Monster Moto Single-Channel Motor Driver VNH2SP30 High-current up to 30A

• Max. Input Voltage: 16VDC
• Max. Current Rating: 30A
• Practical Continuous Current: 14A
• MOSFET on-resistance: 19 mΩ per leg
• Max. PWM Frequency: 20 kHz
• Weight: 25g
• Size: 53 x 22mm

Packaging Included

• 1 x VNH2S930 Module
• 1 x Row of 7-Pin header

Note:

When using this board in extreme high-demand applications it may be necessary to improve thermal performance with a heat-sink or fan and to solder the wires directly to the board instead of using a screw terminal (in addition to the myriad other complications present in a high-current system) However,when using the board at currents up to 6A the chips will barely become noticeably warm.

PWM: Value between "0" and "255" to control the speed of the motor

#define BRAKE 0
#define CW    1
#define CCW   2
#define CS_THRESHOLD 15   // Definition of safety current (Check: "1.3 Monster Shield Example").

//MOTOR 1
#define MOTOR_A1_PIN 7  //Driver Board IN1
#define MOTOR_B1_PIN 8  //Driver Board IN2
#define PWM_MOTOR_1 5   //Driver Board PWM
#define EN_PIN_1 A0     //Driver Board EN
#define MOTOR_1 0

short usSpeed = 150;  //default motor speed
unsigned short usMotor_Status = BRAKE;
 
void setup()                         
{
  pinMode(MOTOR_A1_PIN, OUTPUT);
  pinMode(MOTOR_B1_PIN, OUTPUT);
  pinMode(PWM_MOTOR_1, OUTPUT);
  pinMode(EN_PIN_1, OUTPUT);

  Serial.begin(9600);              // Initiates the serial to do the monitoring 
  Serial.println("Begin motor control");
  Serial.println(); //Print function list for user selection
  Serial.println("Enter number for control option:");
  Serial.println("1. STOP");
  Serial.println("2. FORWARD");
  Serial.println("3. REVERSE");
  Serial.println("4. READ CURRENT");
  Serial.println("+. INCREASE SPEED");
  Serial.println("-. DECREASE SPEED");
  Serial.println();

}

void loop() 
{
  char user_input;   

  while(Serial.available())
  {
    user_input = Serial.read(); //Read user input and trigger appropriate function
    digitalWrite(EN_PIN_1, HIGH);

    if (user_input =='1')
    {
       Stop();
    }
    else if(user_input =='2')
    {
      Forward();
    }
    else if(user_input =='3')
    {
      Reverse();
    }
    else if(user_input =='+')
    {
      IncreaseSpeed();
    }
    else if(user_input =='-')
    {
      DecreaseSpeed();
    }
    else
    {
      Serial.println("Invalid option entered.");
    }
      
  }
}

void Stop()
{
  Serial.println("Stop");
  usMotor_Status = BRAKE;
  motorGo(MOTOR_1, usMotor_Status, 0);
}

void Forward()
{
  Serial.println("Forward");
  usMotor_Status = CW;
  motorGo(MOTOR_1, usMotor_Status, usSpeed);
}

void Reverse()
{
  Serial.println("Reverse");
  usMotor_Status = CCW;
  motorGo(MOTOR_1, usMotor_Status, usSpeed);
}

void IncreaseSpeed()
{
  usSpeed = usSpeed + 10;
  if(usSpeed > 255)
  {
    usSpeed = 255;  
  }
  
  Serial.print("Speed +: ");
  Serial.println(usSpeed);

  motorGo(MOTOR_1, usMotor_Status, usSpeed);
}

void DecreaseSpeed()
{
  usSpeed = usSpeed - 10;
  if(usSpeed < 0)
  {
    usSpeed = 0;  
  }
  
  Serial.print("Speed -: ");
  Serial.println(usSpeed);

  motorGo(MOTOR_1, usMotor_Status, usSpeed);
}

void motorGo(uint8_t motor, uint8_t direct, uint8_t pwm)         //Function that controls the variables: motor(0 ou 1), direction (cw ou ccw) e pwm (entra 0 e 255);
{
  if(motor == MOTOR_1)
  {
    if(direct == CW)
    {
      digitalWrite(MOTOR_A1_PIN, LOW);
      digitalWrite(MOTOR_B1_PIN, HIGH);
    }
    else if(direct == CCW)
    {
      digitalWrite(MOTOR_A1_PIN, HIGH);
      digitalWrite(MOTOR_B1_PIN, LOW);      
    }
    else
    {
      digitalWrite(MOTOR_A1_PIN, LOW);
      digitalWrite(MOTOR_B1_PIN, LOW);            
    }
    
    analogWrite(PWM_MOTOR_1, pwm);
  }

}

Upload and open the “Serial Monitor” in Arduino IDE and command.