SmartHome Relay 🌡️🔔

This project is a smart boiler control and monitoring system built on the Blynk platform. Using an ESP32, this system allows users to:

• Remotely control a relay to activate or deactivate the built-in heating resistance of the boiler.
• Monitor the temperature inside the boiler in real-time.
• Automate boiler heating using thermostat-like behavior based on a set temperature range.
• Enable or disable notifications for temperature changes or system events.

The project combines hardware design, embedded programming, and IoT integration for a seamless smart home experience.

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📜 Table of Contents

• ✨ Features
• 🚀 Getting Started
  • Hardware
  • Software
• ⚙️ Hardware Design
  • Circuit Diagram
  • PCB 3D View
• 📲 Blynk App Interface
• 🛠️ Code Overview
  • Dependencies
  • Uploading the Code
• PCB Design

Features ✨

• Remote Control: Control the heating resistance via the Blynk mobile app.
• Real-time Temperature Monitoring: Display temperature data from the boiler directly in the app.
• Automated Thermostat Mode: Set a target temperature range, and the system will automatically control the relay.
• Notification Toggle: Enable or disable notifications for system status and alerts.
• Custom PCB Design: Compact and efficient PCB for the ESP32 and relay circuit, designed in KiCAD.
• User-friendly Interface: Intuitive and easy-to-use Blynk app interface for controlling and monitoring.

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Getting Started

Hardware

• Microcontroller: ESP32
• Temperature Sensor: DS18B20
• Relay Module: Controls the heating resistance
• Custom PCB: Designed to integrate the ESP32, relay, and sensor connections

Software

• Arduino IDE: Development environment for the ESP32 firmware
• Blynk: Cloud-based platform for IoT app creation
• KiCAD: Used for designing the PCB

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Hardware Design📐

Circuit Diagram

PCB 3D View

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Blynk App Interface 📱

The Blynk app provides an intuitive interface for interacting with the SmartHome Relay system:

Features:

• Relay Control: Toggle the relay to activate or deactivate the heating resistance.
• Temperature Display: Real-time temperature monitoring from the boiler.
• Automation Mode: Set a target temperature range for thermostat-like operation.
• Notifications Toggle: Enable or disable notifications for system status and alerts.

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Code Overview

Dependencies

Ensure the following libraries are installed in Arduino IDE:

1. Blynk
2. ESP32 Board Support
3. Temperature Sensor Library

Uploading the Code

1. Clone the repository.
2. Open the .ino file in Arduino IDE.
3. Configure your WiFi and Blynk credentials in the code.
4. Upload the code to the ESP32 using a USB connection.

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PCB Design

• The PCB design was created using KiCAD.
• It includes the ESP32, relay, and connectors for the temperature sensor.
• You can [link PCB ordering instructions here] if relevant.