Robotics IOT Project Internship
Overview
This project involves creating a remotely controlled car using an ESP32 microcontroller, an L293D motor driver, and MQTT (Message Queuing Telemetry Transport) protocol for communication. The aim is to build a car that can be controlled wirelessly via a mobile app or a computer, sending commands over Wi-Fi using MQTT.
Components
ESP32: A versatile microcontroller with built-in Wi-Fi and Bluetooth, used as the brain of the project.
L293D Motor Driver: A dual H-bridge motor driver integrated circuit, which allows the ESP32 to control the speed and direction of the DC motors.
DC Motors: These are the motors that will drive the car’s wheels.
Power Supply: A battery pack to power the motors and the ESP32.
Chassis: The base structure of the car where all components will be mounted.
Wheels: Attached to the DC motors to enable movement.
Features
Wireless Control: The car can be controlled remotely via MQTT commands sent from a mobile app or computer.
Directional Control: The car can move forward, backward, left, and right.
Speed Control: Ability to adjust the speed of the car by varying the PWM signals to the motors.
Real-time Feedback: Potential to add sensors for real-time feedback and obstacle avoidance.
Implementation Steps
Hardware Setup:
Mount the DC motors onto the car chassis.
Connect the DC motors to the L293D motor driver.
Connect the L293D motor driver to the ESP32.
Ensure proper power connections for the ESP32 and the motor driver.
Software Setup:
Install the Arduino IDE and necessary libraries for ESP32 and MQTT.
Write code to initialize the ESP32 and connect it to a Wi-Fi network.
Implement MQTT communication to subscribe to control topics and publish status updates.
Write functions to control the motor driver based on received MQTT messages.
MQTT Broker Setup:
Set up an MQTT broker (e.g., Mosquitto) on a local server or use a cloud-based service.
Configure topics for sending commands and receiving status updates.
Control Interface:
Develop a mobile app or web interface to send MQTT commands to the car.
Implement controls for movement direction and speed adjustment.
Testing and Calibration:
Test the car for responsiveness to MQTT commands.
Calibrate the motor speeds and directional control for smooth operation.
Contact US for more detail: +91-8982754201