Home Automation System Using Smartphone and Bluetooth

Hello everyone welcome to "Techno-E-solution", In this tutorial I will show you how to make Home Automation System Using Smartphone And Bluetooth. For this project we are going to Use Arduino Nano as a microcntroller and hc-05 bluetooth module for Conncetivity purpose. The Blynk app are used to control the hole system of this project, So without wasting time let's get started...........

Step 1: MATERIAL REQUIRED

The following material are used in the project

• Electronic Components :-

1. Arduino Nano
2. Bluetooth Module (hc-05)
3. 8-Channel Relay Module
4. LM 2596 DC-DC Buck Convertor
5. Red LED (5mm)
6. Resistor (470E)
7. Male - Female Berge Strip
8. 2-Pin Block Connector
9. Female-Female Berge Connector Wire
10. Single Layer Copper Clad PCB Board
11. Power Supply (12V, 1amp)

• Hardware / Other Material :-

1. PCB Drill Machine
2. Mini Hack Saw
3. Ferric Chloride
4. Container
5. Soldering Kit
6. Iron
7. Photo Paper
8. Laser Printer (Tonner Filled)

Step 2: CIRCUIT DIAGRAM

I make this Circuit in "Easy EDA" and I also make a PCB Layout of this project. So you can easily make the circuit & PCB.

PCB Tonner transfer Technic

Download Following PCB Layout Print on photo paper.

Download PCB Gerber File:- Click To Download

Next PCB

NextPCB is a high-quality PCB Manufacturer. With professional PCB manufacturing capabilities, our PCB engineers with more than 10 years of experience will double-check your engineering files.

NextPCB is certified by IATF16949, ISO9001, ISO14001, UL, CQC, RoHS and REACH; more importantly, we handle the whole process including the PCB prototype, PCB manufacturing, PCB assembly, testing, and final shipment. We are capable of assembling BGA, Micro-BGA, QFN, and other leadless package parts. We also have an online parts shop, you can choose any parts you need.

If you are want to make PCB go through the NEXT PCB

Step 3: LET'S MAKE PCB

Follow the following process for Making PCB Using Tonner Transfer Technic.

1. Take a Single Sided Copper Clad PCB Board
2. Cut the PCB as per PCB Layout
3. Remove the dirt & rust from the PCB by using wire scrub or sand paper
4. Place layout print on PCB & Heat the PCB with the help of Iron for 5-10 Min
5. Take water in the container & deep the PCB into the water for 5 min
6. Slowly remove the paper from the PCB
7. Now take 2-3 spoon of ferrite chloride powder in container with water
8. Deep PCB into the solution for 5-10 min for etching process
9. After etching completed clean the excessive tonner from the PCB
10. Drill The PCB with the help of PCB drill machine
11. Now place app components on PCB & Solder It
12. In this way the PCB board is completed.

Step 4: BLYNK APP INSTALLATION & SETUP

Let's Setup the BLYNK app

1. Install Blynk App from google play store.
2. Create Account On Blynk.
3. Create New Project.
4. You will get Tocken on your E-Mail.
5. Give Name to Project.
6. Select Device & Connection Type & click on Create Button.
7. Select Bluetooth, then add 8 buttons.
8. Give name to Buttons.
9. Set the Pins.
10. The app setup is completed

Step 5: ARDUINO CODE

1. Add Blynk library in your Arduino IDE
2. Sketch-Include Library-Manage libraries-Type Blynk-Install
3. Copy Following code & Upload to Arduino Nano (Remove Bluetooth Module)

/*
 * Hello Friends Welcome To Techno-E-Solution
 * Here is the Arduino Code for Home Automation by Techno-E-Solution
 */

#define BLYNK_USE_DIRECT_CONNECT

// You could use a spare Hardware Serial on boards that have it (like Mega)
#include <SoftwareSerial.h>
SoftwareSerial DebugSerial(0,1); // RX, TX

#define BLYNK_PRINT DebugSerial
#include <BlynkSimpleSerialBLE.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "AuthToken";

void setup()
{
  // Debug console
  DebugSerial.begin(9600);
  
  pinMode (12, OUTPUT);
  pinMode (11, OUTPUT);
  pinMode (10, OUTPUT);
  pinMode (9, OUTPUT);
  pinMode (8, OUTPUT);
  pinMode (7, OUTPUT);
  pinMode (6, OUTPUT);
  pinMode (5, OUTPUT);

  pinMode (12, LOW); // Set All Pins Low Beacause At The Starting All Relays get ON, Results In All load 
  pinMode (11, LOW); // Connected Across Relay Module Get Turn On 
  pinMode (10, LOW);
  pinMode (9, LOW);
  pinMode (8, LOW);
  pinMode (7, LOW);
  pinMode (6, LOW);
  pinMode (5, LOW);
  
  DebugSerial.println("Waiting for connections...");

  // Blynk will work through Serial
  // 9600 is for HC-06. For HC-05 default speed is 38400
  // Do not read or write this serial manually in your sketch
  Serial.begin(9600);
  Blynk.begin(Serial, auth);
}

void loop()
{
  Blynk.run();
}

Step 6: FINAL CONNECTION

1. Adjust LM2596 to 5V and Connect to the PCB.
2. Connect Relay module to PCB.
3. Give Power Supply.
4. Connect AC Load as per above circuit Cirgram.

Step 7: DEMONSTRATION

1. Open Blynk app.
2. Turn On Bluetooth.
3. Click on Bluetooth button & select hc-05
4. Now Smartphone get Connected to the Home Automation System.
5. Now you can control 8 Load by using your Smartphone.

Complete Tutorial Video On Youtube

Step 8: NextDFM Software From NextPCB

A PCB Design Problems Detector, An Engineering Solution Provider Import the Gerber file with one click. No need for complicated file reading steps to review easily and improve efficiency.

Download Software Help you quickly familiarize DFM design specifications and production needs to determine whether there are any manufacturing constraints

Features

Make PCB design more standard Prevent the quality flaw Impedance calculation function and lamination automation Automatically generate the best puzzle CAM350 free alternative version Check Gerber files anytime, anywhere and parse it with one click Instate Quote and evaluate delivery time Reduce cost and improve benefit these are advantage comparing to Eagle and Altium