ESP32 Bluetooth Controlled Car

Overview

This project controls a car using an ESP32 DevKit V1 via Bluetooth and an L298N motor driver.

Components

• ESP32 DevKit V1
• L298N Motor Driver
• DC Motors (BO Motors)
• Bluetooth (built-in ESP32)
• Battery (7.4V – 12V depending on motor)

Commands

• F → Forward
• B → Backward
• L → Left
• R → Right
• I → Forward Right
• J → Backward Right
• G → Forward Left
• H → Backward Left

Wiring

ESP32 Pin	L298N Pin	Function
GPIO14	ENA	Enable Motor A (PWM)
GPIO26	IN1	Motor A Direction 1
GPIO25	IN2	Motor A Direction 2
GPIO27	ENB	Enable Motor B (PWM)
GPIO33	IN3	Motor B Direction 1
GPIO32	IN4	Motor B Direction 2
5V	5V (Logic)	L298N logic supply
GND	GND	Common ground
Battery +	12V (Vs)	Motor power supply

• OUT1, OUT2 → Motor A
• OUT3, OUT4 → Motor B

⚠️ Note: Connect ESP32 GND and L298N GND together

Circuit Diagram


Install USB Driver for ESP32

To upload code into ESP32 using Arduino IDE, you need to install the USB-to-UART driver:

• CP210X USB Driver (Windows, Mac, Linux)
• CH340 USB Driver (Windows, Mac, Linux)

Download and install the driver.

In Arduino IDE:

Go to Tools → Board.

Install ESP32 board support (if not already):

File → Preferences → Additional Board Manager URLs Add:https://dl.espressif.com/dl/package_esp32_index.json Then go to Tools → Board → Board Manager → search ESP32 → Install.

Recompile and upload.

How to Use

1. Upload the RC_Code.ino file to ESP32 using Arduino IDE.
2. Pair ESP32 with phone using Bluetooth (Device Name: Idea lab car).
3. Use a Bluetooth terminal app to send the commands (F, B, L, R, etc.).
4. The car moves based on the command received.

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Schematic

Author

Himanshu Gaud

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