WIFI controlled CAR

DC motors & Wheels

ESP8266 WiFi Robot Car

NodeMCU ESP8266

Car chassis

Arduino Uno Rev3

L298n Motor Driver

<html><body> ESP8266 and Arduino Controlled Car 🚗📡 A smart RC car project using Arduino Uno and ESP8266 Wi-Fi module, built to demonstrate IoT-based vehicle control. This project combines embedded hardware with wireless communication, creating a fun and practical application for learning electronics, automation, and networking. ✨ Features - Remote-controlled car via Wi-Fi (ESP8266) - Dual motor driver (L298N) for forward, backward, left, and right movement - Real-time control using a simple web-based interface - Modular design (can be expanded with sensors like ultrasonic for obstacle avoidance) 🛠️ Hardware Components - Arduino Uno - ESP8266 Wi-Fi Module (NodeMCU can also be used) - L298N Motor Driver - DC Motors (x4 with chassis + wheels) - Power Source (12V Li-ion battery) - Jumper wires, breadboard, connectors - Optional: Ultrasonic sensor for collision detection 📂 Software &amp; Code - Arduino IDE - ESP8266WiFi library - Fully documented source code available on GitHub: [ <a href="https://github.com/DevYadav3672/ESP8266-CAR/tree/main">ESP8266 car repo on my github profile </a>] 🔌 Wiring Overview - ESP8266 → Arduino (via serial pins) - Arduino → L298N Motor Driver → Motors - Power via external battery to motor driver + Arduino Vin - Enable pins connected to PWM for speed control (Detailed wiring diagram included in images section) <figure><img src="https://github.com/DevYadav3672/ESP8266-CAR/blob/main/ESPCARDIAGRAM.jpg"/><figcaption>Circuit Diagram</figcaption></figure> 🚀 How to Run 1. Upload Arduino sketch to Uno <pre>#define ENAA 3 </pre><pre>#define IN1A 2 </pre><pre>#define IN2A 4 </pre><pre>#define ENBA 6 </pre><pre>#define IN3A 5 </pre><pre>#define IN4A 7 </pre><pre>#define ENAB 9 </pre><pre>#define IN1B 8 </pre><pre>#define IN2B 10 </pre><pre>#define IN3B 13 </pre><pre>#define IN4B 12 </pre><pre>#define ENBB 11 </pre><pre>void setup() { </pre><pre>	 Serial.begin(9600); </pre><pre>	 // BT.begin(9600); </pre><pre>	 pinMode(IN1A, OUTPUT); </pre><pre>	 pinMode(IN2A, OUTPUT); </pre><pre>	 pinMode(IN3A, OUTPUT); </pre><pre>	 pinMode(IN4A, OUTPUT); </pre><pre>	 pinMode(ENAA, OUTPUT); </pre><pre>	 pinMode(ENBA, OUTPUT); </pre><pre>	 pinMode(IN1B, OUTPUT); </pre><pre>	 pinMode(IN2B, OUTPUT); </pre><pre>	 pinMode(IN3B, OUTPUT); </pre><pre>	 pinMode(IN4B, OUTPUT); </pre><pre>	 pinMode(ENAB, OUTPUT); </pre><pre>	 pinMode(ENBB, OUTPUT); </pre><pre>	 Serial.println("Pin modes are set!"); </pre><pre>} </pre><pre>void loop() { </pre><pre>	 char command; </pre><pre>	 if (Serial.available()) { </pre><pre>	 command = Serial.read(); </pre><pre>	 Serial.println(command); </pre><pre>	 if (command == 'F') { </pre><pre>	 digitalWrite(IN1A, HIGH); digitalWrite(IN2A, LOW); </pre><pre>	 digitalWrite(IN3A, HIGH); digitalWrite(IN4A, LOW); </pre><pre>	 analogWrite(ENAA, 255); analogWrite(ENBA, 255); </pre><pre>	 Serial.println("Forward"); </pre><pre>	 </pre><pre>	 digitalWrite(IN1B, HIGH); digitalWrite(IN2B, LOW); </pre><pre>	 digitalWrite(IN3B, HIGH); digitalWrite(IN4B, LOW); </pre><pre>	 analogWrite(ENAB, 255); analogWrite(ENBB, 255); </pre><pre>	 // Serial.println("Forward"); </pre><pre>	 </pre><pre>	 } </pre><pre>	 else if (command == 'B') { </pre><pre>	 digitalWrite(IN1A, LOW); digitalWrite(IN2A, HIGH); </pre><pre>	 digitalWrite(IN3A, LOW); digitalWrite(IN4A, HIGH); </pre><pre>	 analogWrite(ENAA, 255); analogWrite(ENBA, 