how to configure the Blynk app to control any home appliances through the internet. In this tutorial video, I have explained how to connect multiple NodeMCU ESP8266 networks with the same Blynk account to make this home automation system. Push Buttons 4nos Tutorial video on ESP8266 Blynk Home Automation.Required Components for Blynk ESP8266 Project:įor each room you need following components: There is no limitation with the number of NodeMCU or ESP8266 that you can connect with this networks. In similar way you have to add NodeMCU to the network as per the room number. Now if you have two rooms, then you can use 2 NodeMCUs and 2 Relay Modules as following: I have used a 5V 2Amp mobile charger to supply the circuit. I have used the INPUT_PULLUP function in Arduino IDE instead of using the pull-up resistors with each switch.Īs per the source code, when the control pins of the relay module receive the LOW signal the respective relay will turn on and the relay will turn off for the HIGH signal in the control pin. The circuit is very simple, I have used D1, D2, D5 & D6 GPIO to control the 4-channel relay module.Īnd the GPIO SD3, D3, D7 & RX connected with pushbuttons to control the relay module manually. Control Relays Manually from Push-Buttons Circuit of the NodeMCU Home Automation.Tutorial video on ESP8266 Blynk Home Automation.Required Components for Blynk ESP8266 Project:.
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