Hello, friends welcome to Tech StudyCell in
this video will make a very useful Home Automation project using the Tasmota and ESP32 to control
8 appliances with Alexa and also from the manual switches. to make this project I have just use ESP32,
relay module, and DHT11 sensor. You don't need any coding knowledge, anyone
can make this project within 5 minutes. I have not used any third-party app to make
this project, and I will share the complete circuit diagram and all other details but
before going to that, let me show you how this project works. "Alexa turn on Outdoor Light", you can see
the lamp turns on. now I can also control it from the Amazon
Alexa app. now let me control it from the manual switch, and you can see the real-time
status in the Amazon Alexa app. let me turn it on, and you can see the status updated.
in a similar way I can control all the lamps from the manual switch and also from the Amazon
Alexa app. let me turn off all the lamps. you can see all lamps are turning off one
by one. and you can also control these lamps from the Tasmota dashboard. you can also monitor the real-time temperature
and humidity from the DHT11 sensor. let me control it from the Tasmota dashboard.
and you can see I can easily turn on and off the lamps. let me turn off the lamps from the manual
switch and again you can monitor the real-time feedback in the Tasmota dashboard. now let me turn off the Wi-Fi and show you
how this project works without the internet. after turning off the Wi-Fi I can only control
these lamps from the manual switch. there is no specific ON/OFF position. whenever you press the switch the current
state of the lamp will be changed. so you can see I can control lamps without
internet. you can also use the push-button for that. now let me turn on the Wi-Fi again. after turning on the Wi-Fi the ESP32 will
automatically connect to the internet. then again we can control appliances with
Alexa. "Alexa turn off all the lamps" and you can
control these appliances from different Wi-Fi networks with Amazon Alexa app. only the ESP32
and ECHO DOT should be connected with the same Wi-Fi network. so this is a very useful Home Automation project
and I will really appreciate it if you support us on Patreon. I will share all the links in the video description. now without any further delay, let's get started... To make this project you need the ESP32, 8-channel
relay module you can use your existing switchboard or you can also use the push button to control
the appliance manually and this is optional if you want you can use this DHT11 sensor,
and to control appliances with Alexa, you need an ECHO DOT or any other Alexa device. now I 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, DHT11 sensor, and relay module, and these pushbuttons are connected across
the GPIOs and ground pin. now if you use switch, then you can refer
to this circuit. you have to connect the switches across the
GPIO pin and ground pin as per this circuit. and to connect the appliances with the relay
module you can refer to this circuit. ESP32 GPIO will be connected with these control
pins and these are the AC appliances connected with the relay module. now if you want to use a 4-channel relay module
can you can refer to this circuit to connect 4 channel relay module with ESP32. as you
can see there are a lot of connections to make the circuit compact, I will use this
PCB for the project, but you can use the ESP32 and relay module to make this complete project. now let me connect the ESP32 with the PCB
then I will connect is DHT11 sensor. now we can connect external switches with
the PCB using these pins. you can directly connect the switch or any other external switch
with these pins. but here I will control the relays from these push buttons. but as I said you can use both push-button
or switch to control the relays as per your requirement. now I will connect the ESP32 with the laptop
to flash it with Tasmota firmware. for that first, you have to visit this article. I will share the link in the video description. then click on these two buttons to download
the Tasmota firmware and the flashing tool. for this project, I will use this tasmota32.bin
file. Let me click on this link to download the
file and I will use this ESP Flasher tool to flash the ESP32. You can download the tool as per the system
you are using. here I am using Windows 64-bit systems, so
I will click here to download the ESP flasher. after that let me go to the download folder,
and here you can see, you need just these two files to flash the ESP32. now let me open the ESP Flasher tool. we have already connected the ESP32 with the
laptop so let me select the COM port. then click on browse, and select the tasmota32.bin,
which you have just downloaded. then click on open. after that click on this "Flash ESP" button. now I have to press and hold the boot button
of ESP32. now you can see the flashing process started. it may take some time. after the flashing complete, you will find
a hotspot name and IP. Now we have to connect with this Hotspot and
enter the IP to update Wi-Fi credentials. So I will click here and here you see, I have
to select this Hotspot and click on Connect. it Will redirect to this page where you can
update the Wi-Fi credentials. but if you face any issue then just copy this
IP then go to the browser and paste it here, and press the enter. again you can access this page then enter
the Wi-Fi name and password after that click on Save. you have to copy this IP then again
connect with the Wi-Fi. Then paste the IP in the browser. and here
you can see this is the Tasmota dashboard where we will do all the configuration. first, I will click on this "configuration",
then click on "configure module", so here you can see you can configure all the GPIO
of ESP32 from this window. let me open the Notepad file and here you
can see the GPIO pins connected with the relays and these are the GPIO pins connected with
the switches or push buttons. so first, I will configure all the GPIO connected
with the relays. let me go to the browser, relay-1 is connected
with the GPIO-23, so here I will select Relay_i as I am using the active-low relay module.
