Course Content
Module 1 — Introduction to Robotics
Students understand what robotics is and what they will learn.
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Lesson 1.1 – Welcome to the Course
Lesson 1.2 – What You Will Build in This Course
Lesson 1.3 – What is Robotics
Lesson 1.4 – Types of Robots
Lesson 1.5 – Applications of Robotics
Lesson 1.6 – Course Roadmap
Lesson 1.7 – Robotics Safety Guidelines
Module 2 — ESP32 and Programming Basics
Students learn how to program ESP32.
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Lesson 2.1 — What is a Microcontroller
Lesson 2.2 — Introduction to ESP32
Lesson 2.3 — ESP32 Board Overview
Lesson 2.4 — ESP32 Pin Diagram Explanation
Lesson 2.5 — Installing Arduino IDE
Lesson 2.6 — Installing ESP32 Board in Arduino IDE
Lesson 2.7 — Uploading First Program (LED Blink)
Module 3 — Robotics Components Explained
Students understand all components used in the robotics kit.
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Lesson 3.1 — Understanding Sensors
Lesson 3.2 — Understanding Actuators
Lesson 3.3 — DC Motor Explained
Lesson 3.4 — Servo Motor Explained
Lesson 3.5 — L298N Motor Driver
Lesson 3.6 — Ultrasonic Sensor (HC-SR04)
Lesson 3.7 — IR Sensor Module
Lesson 3.8 — LDR Sensor Module
Lesson 3.9 — Flame Sensor Module
Lesson 3.10 — Limit Switch
Lesson 3.11 — Robot Chassis and Motors
Lesson 3.12 — Power System and Batteries
Lesson 3.13 — Wiring and Breadboard Basics
Module — Programming Fundamentals for Robotics
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Lesson P1 — Introduction to Programming
Lesson P2 — How Microcontrollers Run Programs
Lesson P3 — Understanding the Arduino Programming Structure
Lesson P4 — Setup() and Loop() Explained
Lesson P5 — Variables and Data Types
Lesson P6 — Digital Input and Output
Lesson P7 — Analog Input and Output
Lesson P8 — Conditional Statements (if / else)
Lesson P9 — Logical Operators
Lesson P10 — Loops (for / while)
Lesson P11 — Functions in Arduino Programming
Lesson P12 — Serial Communication (Serial Monitor)
Lesson P13 — Reading Sensor Data
Lesson P14 — Controlling Motors with Code
Lesson P15 — Writing Clean and Reusable Code
Lesson P16 — Debugging and Troubleshooting Programs
Lesson P17 — PWM for Motor Speed Control
Lesson P18 — Working with Libraries
Lesson P19 — Understanding Pin Modes
Lesson P20 — Code Optimization for Robotics
Module 4 — Project 1: Smart Dustbin
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Lesson 4.0 — Project Introduction
Lesson 4.1 — Components Used
Lesson 4.2 — Circuit Connections
Lesson 4.3 — Programming Code
Lesson 4.4 — Testing and Feature Options
Module 5 — Project 2: Light Sensitive Robot
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Lesson 5.0 — Project Introduction
Lesson 5.1 — Components Used
Lesson 5.2 — Circuit Connections
Lesson 5.3 — Programming Code
Lesson 5.4 — Testing and Feature Options
Module 6 — Project 3: Bumper Control Robot
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Lesson 6.0 — Project Introduction
Lesson 6.1 — Components Used
Lesson 6.2 — Circuit Connections
Lesson 6.3 — Programming Code
Lesson 6.4 — Testing and Feature Options
Module 7 — Project 4: Obstacle Avoiding Robot (Single Ultrasonic Sensor)
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Lesson 7.0 — Project Introduction
Lesson 7.1 — Components Used
Lesson 7.2 — Circuit Connections
Lesson 7.3 — Programming Code
Lesson 7.4 — Testing and Feature Options
Module 8 — Project 5: Bluetooth Control Car
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Lesson 8.0 — Project Introduction
Lesson 8.1 — Components Used
Lesson 8.2 — Circuit Connections
Lesson 8.3 — Programming Code
Lesson 8.4 — Testing and Feature Options
Module 9 — Project 6: Voice Control Robot
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Lesson 9.0 — Project Introduction
Lesson 9.1 — Components Used
Lesson 9.2 — Circuit Connections
Lesson 9.3 — Programming Code
Lesson 9.4 — Testing and Feature Options
Module 10 — Project 7: Line Follower Robot (Single IR Sensor)
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Lesson 10.0 — Project Introduction
Lesson 10.1 — Components Used
Lesson 10.2 — Circuit Connections
Lesson 10.3 — Programming Code
Lesson 10.4 — Testing and Feature Options
Module 11 — Project 8: Line Follower Robot (Double IR Sensor)
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Lesson 11.0 — Project Introduction
Lesson 11.1 — Components Used
Lesson 11.2 — Circuit Connections
Lesson 11.3 — Programming Code
Lesson 11.4 — Testing and Feature Options
Module 12 — Project 9: Fire Fighting Robot
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Lesson 12.0 — Project Introduction
Lesson 12.1 — Components Used
Lesson 12.2 — Circuit Connections
Lesson 12.3 — Programming Code
Lesson 12.4 — Testing and Feature Options
Module 13 — Project 10: Obstacle Avoiding Robot (3 Ultrasonic Sensors)
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Lesson 13.0 — Project Introduction
Lesson 13.1 — Components Used
Lesson 13.2 — Circuit Connections
Lesson 13.3 — Programming Code
Lesson 13.4 — Testing and Feature Options
Final Module 14 — Course Completion
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Lesson 14.1 — Robot Improvements
Lesson 14.2 — Building Your Own Robot Ideas
Lesson 14.3 — Next Steps in Robotics
Lesson 14.4 — Course Completion
Hands-On ESP32 Robotics: Build Smart Robots Step by Step

