Control Home Appliances Using Node MCU and Google Assistant | IOT | Blynk | IFTTT

A simple project to control Appliances Using Google Assistant:

Warning: Handling Mains Electricity can be Dangerous. Handle with extreme care. Hire a professional electrician while working with open circuits. I won't take responsibilities for the damages caused. Have a safe experience.

Do check out my Youtube Channel:

Parts used:

NodeMCU

Relay

Jumpers

Bulb and holder

Cut wire into two pieces and Strip the ends.

Screw the wires to the bulb holder

Connect the Wire from Mains to Common.

Connect the wire to the bulb in Normally open.

Connect jumpers from Vcc of Relay to Vin of nodemcu, Ground to ground and input 1 to D4.

NodeMCU board manager URL http://arduino.esp8266.com/stable/package_esp8266com_index.json

Code: https://github.com/sairushan/IOT

WebHooks URL: http://188.166.206.43/Your Authentication token/update/D2?value=0

The pin number specified here is the GPIO pin of the NodeMCU and not the physical board number.

Once the action is triggered, A web request is made. This turns the Relay-ON.

Similarly a trigger can be made to turn off by using Value=1 and body "[1]"