Motor Driver Control

Z2M Part: EMA-00010-B

Control DC motors using L293D or L298N motor driver.

Circuit Diagram

Wire Connections & Pin Configuration

Wire Color Connections:

Yellow/Orange → Pins 4–7 to L298N IN1–IN4
Red → 5V to L298N logic, 6–12V to motor supply
Black → GND to L298N GND

Pin Configuration:

Arduino Digital Pin 4 → L298N IN1 (Motor A Forward)
Arduino Digital Pin 5 → L298N IN2 (Motor A Backward)
Arduino Digital Pin 6 → L298N IN3 (Motor B Forward)
Arduino Digital Pin 7 → L298N IN4 (Motor B Backward)
Arduino 5V → L298N 5V/Logic supply
Arduino GND → L298N GND
External 6-12V → L298N 12V (motor power)
Motor A → L298N OUT1, OUT2
Motor B → L298N OUT3, OUT4

Arduino Code

Edit

// Define Motor Driver pins
const int A_1A = 4; // Left Motor Forward
const int A_1B = 5; // Left Motor Backward
const int B_1A = 6; // Right Motor Forward
const int B_1B = 7; // Right Motor Backward

void setup() {
  // Set all motor control pins as output
  pinMode(A_1A, OUTPUT);
  pinMode(A_1B, OUTPUT);
  pinMode(B_1A, OUTPUT);
  pinMode(B_1B, OUTPUT);
}

void loop() {
  // Move Forward
  digitalWrite(A_1A, HIGH);
  digitalWrite(A_1B, LOW);
  digitalWrite(B_1A, HIGH);
  digitalWrite(B_1B, LOW);
  delay(1000);

  // Move Backward
  digitalWrite(A_1A, LOW);
  digitalWrite(A_1B, HIGH);
  digitalWrite(B_1A, LOW);
  digitalWrite(B_1B, HIGH);
  delay(1000);
}

Instruction Details

Wiring: Connect L298N IN1 to Pin 4, IN2 to Pin 5, IN3 to Pin 6, IN4 to Pin 7. Connect 5V to logic, external 6–12V to motor supply. Connect Motor A to OUT1/OUT2, Motor B to OUT3/OUT4. Connect GND to Arduino GND.
Library: Not required (built-in).
Upload Code: Tools → Board → Arduino Uno. Tools → Port → select your COM port. Click Upload button.
View Output: Motors run in sequence (forward/backward). Adjust code for speed and direction.

How to Use

Connect the required components as per the Pin Configuration above
Open Arduino IDE and create a new sketch
Copy and paste the code above
Select your Arduino board and COM port from Tools menu
Click the Upload button to upload the code to your Arduino
Open Serial Monitor (if applicable) to see the output

Components Required

Arduino Uno
L298N or L293D Motor Driver Module
2× DC Motors
External 6–12V Power Supply
Breadboard
Jumper Wires

Category: Motors & Servos