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How to Connect L298N with Arduino Uno

Connecting an L298N motor driver with an Arduino Uno involves several steps to ensure proper functionality and control of motors. Here’s a step-by-step guide to help you:

Components Needed:

1. Arduino Uno
2. L298N motor driver module
3. DC motors (2 motors typically)
4. Power supply (appropriate voltage for your motors)

Wiring Instructions:

L298N Motor Driver Module:

1. Power Connections:

   • VCC & GND: Connect the VCC and GND pins of the L298N module to an external power source that matches the voltage requirement of your motors (typically 6V to 12V DC). Ensure the ground of this power source is connected to the Arduino ground for common reference.
   • 5V Logic Supply: Some L298N modules have a 5V output that can be used to power the Arduino Uno. You can connect the 5V output of the L298N to the 5V pin on the Arduino Uno, but make sure your power supply can handle the total current draw.

2. Motor Connections:

   • Motor Outputs (OUT1, OUT2, OUT3, OUT4): Connect the two DC motors to these outputs. The connections are usually labeled OUT1/OUT2 and OUT3/OUT4. The polarity matters here; if the motor turns in the wrong direction, swap the connections to OUT1/OUT2 or OUT3/OUT4.

3. Control Connections:

   • Enable Pins (ENA, ENB): These are the enable pins for the motor channels. Connect ENA to a PWM-capable pin on the Arduino (e.g., pin 9), and ENB to another PWM pin (e.g., pin 10). These pins will control the speed of the motors.
   • Direction Control (IN1, IN2, IN3, IN4): Connect the IN1, IN2, IN3, and IN4 pins to digital output pins on the Arduino (e.g., IN1 to Arduino pin 8, IN2 to pin 7, IN3 to pin 6, and IN4 to pin 5). These pins will control the direction of each motor.

Arduino Uno:

1. Arduino Power:

   • Connect the Arduino Uno to your computer via USB for programming.

2. Signal Connections:

   • PWM Pins: Connect PWM pins (e.g., 9, 10) on the Arduino to ENA and ENB on the L298N module.
   • Digital Output Pins: Connect digital output pins on the Arduino (e.g., 8, 7, 6, 5) to IN1, IN2, IN3, and IN4 on the L298N module.