Control 2 Motors With the L293DNE Dual Motor Driver IC and Arduino 101

This is a dual motor driver board using the L293DNE IC which is a quadruple half-H-bridge. It is used to run two motors at variable speeds controlled by the Arduino 101.

• Arduino
• 2x DC Motor
• L239DNE IC
• Breadboard wires
• 6x Jumper Wires
• Breadboard

Connect pins 1, 8, 9, 16 of the L293DNE IC all to 5V from the Arduino.

Connect pins 4, 5, 12, 13 of the L293DNE IC to ground.

Connect the following IC pins to the Arduino with the jumper wire colour in the images serving as a guide.

Connect the two leads of one DC motor to pins 3 and 6 of the L293DNE IC. And connect the second DC motor pins to pins 11 and 14 of the L293DNE IC.

Select the appropriate board under tools and it's corresponding port once connected. Then, upload the following code to the board.

//Motor A
const int motorPin1  = 3;  // Pin 14 of L293
const int motorPin2  = 5;  // Pin 10 of L293
//Motor B
const int motorPin3  = 6; // Pin  7 of L293
const int motorPin4  = 9;  // Pin  2 of L293

//This will run only one time.
void setup(){
 
    //Set pins as outputs
    pinMode(motorPin1, OUTPUT);
    pinMode(motorPin2, OUTPUT);
    pinMode(motorPin3, OUTPUT);
    pinMode(motorPin4, OUTPUT);
    
    //Motor Control - Motor A: motorPin1,motorpin2 & Motor B: motorpin3,motorpin4

   
}

void loop(){
  
 //This code  will turn Motor A clockwise for 2 sec.
    digitalWrite(motorPin1, HIGH);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
    delay(2000); 
    //This code will turn Motor A counter-clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, HIGH);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
    delay(2000);
    
    //This code will turn Motor B clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, HIGH);
    digitalWrite(motorPin4, LOW);
    delay(2000); 
    //This code will turn Motor B counter-clockwise for 2 sec.
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, HIGH);
    delay(2000);    
    
    //And this code will stop motors
    digitalWrite(motorPin1, LOW);
    digitalWrite(motorPin2, LOW);
    digitalWrite(motorPin3, LOW);
    digitalWrite(motorPin4, LOW);
  
}