Bluetooth Control Home Automation Using Esp 32 (BLE)

Hello, Friends Welcome to my Channel "Electrify Circuit". This video is Bluetooth Control Home Automation Using Esp 32 (BLE). Control Home Appliances Using Andriod Phone App it's very used for a handicapped person.

For the last few years, the wireless world has been bombarded daily with information about a new generation of radio frequency(RF) technologies that would profoundly impact. if not revolutionize.the way we bye and contact our businesses.

‘The wireless-networking standard technology called Bluetooth has quietly become a common way to replace the wires on short distances. With a gadget such as a smartphone (Android Phone) or a tablet featured with a Bluetooth module, a wireless connection is the easiest way to send and receive information, And because this technology spread in the prototyping circuit, it’s often used to control things wirelessly.

This project work explains how to control electrical appliances using an Android device. Operating conventional wall switches is difficult for physically handicapped or elder people. This project provides the solution to this problem by integrating all the electrical appliances into a control unit that can be operated by an Android application device (Android smartphone or Tablet). The proposed system controls the electrical loads based on the data transmitted by the Android device. An android application should be installed in the user's mobile or tablet to control the electrical loads, Using this android application user can send the commands to the Bluetooth module to control the electrical loads. The wireless technology used in this project is Bluetooth It can also be called an “Android-based Home AutomationSystem” or “Remote Password Operated Electronic Home Appliances Control System”.

Project Perspective

Bluetooth Control Home Automation Using Esp 32 is a fun and basic Bluetooth-based home automation layout for anyone to understand about basic physical and digital interaction. By utilizing a smartphone and its Bluetooth feedback, you'll learn about basic home automation and remote control.

Technical Implementation

The system uses an ESP32 Development Board to receive commands from your smartphone over Bluetooth. Based on the received commands, the ESP32 triggers one or more Relay Modules to turn on or off various home appliances.

Hardware Infrastructure

• ESP32 Development Board: This powerful dual-core microcontroller has built-in Bluetooth and WiFi connectivity.
• Relay Module: Effectively isolates and controls high-voltage/current home appliances with a low-voltage signal.
• Micro-USB Cable: Connects the ESP32 to your computer for power and code.
• Jumper Wires: Connect all the components together.

Mager Components

Esp 32 (BLE):- ESP32 has a lot more features than ESP8266 and it is difficult to include all the specifications in this Getting Started with ESP32 guide. So, I made a list of some of the important specifications of ESP32 here. But for a complete set of specifications, I strongly suggest you refer to the Datasheet.

Specifications:-

• Single or Dual-Core 32-bit LX6 Microprocessor with clock frequency up to 240 MHz.
• 520 KB of SRAM, 448 KB of ROM, and 16 KB of RTC SRAM.
• Supports 802.11 b/g/n Wi-Fi connectivity with speeds up to 150 Mbps.
• Support for both Classic Bluetooth v4.2 and BLE specifications.
• 34 Programmable GPIOs.
• Up to 18 channels of 12-bit SAR ADC and 2 channels of 8-bit DAC
• Serial Connectivity include 4 x SPI, 2 x I2C, 2 x I2S, 3 x UART.
• Ethernet MAC for physical LAN Communication (requires external PHY).
• 1 Host controller for SD/SDIO/MMC and 1 Slave controller for SDIO/SPI.
• Motor PWM and up to 16-channels of LED PWM.
• Secure Boot and Flash Encryption.

Relay:- Relays are the most commonly used switching device in electronics. Let us learn how to use one in our circuits based on the requirement of our project.

Features of 5-Pin 5Volt Relay

• Trigger Voltage (Voltage across coil) : 5V DC
• Trigger Current (Nominal current) : 70mA
• Maximum AC load current: 10A @ 250/125V AC
• Maximum DC load current: 10A @ 30/28V DC
• Compact 5-pin configuration with plastic moulding
• Operating time: 10msec Release time: 5msec
• Maximum switching: 300 operating/minute (mechanically)

Relay Pin ConfigurationCoil 1:- Used to trigger(On/Off) the Relay, Normally one end is connected to 5V and the other end to the ground.

Coil 2:- Used to trigger(On/Off) the Relay, Normally one end is connected to 5V and the other end to the ground.

Common (COM):- Common is connected to one End of the Load that is to be controlled.

Normally Closed (NC):- The other end of the load is either connected to NO or NC. If connected to NC the load remains connected before the trigger.

Normally Open (NO):- The other end of the load is either connected to NO or NC. If connected to NO the load remains disconnected before the trigger.

Communication and Logic

The ESP32 code uses the BluetoothSerial library.

1. Initialize: The ESP32 initializes Bluetooth and sets its name (e.g., "ESP32_Automation").
2. Polling: The ESP32 constantly checks the Bluetooth serial port for any incoming commands from the smartphone.
3. Command Processing: When a command is received, the code triggers the corresponding relay to turn the connected appliance on or off.

Software Execution

The code is designed to respond immediately to commands, providing a highly responsive control system for your home appliances.

Required Components:-

• Esp 32 (BLE)
• Breadboard
• 5v Relay Module
• Jumper wire
• Bulb Holder
• 1.00 sqmm Wire

Tutorial Video:

Circuit Diagram Relay Module:

Future Expansion

• MQTT Integration: Connect to an MQTT broker for even more advanced home automation over WiFi.
• Cloud Integration: Integrate with a cloud service to control the appliances remotely from anywhere in the world.
• Vibration/Motion Detection: Add sensors to trigger the appliances based on vibration or motion.
• Voice Control Integration: Use a voice assistant like Alexa or Google Assistant to control various appliances through the ESP32.

Bluetooth Control Home Automation Using Esp 32 is a perfect project for any electronics enthusiast looking for a more interactive and engaging home automation tool!