent one. I' ll talk in

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another chapter. For the moment we
leave it here, but first let'

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s take a look at everything we' ve seen in this chapter. We

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started the chapter by seeing that there
are two types of devices, sensors and

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actuators. Sensors are responsible for collecting
information from the environment to be sent to

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the home automation server. Actuators are
responsible for acting on things or devices when

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they receive information from the home server. For both sensors and actuators to communicate

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with the home automation server, technologies
such as WiFi, ETHERNETHIC or tzig B,

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among others, are used. Each
device can use one or more of

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these technologies. The objective is that
through the home automation server, sensors and

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actuators are in constant communication. This
will allow us to perform automations as if

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the test water flood sensor closes the
valve if it raises the temperature of the

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refrigerator that sends an open door message, or if the test door sensor that

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has been opened makes a siren sound. And all this is achieved through automations.

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The essence of any dopmotic system,
whether a device, sensor or actuator

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that uses one communication technology or another, can all be divided into two large

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groups, those that depend on manufacturers
and those that do not. Manufacturer-

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dependent devices need to have an Internet
connection and the manufacturer' s server is

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operational. If any of this fails, it stops working and independent devices do

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not need internet connection or manufacturers'
servers because they communicate through your local network,

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your home, your own automatic server. Everything remains at home and so

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far today' s chapter. In
the next one I' ll go into

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the devices that depend on the manufacturers
and why you shouldn' t throw them

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away. We leave this for next
week. As I always say, we

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listen very soon. Don' t
miss the date and remember to be happy