Hello friends, welcome to Tech StudyCell. In this video, we will make an ESP32 home
automation system to control the eight appliances with the Blynk App, IR remote, and also from
manual switches. and I have used just ESP32, a relay module,
and IR receiver to make this project. so you don't need any custom design PCB for
this project. let me show you how it works. First, I will control these lamps from the
Blynk app and you can see I can easily control these lamps. I can use this button to turn off all the
lamps. now let me use this IR remote to control the
lamps and I can easily control it with the IR remote. and I can use this button to turn
off all the lamps. and you can see the real-time status in the Blynk app. now let me use the
manual switches to control these lamps. again you can see the real-time status as
ESP32 is connected with the Wi-Fi. now let me turn off the Wi-Fi and show you how it
works without the internet. now if Wi-Fi is not available the blue LED
will automatically turn off. so I can control from the manual switches. as you can see I cannot see the real-time
status as ESP32 is not connected with Wi-Fi. and I can also control it from the IR remote
if the Wi-Fi is not available. now let me turn on the Wi-Fi again. now ESP32 will automatically connect with
Wi-Fi and as you can see the blue LED turns on. so I can control it from the Blynk app again
and you can see can easily control it. I can also see the real-time status in the
Blynk app. So this a very useful IoT-based home automation
project as you can control the appliances from anywhere in the world through the internet.
and during the video, I will share all the details, circuit, code, so you can easily
make this project after watching the complete video. so let's get started. to make this home automation project you need
an ESP32, 8-channel relay module, and to control the appliances manually you can use the existing
switchboard or push buttons. now we have to connect all these components
as per this circuit diagram. in the circuit, you can see I have given the 5 volt supply
to ESP32 and a relay module. These switches are connected across the GPIO
pins and GND pin and the IR receiver connected with the GPIO-35. now if you use the push button, then you can
refer to this circuit. To connect the appliances with the relay module
you can refer to this circuit diagram. the circuit is simple, you can easily make
the circuit. but as there are a lot of connections so to
make the circuit compact, I have designed a PCB for this project and order it from the
jlcPCB. but as I said you can also make this project
without using any custom-designed PCB. but still, if you want to use this custom design
PCB, then download the Gerber file from the video description and order it from the jlcpcb.
you can easily order any custom design PCB from JLCPCB with three simple steps. first, upload the Gerber file of the PCB,
then select the parameters like quantity, masking color. then place the order. if you select a faster delivery service, then
you will receive the PCB within a week. and as you can see the quality of the PCB
is very premium in this affordable price range. so you can always try out JLCPCB for any custom
design PCB projects. These are the components required to make
the circuit on the PCB and after soldering all the components the PCB will be looked
like this. now I will connect the ESP32 with the PCB. Before programming the ESP32, I have to set
up the Blynk app for this project. I will open the Blynk App, then tap on "New
project". here I have to give the name for this project. you can give any name. then choose the device as "ESP32 Dev board",
connection type should be Wi-Fi. now I will tap on "create". Blynk will send the Authentication Token to
the registered email id which will be required in the code. now I will tap on "OK". Now I have to add 9 buttons. So, I will add 9 buttons from the "widget
box". after that I will tap on the first button. In the PIN, I will let virtual pin V1. With this button, I will control the Relat-1. As I am using an active low relay module,
so to turn off the relay I will send "1" and to turn on the relay I will send "0". and
the MODE will be "Switch". Thus, I have configured the first button to
control relay-1. in a similar way, I will configure the next 7 buttons with virtual
pin V2 to V8 to control all the 8 relays. Now I will configure the last button with
virtual pin V9. Let me tab on the button. and here I will
select virtual Pin 9 or v9 and the mode will be PISH. I will use this button to turn off all the
relays. and here I will type "ALL OFF". now I will exit from the setup. Let me resize the button. We have created all the widgets required for
the Blynk. Here you can see I have connected the IR receiver
with ESP32 as per the circuit. now I will connect the ESP32 with my laptop. These are the codes for this project. to download the code you have to visit our
website iotcircuithub.com. I will share the link of the related article
in the video description. then you can download the code from this button. now if you use the push button then you have
to use this code. For the Switch, you have to use this code.
and with this code, we can get the HEX code of the IR remote buttons. so first, I will upload this code to get the
hex code of the buttons. you can see the code is very simple. Here, I am using GPIO-35 to receive the hex
code. I will select the ESP32 board and a proper
port. then I will hit the upload button. after uploading the code you have to open
the serial monitor and select the Baud rate as 9600. now you can easily get the hex code of the
IR remote buttons. you just have to press the button and you
can see the hex code in the serial monitor. Here, you have to ignore the "FFFFFF". after getting the HEX codes, we can modify
the main code. so this is the code for the switches and you
need these libraries for this code. you can download it from the given links or
from the include library menu. here you can see these are the GPIO pins, I have used for
this project. and now I will update the Wi-Fi credential. here you have to enter the Wi-Fi name and
the Wi-Fi password. now to get the authentication token sent by
Blynk, you have to visit the registered email ID. just copy it and paste it here. now I have to update the hex codes for the
remote buttons. so I will go to the Notepad file where I have
saved all the hex codes. so this is the hex code of button-1. I will copy it and here I will paste it. in a similar way, this is the hex code of
button-2, this is the code of button-3. so you can use any remote buttons. you just have to update the hex code of the
button to control the respective relay. So after doing these changes we can directly
upload the code to ESP32. for that, I will go to "Tools", select the board as "DOIT ESP32
devkit V1", and the proper PORT. After that, I can hit the upload button. I have connected these 8 lamps with the PCB
as per the circuit. now let me turn on the supply. you can see the blue LED turns on. so I can control it with the Blynk. let me show you. now let me control with this IR remote and
I can also control it from these Switches. you can also use the push button to control
these appliances instead of switches. so this is a very useful project, you can
control it with Blynk, IR remote, and from the manual switches. You can also join our Telegram channel Tech
StudyCell to get different Home Automation ideas. if you like this project, then please hit
the like button, and share it with your friends. don't forget to subscribe for more such Home
Automation projects. thank you for watching have a great day.
