L298 motor driver

The L298N is a dual H-bridge motor driver IC used to control two DC motors or one stepper motor. It is widely used in Arduino robot car projects, including your 2WD smart car kit.

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Key Specifications

• Driver IC: L298N (Dual H-Bridge)

• Motor Voltage: 5V–35V

• Logic Voltage: 5V

• Max Current: 2A per channel (peak, with heat sink)

• Control Type: TTL logic

• PWM Speed Control: Yes

• Onboard 5V Regulator (if jumper enabled)

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Pin Description (L298N Module)

Power Section

• 12V (VIN) → Motor supply (Battery 7.4V–12V)

• 5V → Logic supply (or 5V output if regulator enabled)

• GND → Common ground

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Motor Outputs

• OUT1, OUT2 → Motor A

• OUT3, OUT4 → Motor B

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Control Pins

• ENA → Speed control Motor A (PWM)

• IN1, IN2 → Direction control Motor A

• IN3, IN4 → Direction control Motor B

• ENB → Speed control Motor B (PWM)

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How It Works (Technical Explanation)

The L298 uses H-bridge topology, allowing:

• Forward rotation

• Reverse rotation

• Braking

• Speed control via PWM

Example logic:

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Why It’s Used in 2WD Robot Car

In your 2WD smart car kit:

• Motor A → Left Wheel

• Motor B → Right Wheel

• ENA / ENB → Speed control

• Battery (2S 7.4V) → VIN

• Common GND → Arduino GND

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Advantages

• Cheap and widely available in Pakistan

• Easy to use with Arduino

• Built-in heat sink

• Supports PWM