L298N with Arduino Mega 2560 R3

Wiring for the L298N dual motor driver on the Arduino Mega 2560 R3 (ATmega2560, 5 V logic), chosen with the same pin rules BoardPilot uses: default buses first, and no pins that are used for flash, USB, the debugger or booting.

Wiring

L298N pin	Role	Arduino Mega 2560 R3 pin	Notes
ENA	Input to the part	22 (PA0)	Motor A speed (PWM). Remove the jumper to use it
IN1	Input to the part	23 (PA1)	Motor A direction
IN2	Input to the part	24 (PA2)	Motor A direction
IN3	Input to the part	25 (PA3)	Motor B direction
IN4	Input to the part	26 (PA4)	Motor B direction
ENB	Input to the part	27 (PA5)	Motor B speed (PWM). Remove the jumper to use it
12V	Not wired to the board	not connected	Motor supply 5 to 35 V from a separate supply
GND	Ground	GND
5V	Not wired to the board	not connected	5 V output of the on-board regulator (jumper on, supply up to 12 V)
OUT1	Not wired to the board	not connected	Motor A
OUT2	Not wired to the board	not connected	Motor A
OUT3	Not wired to the board	not connected	Motor B
OUT4	Not wired to the board	not connected	Motor B

Check before you power it on

Motors, servos, relays and LED strips can draw more current than the Arduino Mega 2560 R3’s pins or USB can give. Power them separately and connect the grounds together.

Test code (Arduino)

// Motor A: ENA = speed (PWM), IN1/IN2 = direction. Remove the ENA jumper on the module.
void setup() {
  pinMode(23, OUTPUT);
  pinMode(24, OUTPUT);
  pinMode(22, OUTPUT);
}

void loop() {
  digitalWrite(23, HIGH);
  digitalWrite(24, LOW);
  analogWrite(22, 180);  // about 70% speed
  delay(2000);
  analogWrite(22, 0);    // stop
  delay(1000);
}

Arduino board: arduino:avr:mega.

Questions

Which Arduino Mega 2560 R3 pins do I use for the L298N?

ENA → 22 (PA0), IN1 → 23 (PA1), IN2 → 24 (PA2), IN3 → 25 (PA3), IN4 → 26 (PA4), ENB → 27 (PA5), GND → GND.

Does the L298N work with the Arduino Mega 2560 R3 at 5 V?

Yes: the L298N runs at 5 V and the Arduino Mega 2560 R3 uses 5 V signals, so no level shifting is needed.

BoardPilot checks this wiring in 3D as you build it, and finds crossed or missing wires on the real board.

Download BoardPilot

Full Arduino Mega 2560 R3 pinout · L298N dual motor driver: all pins and data

The L298N on other boards

ESP32 DevKit Arduino Nano Arduino Uno R3 WeAct Black Pill STM32F411CE ESP32-C3-DevKitM-1 ESP32-S3-DevKitC-1 Nordic nRF52840 DK NUCLEO-F401RE Raspberry Pi Pico 2 Raspberry Pi Pico W Raspberry Pi Pico Teensy 4.1

Other parts on the Arduino Mega 2560 R3

BME280 BMP280 DHT22 DHT11 HC-SR04 SSD1306 OLED MPU6050 DS18B20 WS2812B LED strip SG90 servo Relay module HC-SR501 PIR LCD 1602 I2C INA219 VL53L0X BH1750 MAX30102 RC522 RFID NEO-6M GPS Capacitive soil moisture sensor ADS1115 TM1637 28BYJ-48 stepper Potentiometer Push button LED Joystick module SD card module AHT20