Dual Motor Driver Module L298N

The L298N Dual Motor Driver Module (MPN: L298N) is a versatile, high-current motor driver built around the classic L298N Dual H-Bridge IC. It allows a low-power microcontroller — such as an Arduino, ESP32 or Raspberry Pi — to safely drive up to 2 DC motors independently, or 1 bipolar stepper motor, with full control over both speed (via PWM) and direction (via digital logic). Whether you are building a wheeled robot, a conveyor belt or a small CNC machine, the L298N module is one of the most widely used motor driver solutions in the maker community.

Key Features

• Dual H-Bridge Architecture: Controls 2 DC motors or 1 bipolar stepper motor independently — ideal for differential-drive robots without additional hardware.
• Direction & Speed Control (PWM): Direction is set via digital logic pins; speed is tuned by applying a PWM signal to the Enable A/B inputs — giving you smooth, precise motor control from any microcontroller.
• Onboard Aluminium Heatsink: The large integrated heatsink dissipates thermal load efficiently, supporting a maximum power dissipation of up to 20 W (at T = 75 °C) — keeping the driver stable during extended operation.
• Onboard 5 V Logic Regulator: The module includes a built-in voltage regulator that can supply 5 V logic power to your microcontroller when the motor supply is within the supported range — reducing the need for a separate power source.
• Enable Jumpers: Removable jumpers on Enable A and Enable B pins allow you to either keep motors always enabled or connect PWM lines for dynamic speed control — flexible for both simple and advanced wiring setups.

Pinout & Wiring

Wiring note: Connect IN1–IN4 to digital output pins of your microcontroller. Remove the ENA/ENB jumpers and connect those pins to PWM-capable outputs for speed control. Share a common GND between the module and the microcontroller at all times.

Compatibility

• Arduino UNO / Nano / Mega: Fully compatible — the 5 V logic level of Arduino matches the L298N control inputs directly, no level shifting required.
• ESP32 / ESP8266: Compatible with a note — these boards operate at 3.3 V logic. The L298N typically accepts 3.3 V signals on its inputs, but verify your specific module before connecting.
• Raspberry Pi: Compatible via GPIO pins (3.3 V logic) — same caveat as ESP32 applies. Always use a separate motor power supply to protect the Pi.

Typical Applications

• Wheeled Robots & RC Cars: The most popular use case — drive two DC motors independently to achieve forward, reverse and differential steering.
• Bipolar Stepper Motor Control: Drive NEMA 17 or similar steppers for small CNC machines, 3D printer axes or camera sliders.
• Conveyor Belts & Automated Mechanisms: Control conveyor or linear actuator motors in DIY automation and industrial prototyping projects.
• Fan & Pump Speed Control: Use PWM on the Enable pins to regulate the speed of DC fans or small pumps in electronics cooling or fluid systems.
• Student & Educational Projects: A go-to component in university robotics labs and maker workshops across Cyprus and Greece for teaching H-Bridge motor control principles.

Technical Specifications

FAQ

Q: Can I use the L298N module's onboard 5 V output to power my Arduino?
A: Yes — when the motor supply voltage is within the module's supported range, the onboard regulator provides a 5 V output that can power your Arduino's 5 V pin. This is a common wiring shortcut in robot builds, but ensure the current draw of your Arduino and sensors does not exceed the regulator's capacity.

Q: Why does the L298N get hot during use?
A: The L298N IC has a relatively high internal voltage drop across its output transistors, which generates heat — especially at higher currents. The onboard aluminium heatsink helps, but for continuous high-current applications, ensure adequate airflow around the module.