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Hello Innovators welcome back to another article of YK Electrical hope you guys are doing Good….

In this article we will see how to control an electric remotely. We will learn how to accomplish this target as this will be controlled over the internet. We can control it from anywhere.

Node MCU

Relay 5V

Resistor 1KΩ

Resistor 10KΩ

Transistor BC547

Diode 1N4007

2 Pin Terminal Block

Voltage Regulator 7508

12V Female Pot

Ordering PCb from JLCPCB is quite simple and easy.

You just have to add your gerber file (max upto 6 layers) , select layer and add to cart then checkout securely and the sum. That's it no your designed PCB is at your doorstep.

NodeMCU is an open source firmware for which open source prototyping board designs are available. The name "NodeMCU" combines "node" and "MCU" (micro-controller unit). Strictly speaking, the term "NodeMCU" refers to the firmware rather than the associated development kits.

 Now we have our glossy looking PCb with us, which we ordered from JLC PCB. It’s time to solder all the above-mentioned components to the board. After soldering our board will look like this.

Refer this Diagram for your connection

The working of this project is very simple. At first lets understand the concept behind our project

At first we have to program our Node MCU with the proper SSID and Password. So that when it will bw ON it can connect with the Internet. In the next step we have to provide the channel number and other required things in our code so that it can be properly synchronised with the remote client we are going to use. In our case Mobile phone is our remote Client. 

Remote client is the authorised controller through which all the device associated with our Node MCU can be controlled.

1. In the first step we have to mount our Node MCU in its desired Place.
2. Give power supply to the Node MCU at Vin and GND.
3. Now connect the terminal of the bulb at the Rela

That’s it for today, stay tuned for such intresting projects..