Code_NodeMCU_Blynk2_4Relay_Switch_ for Home Automation system.
Required Components :
- 1. NodeMCU
2. 4-channel Relay Module (5V)
3. witches 4
- 1. Download the Blynk App from Google play store or App store.
- 2. Create a new project in the Blynk app. Enter the project name and choose the device. In this IoT project, I have used NodeMCU, so I have selected NodeMCU.
- 3. After that Blynk will send an Auth Token to the registered email id. The Auth Token will be required while programming the ESP8266.