Motor Connections

Connection and Code to create a basic car with differetial drive (2 wheels + castor). Any amount of sensors may be added to this for various applications.

Components :

• Arduino Uno
• Bread Board
• Chassis
• Wheels x 2
• Voltage Regualtor LM 7805
• Jumper Wires
• Motors x 2
• Castor wheel
• 12V Battery (Power Source)
• L293D (Motor driver)

Connections :

Code :

To check the working of the motors :

  
 
int lmotor_input1=10;
int lmotor_input2=11;
int rmotor_input3=5;
int rmotor_input4=6;


void setup()
{
  Serial.begin(9600);
pinMode(motor_input1,OUTPUT);
pinMode(motor_input2,OUTPUT);
pinMode(motor_input3,OUTPUT);
pinMode(motor_input4,OUTPUT);
}

void loop() 
{
   Serial.println("Straight");
     analogWrite(motor_input1,255);
     analogWrite(motor_input2,0);
     analogWrite(motor_input3,255);
     analogWrite(motor_input4,0);
     delay(1000);
  
  Serial.println("LEFT");
    analogWrite(motor_input1,0);
    analogWrite(motor_input2,200);
    analogWrite(motor_input3,200);
    analogWrite(motor_input4,0);
    delay(800);

 
  Serial.println("RIGHT");
     analogWrite(motor_input1,200);
     analogWrite(motor_input2,0);
     analogWrite(motor_input3,0);
     analogWrite(motor_input4,200);
     delay(800);

    Serial.println("BACK");
     analogWrite(motor_input1,0);
     analogWrite(motor_input2,255);
     analogWrite(motor_input3,0);
     analogWrite(motor_input4,255);
     delay(800); 
}