🤖Project 5: Bluetooth Control Car  Project Introduction

🎯 Lesson Objective

In this lesson, students will understand:

• What a Bluetooth Controlled Robot is
• How robots can be controlled using a smartphone
• The working principle of Bluetooth communication
• How ESP32 communicates with mobile devices
• Real-world applications of wireless robot control

This lesson introduces the Bluetooth Control Car project, where the robot can be controlled using a mobile phone through Bluetooth.

1️⃣ What is a Bluetooth Control Robot?

A Bluetooth Control Robot is a robot that can be controlled wirelessly using a smartphone or another Bluetooth device.

Instead of running automatically, this robot moves based on commands sent from a mobile phone.

Using a mobile app, the user can control the robot to:

➡ Move forward
⬅ Move backward
↩ Turn left
↪ Turn right
🛑 Stop

This creates a manual remote-controlled robot system.

2️⃣ How Bluetooth Control Works

Bluetooth is a short-range wireless communication technology used to exchange data between devices.

In this project:

1️⃣ The smartphone sends commands through Bluetooth.
2️⃣ The ESP32 receives the Bluetooth data.
3️⃣ The ESP32 processes the received command.
4️⃣ The program controls the motors using the motor driver.

This allows the robot to move based on user input.

3️⃣ Why ESP32 is Perfect for Bluetooth Robots

The ESP32 has built-in Bluetooth capability.

This means:

• No external Bluetooth module is required
• Faster communication
• Easy smartphone connection

The ESP32 can receive commands such as:

• F → Forward
• B → Backward
• L → Left
• R → Right
• S → Stop

These commands are sent from the smartphone app and processed by the robot.

4️⃣ Mobile App for Controlling the Robot

A Bluetooth robot requires a mobile app to send commands.

Students can use common apps such as:

📱 Bluetooth RC Controller
📱 Arduino Bluetooth Controller
📱 Bluetooth Terminal

These apps allow users to send characters or button commands to the ESP32.

The robot reads these commands and moves accordingly.

5️⃣ Components Used in This Project

The Bluetooth Control Car uses the following components:

🧠 ESP32 microcontroller
📡 Built-in Bluetooth module
⚙ L298N motor driver
🚗 DC motors
🔌 Jumper wires
🔋 Battery pack
🧩 Robot chassis

These components work together to create a wireless remote-controlled robot system.

6️⃣ Skills Learned in This Project

By completing this project, students will learn how to:

📡 Use Bluetooth communication with ESP32
📱 Control robots using a smartphone
⚙ Control motors using commands
🧠 Process wireless data in microcontrollers
🤖 Build a wireless robotics system

These skills are important for building remote-controlled robots and IoT devices.

7️⃣ Real-World Applications

Bluetooth-controlled robots and devices are used in many areas.

Examples include:

🚗 Remote-controlled vehicles
🤖 Tele-operated robots
🏭 Industrial robot controllers
🏠 Smart home devices

Wireless communication allows machines to be controlled without physical connections.

🚀 What Happens Next

Now that you understand the concept of the Bluetooth Control Robot, the next step is to explore the components required to build the system.

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