if you use the active-high relay module then just select "Relay" here. So let me select the "Relay_i" as I am using
an active-low relay module. and here I will select "1" as this is the first relay. now, relay-2 is connected with the GPIO-22. so here I will select "Relay_i" and this is
a second relay, so I will select "2". in a similar way I have to configure all the
GPIO pins connected with the 8 relays. So here you can see, we have configured all
the GPIO pins connected with the relays. again I will go to Notepad. now I will configure all the GPIO pins connected
with switches. as per the circuit, GPIO-13 is connected with
Switch-1. so if you use Switch (latched), then you have
to select "switch" here. but as I said here I am using buttons so let
me select "Button" here. this GPIO pin is connected with the first
button/switch. so here "1" is selected. The GPIO-12 connected with the switch-2, so
again here I will select button and here I have to select "2". and as I said if you use
switch then select the Switch at this place. In a similar way, I have to configure all
the GPIO pins connected with the buttons. after that, I have to configure the GPIO-16
where the DHT11 sensor is connected. if you want to use any other sensor then select
the sensor from the dropdown. let me select the DHT11. now after doing all these configurations,
you have to click on the Save button. then click on the main menu. In the Tasmota dashboard, you can now monitor
the temperature from the DHT11 sensor. please ignore the ESP32 temperature, this
is not accurate. and here you will find the 8 buttons to control
relays from this dashboard. let me press these buttons to turn on the
relays. here you can see if I press the button respective relay turns on. let me turn off all the relays from the pushbuttons.
and you can monitor the real-time feedback in the Tasmota dashboard. Thus you can easily control the relay module
from this dashboard. now let me connect Amazon Alexa with Tasmota
to control the devices with Alexa. for that again I have to click on this "configuration". Then I have to click on "configure other". here we have to enter the friendly names for
all the devices. let me enter Smart home here, this is a project
name. then let me enter the friendly name for the
first device. Alexa will identify the first device with
this name. so whenever you say "Alexa turn on study lamp",
it will turn on the first device. In a similar way, you have to enter the friendly
name for all the devices. you can give any name as per your requirement. after that you have to select the "Hue Bridge
multi-device". then click on "Save" then go to "the main
menu". now let me quickly configure the Amazon Alexa
app to add all the Tasmota devices. First, I will open the Amazon Alexa app then
go to the “Device”, then tap on this "+" icon and select "Add device", then tap on
the "Light" then select "Other". now tap on the "Discover devices". during this time the ESP32 echo dot and the
smartphone should be connected with the same Wi-Fi network. you can see Alexa found 8 devices. Now I will go to "Devices", and in the "Lights"
we can see all the devices connected. now let me control it from the Amazon Alexa
app. and you can see, I can easily control it with the Amazon Alexa app. now let me connect
the smartphone with the different Wi-Fi network. let me turn off the Wi-Fi and turn on the
mobile data. and you can see still I can control the relays from this Amazon Alexa app. So if the echo dot and the ESP32 should be
connected with the same Wi-Fi network, then you can control this device from the Amazon
Alexa app from anywhere in the world. now I will connect the eight lamps with the
relay module as per the circuit diagram. as you can see I have connected these lamps with
the relay module as per the circuit. "Alexa turn on outdoor light", "Alexa turn
on Studio light". I can easily control it with Alexa. now let me control these lamps from the pushbuttons,
and again I can easily control all these lamps. so this is a very useful Home Automation project
you can make without writing a single line code. and you can also join our Telegram channel
Tech StudyCell for more such Home Automation ideas. I will share the link in the video description. If you find this video helpful in please hit
the like button and share it with your friends and don't forget to subscribe for more such
videos. thank you for watching have a great day.
