This project presents the design and development of an Omni-Wheel Robot using an ESP32 microcontroller for both manual and automatic operation. The robot can be controlled wirelessly through Bluetooth voice commands and the Blynk mobile application, providing easy and flexible navigation. The robot uses three omni wheels for smooth movement in all directions without changing its orientation. A servo-mounted ultrasonic sensor detects obstacles and automatically changes the robot's direction to avoid collisions. Dual L298 motor drivers are used to control the DC motors efficiently. In manual mode, the robot can be controlled using voice commands or the Blynk app. In automatic mode, the ultrasonic sensor continuously detects obstacles; upon encountering an object, the robot intelligently avoids it by changing direction (typically turning left) and continues its movement. An MQ gas sensor continuously monitors the surrounding air for harmful gases. If gas is detected above the preset level, a buzzer is activated to alert nearby users. This combination of wireless control, obstacle avoidance, gas detection, and real-time alerts makes the robot suitable for industrial monitoring, warehouse inspection, and smart surveillance applications.        

Objectives of the project:

1. To develop an omni-wheel robot capable of moving smoothly in all directions.
2. To enable wireless control using Bluetooth voice commands and the Blynk mobile application.
3. To detect and avoid obstacles automatically using an ultrasonic sensor.
4. To detect harmful gas leakage using an MQ gas sensor and provide an immediate warning through a buzzer.
5. To create a smart and efficient robotic system for industrial monitoring, surveillance, and automation.

          The major building blocks of the project are:  

• Battery power supply.
• LM2596.
• ESP32 Microcontroller.
• Omni wheels with two L298 motor drivers.
• Auto/manual mode selection switch.
• Servo motor.
• Ultrasonic sensor.
• GAS sensor.
• Buzzer.

            Software’s used:

• Embedded C programming.
• Arduino IDE programmer for dumping code into Micro controller.
• Express SCH for Circuit design.
• Wi-Fi technology.
• Bluetooth technology.

       

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