HOME AUTOMATION
INTRODUCTION
COMPONENTS REQUIRED
Ordering PCB from JLCPCB
Node MCU
CIRCUIT DIAGRAM
WORKING
PROCEDURE
WORKING MODEL

Published September 26, 2022

Home Automation

We will see how to control an electric remotely. We will learn how to accomplish this target as this will be controlled over Internet.

IntermediateFull instructions provided2 hours154

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

Seeed Studio Grove - 2-Channel SPDT Relay

Resistor 10k ohm

Resistor 1k ohm

General Purpose Transistor PNP

1N4007 – High Voltage, High Current Rated Diode

Terminal Block Interface, Terminal Block

Linear Regulator (7805)

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)

Solder Wire, Lead Free

Story

HOME AUTOMATION

INTRODUCTION

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.

COMPONENTS REQUIRED

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

Ordering PCb from JLCPCBis 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.

Node MCU

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.

CIRCUIT DIAGRAM

WORKING

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.

PROCEDURE

In the first step we have to mount our Node MCU in its desired Place.

In the first step we have to mount our Node MCU in its desired Place.

Give power supply to the Node MCU at Vin and GND.

Give power supply to the Node MCU at Vin and GND.

Now connect the terminal of the bulb at the Relay

Now connect the terminal of the bulb at the Relay

WORKING MODEL

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

Code

cODE

Now in programming, first we need to include the libraries 
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).

char auth[ ] = "YourAuthToken";

// Your WiFi credentials.
// Set password to "" for open networks.

char ssid[ ] = "YourNetworkName";
char pass[ ] = "YourPassword";

WidgetLED led1(V1);
BlynkTimer timer;

// V1 LED Widget is blinking
void blinkLedWidget()  // function for switching off and on LED
{
  if (led1.getValue()) {
    led1.off();
    Serial.println("LED on V1: off");
  } else {
    led1.on();
    Serial.println("LED on V1: on");
  }
}

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(1000L, blinkLedWidget);
}

//In the loop function include Blynk.run() command.
void loop()
{
  Blynk.run();
  timer.run();
}

Credits

YK electrical

6 projects • 1 follower

Home Automation