Wi-Fi ROBOT Project

Abstract

The Wi-Fi Robot Project is a microcontroller-based robotic vehicle that can be wirelessly controlled using a smartphone, computer, or web interface over a local Wi-Fi network. The project combines IoT technology, motor drivers, and web server-based control to enable remote navigation and operation. It’s ideal for surveillance, automation, and educational applications.

Objectives

• Design a robot controlled via Wi-Fi using a web browser or mobile app.

• Interface motors and sensors with a Wi-Fi-enabled microcontroller (e.g., NodeMCU or ESP32).

• Enable real-time movement commands like forward, reverse, left, right, and stop.

• Optional: Add a live camera feed or sensor data display.

Components Used

• NodeMCU / ESP8266 / ESP32

• L298N Motor Driver Module

• DC Motors (x2 or x4)

• Chassis Kit

• Wheels, Battery, and Switch

• Power Supply Module / 18650 Cells

• Wi-Fi Network (Mobile Hotspot or Router)

• Optional: Ultrasonic Sensor, Camera Module (ESP32-CAM)

Working Principle

• The robot creates or connects to a Wi-Fi network.

• A web server hosted on the microcontroller serves a control interface (HTML page).

• When buttons are clicked on the interface, commands are sent to the microcontroller.

• The microcontroller translates these commands into motor actions via the motor driver.

• Optionally, real-time feedback (like camera or sensor data) can be streamed.

Methodology

1. Assemble chassis and connect motors to motor driver.

2. Connect motor driver to NodeMCU or ESP32.

3. Write Arduino code to control motor pins based on HTTP requests.

4. Host a simple HTML interface with buttons for direction control.

5. Test robot via browser interface over Wi-Fi.

Applications

• Remote surveillance robots

• Smart home/warehouse automation

• Obstacle-avoiding or line-following base models

• Educational robotics and STEM training

Future Enhancements

• Add voice control via Google Assistant or Alexa.

• Integrate camera module for live video streaming.

• Connect to cloud IoT platforms for remote access.

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