Arduino Mega 2560 DC Motor code

DC motors can be controlled by the L298N DC motor driver IC, which is connected to your microcontroller. L298Ns can control up to 2 DC motors. You can easily add motors through the program code. You can set DC motor speed by changing the duty-cycle of each PWM signal. The PWM is a square-wave signal which has two parameters: frequency and duty-cycle. If a PWM signal's duty-cycle is 100% than the motor spins with maximum rpm. In case of 0% the motor will stop. Motor speed and direction in your Ozeki software can be changed on each motor with the motor's own adjustable slide bar from -100% to 100%. If the slide crosses 0 than the motor will change spin direction.

arduino with dc motor controller board
Figure 1 - Arduino Mega 2560 with DC Motor Controller Board LM298

Required hardware

  • Arduino Mega 2560
  • DC Motor Controller Board LM298
  • DC Motor(s)

Source code to install on controller

Before you upload this code to your Arduino, please format the EEPROM... 
#include <OzIDManager.h>
#include <OzDCMotorControllerL298N.h>

OzIDManager* manager;
OzDCMotorControllerL298N* dcMotorController;

const DCMotorMode motorMode = DCMotorMode::PWM;  //Default value: PWM
const DCMotorUnit motorUnit = DCMotorUnit::BOTH;  //Default value: MOTOR_B
const int inPin1 = 14;  //Default value: 14
const int inPin2 = 15;  //Default value: 15
const int inPin3 = 16;  //Default value: 16
const int inPin4 = 17;  //Default value: 17
const int ENA = 9;
const int ENB = 10;

void setup()
{
  Serial.begin(115200);

  manager = new OzIDManager;
  manager->_sendACK = true;
  manager->_checksum = true;

  OzCommunication::setIDManager(manager);

  dcMotorController =
  	new OzDCMotorControllerL298N(motorMode, inPin1, inPin2, inPin3, inPin4, ENA, ENB);
  
  int x=1;
  manager->sendLinkSetup();
  manager->PrintWelcomeLine(dcMotorController, x++, "MyDCMotors");
}

void loop()
{
    OzCommunication::communicate();
    dcMotorController->ownLoop();
}

More information