Example Code for Arduino-Dual Motor Control

Hardware Preparation

• DFRduino UNO R3 (or similar) x 1
• Dual-Channel DC Motor Driver-12A x1
• Wires

Software Preparation

• Arduino IDE

Wiring Diagram

Sample Code

/*
    This sample code is for testing the 2 stepper motors
    The rotation velocity can be adjusted by the code switch
    Microcontroller: Arduino UNO
*/
int PWM1 = 2;
int INA1 = 3;
int INB1 = 4;
int PWM2 = 5;
int INA2 = 6;
int INB2 = 7;
void setup()
{
  pinMode(PWM1, OUTPUT);
  pinMode(INA1, OUTPUT);
  pinMode(INB1, OUTPUT);
  pinMode(PWM2, OUTPUT);
  pinMode(INA2, OUTPUT);
  pinMode(INB2, OUTPUT);
}
void loop()
{
  digitalWrite(INA1, LOW);
  digitalWrite(INA2, LOW);
  digitalWrite(INB1, HIGH);
  digitalWrite(INB2, HIGH);
  analogWrite(PWM1, 255);  //PWM adjust speed
  analogWrite(PWM2, 255);  //PWM adjust speed
  delay(1000);
  digitalWrite(INA1, LOW);
  digitalWrite(INB1, HIGH); //Motor 1 rotate forward 
  digitalWrite(INA2, HIGH);
  digitalWrite(INB2, LOW);  //Motor 2 rotate backward 
  analogWrite(PWM1, 255);  //PWM adjust speed
  analogWrite(PWM2, 255); //PWM adjust speed
  delay(1000);
  digitalWrite(INA1, LOW);
  digitalWrite(INB1, LOW); //Motor 1 stop 
  digitalWrite(INA2, LOW);
  digitalWrite(INB2, LOW); //Motor 2 stop 
  analogWrite(PWM1, 255);
  analogWrite(PWM2, 255);
  delay(1000);
}

Result

Result: two motors rotate forward simultaneously; one rotate forward, the other rotate backward; stop rotating.