255); </pre><pre>	 Serial.println("Backward"); </pre><pre>	 digitalWrite(IN1B, LOW); digitalWrite(IN2B, HIGH); </pre><pre>	 digitalWrite(IN3B, LOW); digitalWrite(IN4B, HIGH); </pre><pre>	 analogWrite(ENAB, 255); analogWrite(ENBB, 255); </pre><pre>	 // Serial.println("Backward"); </pre><pre>	 } </pre><pre>	 else if (command == 'R') { </pre><pre>	 digitalWrite(IN1A, HIGH); digitalWrite(IN2A, LOW); </pre><pre>	 digitalWrite(IN3A, LOW); digitalWrite(IN4A, HIGH); </pre><pre>	 analogWrite(ENAA, 255); analogWrite(ENBA, 255); </pre><pre>	 Serial.println("Right"); </pre><pre>	 digitalWrite(IN1B, HIGH); digitalWrite(IN2B, LOW); </pre><pre>	 digitalWrite(IN3B, LOW); digitalWrite(IN4B, HIGH); </pre><pre>	 analogWrite(ENAB, 255); analogWrite(ENBB, 255); </pre><pre>	 // Serial.println("Backward"); </pre><pre>	 } </pre><pre>	 else if (command == 'L') { </pre><pre>	 digitalWrite(IN1A, LOW); digitalWrite(IN2A, HIGH); </pre><pre>	 digitalWrite(IN3A, HIGH); digitalWrite(IN4A, LOW); </pre><pre>	 analogWrite(ENAA, 255); analogWrite(ENBA, 255); </pre><pre>	 Serial.println("Left"); </pre><pre>	 digitalWrite(IN1B, LOW); digitalWrite(IN2B, HIGH); </pre><pre>	 digitalWrite(IN3B, HIGH); digitalWrite(IN4B, LOW); </pre><pre>	 analogWrite(ENAB, 255); analogWrite(ENBB, 255); </pre><pre>	 // Serial.println("Backward"); </pre><pre>	 } </pre><pre>	 else if (command == 'S') { </pre><pre>	 digitalWrite(IN1A, LOW); digitalWrite(IN2A, LOW); </pre><pre>	 digitalWrite(IN3A, LOW); digitalWrite(IN4A, LOW); </pre><pre>	 analogWrite(ENAA, 0); analogWrite(ENBA, 0); </pre><pre>	 Serial.println("Stop"); </pre><pre>	 digitalWrite(IN1B, LOW); digitalWrite(IN2B, LOW); </pre><pre>	 digitalWrite(IN3B, LOW); digitalWrite(IN4B, LOW); </pre><pre>	 analogWrite(ENAB, 0); analogWrite(ENBB, 0); </pre><pre>	 // Serial.println("Backward"); </pre><pre>	 } </pre><pre>	 } </pre><pre>} </pre>2. Upload code on ESP8266 <pre>#include&lt;ESP8266WiFi.h&gt; </pre><pre>#define ssid "ESP8266 CAR" </pre><pre>#define password "Ydp6361#" </pre><pre>WiFiServer server(80); </pre><pre>void setup(){ </pre><pre>	 Serial.begin(9600); </pre><pre>	 WiFi.softAP(ssid,password); </pre><pre>	 server.begin(); </pre><pre>	 Serial.println("wifi is created!"); </pre><pre>	 Serial.print("IP : "); </pre><pre>	 Serial.println(WiFi.softAPIP()); </pre><pre>} </pre><pre>void loop(){ </pre><pre>	 WiFiClient client = server.available(); </pre><pre>	 if (client){ </pre><pre>	 Serial.println("Client is connected!"); </pre><pre>	 String command = client.readStringUntil('\r'); </pre><pre>	 client.flush(); </pre><pre>	 int index = command.indexOf("?State="); </pre><pre>	 if (index != -1) { </pre><pre>	 char c = command.charAt(index + 7); </pre><pre>	 Serial.print("pure data : "); </pre><pre>	 Serial.println(c); </pre><pre>	 } </pre><pre>	 client.stop(); </pre><pre>	 } </pre><pre>} </pre>3. Connect to Wi-Fi hotspot 4. Open the web app/control interface 5. Drive your IoT-powered car! 🎯 Learning Outcomes - Basics of Arduino + ESP8266 integration - Motor control using L298N driver - Web-controlled robotics - Hands-on IoT + embedded systems project 👤 Author Dev Yadav-Pursing B.Tech in Electronics &amp; Communication Engineering - LinkedIn: [<a href="https://www.linkedin.com/in/deev-yadav-826859372?utm_source=share_via&amp;utm_content=profile&amp;utm_medium=member_android">Deev Yadav</a>] - GitHub: [<a href="https://github.com/DevYadav3672">DevYadav3672</a>] </body></html>

WIFI controlled CAR

Build an all wheel car which is controlled by ESP8266 and Arduino Uno.