Home Automation System using multiple NodeMCU ESP8266 network with Blynk | IoT Projects 2021

In this IoT project, I have shown how to make the Home Automation System using multiple NodeMCU ESP8266 network with Blynk. with this smart home project, you can control multiple NodeMCUs from a single Blynk account. So you can use multiple ESP8266 for different rooms, and control them with Blynk App.

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Download PCB Gerber file for this NodeMCU IoT based home automation project
https://drive.google.com/uc?export=do...

During the tutorial video, I have covered the following topics:
00:17 How to control multiple NodeMCUs for different rooms with Blynk & Switches.
02:33 Required Components for this NodeMCU project.
02:47 Circuit diagram of multiple ESP8266 IoT-based Smart Home project.
04:22 How to configure the Blynk App.
05:55 Programming the ESP8266 NodeMCU with Arduino IDE
08:09 Connect home appliances with the smart relay module.
08:02 Controlling multiple NodeMCU control relays from Blynk.

Required Components for each room for this NodeMCU home automation
1. NodeMCU
2. 4-channel 5V SPDT Relay Module
3. Push Buttons

Amazon India Affiliate links:
NodeMCU : https://amzn.to/3fJA4EG
4-channel 5V Relay Module : https://amzn.to/2BQ5Y3o

Amazon United States Affiliate links:
NodeMCU : https://amzn.to/2WoR2A2
4-channel 5V Relay Module : https://amzn.to/3r2HuJ4

Required Components for the NodeMCU control Relay Module PCB:
1. Relays 5v (SPDT) (4 no)
2. BC547 Transistors (4 no)
3. PC817 Optocuplors (4 no)
4. 510-ohm 0.25-watt Resistor (4 no) (R1 -- R4)
5. 1k 0.25-watt Resistors (5 no) (R5 -- R9)
6. LED 5-mm (5 no)
7. 1N4007 Diodes (4 no) (D1 -- D4)
8. Push Buttons (4 no)
9. Terminal Connectors
10. 5V DC supply

Download Code for this NodeMCU smart house automation project from the following article.
https://iotcircuithub.com/multiple-no...

** (Important) Please don't connect both NodeMCUs with the laptop at the same time. And also use different 5V power supply for each NodeMCU. Otherwise, the relays turn on and off may take place.

** In code, you have to change only the virtual pins according to the NodeMCU numbers.
** You can use different WiFi networks for each NodeMCU, but the Authentication Token should be the same for all the NodeMCUs.

Our Previous ESP8266 NodeMCU Blynk project.
   • Wifi Smart Home Automation system wit...  

During the internet of things tutorial video, I have explained all the steps to make this ESP8266 home automation system with Blynk to control all the home appliances with and without internet. If the NodeMCU connected with WiFi then you can control the relays from anywhere in the world. And you can also monitor the real-time feedback in the Blynk IoT applications. So with this smart house project, you can convert any appliance to IoT devices and control them through the internet.

#internetofthings #esp8266 #Blynk
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