Arduino MotorDriver Library

This library let's you easily switch between different methods of controlling motors.

Assume you have the following code which controls a DC motor via an PWM and direction pin:

// code without MotorDriver library

const int MOTOR_DIR_PIN = 5;
const int MOTOR_PWM_PIN = 6;

void setup() {
    pinMode(MOTOR_DIR_PIN, OUTPUT);
    pinMode(MOTOR_PWM_PIN, OUTPUT);
}

void loop() {
    // forward
    digitalWrite(MOTOR_DIR_PIN, HIGH);
    analogWrite(MOTOR_PWM_PIN, 255);
    delay(1000);

    // stop
    analogWrite(MOTOR_PWM_PIN, 0);
    delay(1000);

    // backward
    digitalWrite(MOTOR_DIR_PIN, LOW);
    analogWrite(MOTOR_PWM_PIN, 255);
    delay(1000);

    // stop
    analogWrite(MOTOR_PWM_PIN, 0);
    delay(1000);
}

With this library this can be simplified to:

#include <MotorDriver.h>

DirPwmMotor motor(5, 6);

void setup() {}

void loop() {
    motor.setSpeed(255);
    delay(1000);

    motor.stop();
    delay(1000);

    motor.setSpeed(-255);
    delay(1000);

    motor.stop();
    delay(1000);
}

Now imagine you change the motor control circuit and now have two separate direction pins FWD and BWD and a PWM pin for speed. With this library you only need to change the DirPwmMotor to FwdBwdPwmMotor:

-DirPwmMotor motor(5, 6);
+FwdBwdPwmMotor motor(4, 5, 6);

A MotorDriver has a super simple api:

int speed();
void setSpeed(int speed);
bool reversed();
void setReversed(bool reversed);
void stop(bool brake = false);

The following implementations are available:

PRs / issues welcome!