Research Paper for Smart Home Automation System using ESP32 with Blynk, IR Remote & Manual control Relay, IoT Project

Abstract

This paper presents an idea or a concept for home automation using ESP32 with Blynk, IR remote and manual switch to control 8 relays with and without internet and monitor the real-time feedback in the Blynk app. Automation of devices has a wide scope for this generation as well as for the forthcoming generation. In this context, mobile communication technology is playing a major role in the world of automation. This article is fully based on a low-cost and reliable home control monitoring system for accessing and controlling devices and appliances remotely using an Android-based smartphone application. While using this technology, the system improves the living standard at home, reduces human effort, is energy-efficient, and time-saving, thus creating a smart home. It is also very helpful for providing support to disabled people and fulfilling their needs at home, enabling them to lead a normal life. This proposed system consists of an Android mobile using ESP32 with Blynk app, IR remote & Manual control relays. We are using Wi-Fi technology to monitor the devices because of its accuracy, high range, and instant connectivity. This module controls home appliances with ease of installation and is user-friendly.

Keywords

ESP32 with IR remote & manual control relays

1. INTRODUCTION

Home automation has become more beneficial because of its safety and security. Nowadays, home automation has become more advanced and precise in monitoring all home appliances. A home automation system becomes energy-efficient and highly approachable as a smart home technique. It involves basic features to maintain user satisfaction and comfort.

Home automation is a unique system that can control and communicate between nearly all aspects of your house. Home automation is a term used to describe the working together of all household amenities and appliances. For example, a centrally microcontroller panel can have the capability to control everything from heating and overall electrical appliances. Home automation can include controlling aspects of our home remotely through a computer or any mobile equipment, programming electronic devices for specific conditions or scenarios, or centralizing the control of a variety of appliances into a single control center. It is essential that different controllable appliances be interconnected and communicate with each other. The main purpose of home automation is to control or monitor signals from different appliances or basic services. A smartphone can be used to control or monitor the home automation system.

PCB for the ESP32 Projects

To give the project a professional look and make the circuit compact, a PCB for this ESP32 IoT-based home automation project has been designed. Required components for the Smart relay module PCB include:

• Relays 5v (SPDT) (8 no)
• BC547 Transistors (8 no)
• PC817 Optocouplers (8 no)
• 510-ohm 0.25-watt Resistor (8 no)
• 1k 0.25-watt Resistors (10 no)
• LED 5-mm (10 no)
• 1N 4007 Diodes (8 no)
• Push Button (8 no)
• Terminal connectors
• 5v DC Supply

IMPLEMENTATION

Program ESP32 with Arduino IDE

To set up the ESP32 for the home automation project using the Blynk app, follow these steps:

1. Update the Preferences -> Boards Manager URLs with:
   • https://dl.espressif.com/dl/package_esp32_index.json
   • http://arduino.esp8266.com/stable/package_esp8266com_index.json
2. Then install the ESP32 board.

#include <IRremote.h>

int IR_RECV_PIN = 35;
IRrecv irrecv(IR_RECV_PIN);
decode_results results;

void setup() {
  Serial.begin(9600);
  irrecv.enableIRIn(); // Start the receiver
}

void loop() {
  if (irrecv.decode(&results)) {
    Serial.println(results.value, HEX); // print the HEX code
    irrecv.resume();
  }
}

// Enter Auth Token.
#define AUTH "AUTH TOKEN"
// Enter Wifi Name
#define WIFI_SSID "WIFI NAME"
// Enter wifi Password
#define WIFI_PASS "WIFI PASSWORD"

case 0x80BF49B6: relayOnOff(1); break;
case 0x80BFC936: relayOnOff(2); break;
case 0x80BF33CC: relayOnOff(3); break;
case 0x80BF718E: relayOnOff(4); break;
case 0x80BFF10E: relayOnOff(5); break;
case 0x80BF13EC: relayOnOff(6); break;
case 0x80BF51AE: relayOnOff(7); break;
case 0x80BFD12E: relayOnOff(8); break;
case 0x80BF3BC4: all_SwitchOff(); break;

Connect Home Appliances with Relay Module

Connect the home appliances with the relay module as per the circuit diagram. Take proper safety precautions while working with high voltage. Now, turn on the 5V DC supply and 110V/220V AC supply.

Control Methods

CONCLUSION

In this paper, an internet-based smart home system that can be controlled upon user authentication is proposed and implemented. The home automation using IoT has experimentally proven to work by connecting effortless appliances to it. The designed system instigates a process according to the user's requirements. The Android-based smart home app communicates with ESP32 via Blynk app, IR remote, and manual control relays.

REFERENCES

1. S. Kumar, "Ubiquitous Smart home System Using Android Application," International Journal of Computer Networks & Communications, vol. 6, pp. 33-43, January 2014.
2. R. Piyare, “Ubiquitous Home Control and Monitoring System using Android based smart phone," International Journal of Internet of Things, volume. 2, pp. 5-11, 2013.
3. A. Rajabzadeh, A. R. Management, and Z. F. Jahromi, "A Mobile Application for Smart House Remote Control System," World Academy of Science, Engineering and Technology, vol. 62, 2010.
4. N-S. Liang, L-C. Fu, and C.- L. Wu, "An integrated, flexible, and Internet-based control architecture for home automation system in the Internet era," in IEEE International Conference on Robotics and Automation, Washington, DC 2002, pp. 1101 – 1106.
5. Mamata Khatu, Neetu Kaimal, Pratik Jadhav, Syedali Adnan Rizvi, "Implementation of Internet of Things for Home Automation", International Journal of Technology, Volume 3, Issue 2, February 2015.