IOT BASED HOME AUTOMATION

Step 1: 1st connect the circuit diagram as given above.

Node MCU 8 Channel Relay Module

D1 IN1

D2 IN2

D3 IN3

D4 IN4

D5 IN5

D6 IN6

D7 IN7

D8 IN8

1. Use USB Power… Great for loading programs, but not so good if you want to actually have your project disconnected from the computer.
2. Provide 3.3V directly… This is a strong option. With your own off board regulator, you can provide a robust power source for your device.
3. Provide Power to VIN… The regulator is rated up to 800 mA. In may cases, that is more than sufficient. Care should be taken to keep track of your load if your intent is to power other devices from the 3.3.V pin.

Step 2: Upload the program into Arduino UNO using Arduino IDE and open serial monitor, this will showing you some IP address. Note down this IP address.

Step 3: After the successful code upload, download the App from given link.

Step 4 : Enter the IP address of NodeMCU

Now enjoy project is running successfully.