Cytron MDD20A Dual Channel 20A DC Motor Driver

Power

• VB+ (Positive) / VB- (Negative): Connect it to a battery (6V to 30V DC)
• M1A, M1B: Connect to Motor 1
• M2A, M2B: Connect to Motor 2

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Signal

Connections for Arduino UNO

• DIR 1: Connect it to pin D4
• PWM 1: Connect it to pin D3
• DIR 2: Connect it to pin D10
• PWM 2: Connect it to pin D9
• GND: Connect it to Arduino GND pin

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Code

Before we move into coding, first we need to install the Cytron Motor Drivers Library written by Cytron Technologies in the Arduino IDE. 

You can install this library by directly going to Tools > Manage Libraries which opens the Library Manager. In the library manager search for Cytron Motor Drivers Library using the search bar and click on the install button to install the latest version of the library.

After installtion go to File > Examples > Cytron Motor Drivers Library > select any one example.

We are using the example "PWM_DIR_DUAL" from the example menu for the code below.

/*******************************************************************************
 * THIS SOFTWARE IS PROVIDED IN AN "AS IS" CONDITION. NO WARRANTY AND SUPPORT
 * IS APPLICABLE TO THIS SOFTWARE IN ANY FORM. CYTRON TECHNOLOGIES SHALL NOT,
 * IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL
 * DAMAGES, FOR ANY REASON WHATSOEVER.
 ********************************************************************************
 * DESCRIPTION:
 *
 * This example shows how to drive 2 motors using the PWM and DIR pins with
 * 2-channel motor driver.
 * 
 * 
 * CONNECTIONS:
 * 
 * Arduino D3  - Motor Driver PWM 1 Input
 * Arduino D4  - Motor Driver DIR 1 Input
 * Arduino D9  - Motor Driver PWM 2 Input
 * Arduino D10 - Motor Driver DIR 2 Input
 * Arduino GND - Motor Driver GND
 *
 *
 * AUTHOR   : Kong Wai Weng
 * COMPANY  : Cytron Technologies Sdn Bhd
 * WEBSITE  : www.cytron.io
 * EMAIL    : [email protected]
 *
 *******************************************************************************/

 #include "CytronMotorDriver.h"


// Configure the motor driver.
CytronMD motor1(PWM_DIR, 3, 4);  // PWM 1 = Pin 3, DIR 1 = Pin 4.
CytronMD motor2(PWM_DIR, 9, 10); // PWM 2 = Pin 9, DIR 2 = Pin 10.


// The setup routine runs once when you press reset.
void setup() {
  
}


// The loop routine runs over and over again forever.
void loop() {
  motor1.setSpeed(128);   // Motor 1 runs forward at 50% speed.
  motor2.setSpeed(-128);  // Motor 2 runs backward at 50% speed.
  delay(1000);
  
  motor1.setSpeed(255);   // Motor 1 runs forward at full speed.
  motor2.setSpeed(-255);  // Motor 2 runs backward at full speed.
  delay(1000);

  motor1.setSpeed(0);     // Motor 1 stops.
  motor2.setSpeed(0);     // Motor 2 stops.
  delay(1000);

  motor1.setSpeed(-128);  // Motor 1 runs backward at 50% speed.
  motor2.setSpeed(128);   // Motor 2 runs forward at 50% speed.
  delay(1000);
  
  motor1.setSpeed(-255);  // Motor 1 runs backward at full speed.
  motor2.setSpeed(255);   // Motor 2 runs forward at full speed.
  delay(1000);

  motor1.setSpeed(0);     // Motor 1 stops.
  motor2.setSpeed(0);     // Motor 2 stops.
  delay(1000);
}