My motor wont work

hi everyone, i'm having a really hard time right now. i follow everything from this figure, but still, my motor wont work. only my hc05 is successfully connected to the phone. i only changed the battery where i changed it to six 2A battery resulting 7.5V, but the motor still not working. can someone help me? Thanks!!!

Please read the first topic telling how to get the best from this forum.
Please post code, the proper way using code tags, post a wiring diagram, not a wall painting.

and links to motors, driver board.

sorry sir. ok here u go :slight_smile:

and this is the coding that i used.
#include "AFMotor.h"

int MOTOR_1 = 1;
int MOTOR_2 = 2;
int MOTOR_3 = 3;
int MOTOR_4 = 4;

AF_DCMotor motor1(MOTOR_1, MOTOR12_64KHZ); // create motor object, 64KHz pwm
AF_DCMotor motor2(MOTOR_2, MOTOR12_64KHZ); // create motor object, 64KHz pwm
AF_DCMotor motor3(MOTOR_3, MOTOR12_64KHZ); // create motor object, 64KHz pwm
AF_DCMotor motor4(MOTOR_4, MOTOR12_64KHZ); // create motor object, 64KHz pwm

int state;
int Speed = 130;

void setup() {
motor1.setSpeed(Speed); // set the motor speed to 0-255
motor2.setSpeed(Speed);
motor3.setSpeed(Speed);
motor4.setSpeed(Speed);
Serial.begin(9600);
delay(500);
}

void loop(){
if(Serial.available() > 0){ //if some date is sent, reads it and saves in state
state = Serial.read();
if(state > 10){Speed = state;}
}

motor1.setSpeed(Speed); // set the motor speed to 0-255
motor2.setSpeed(Speed);
motor3.setSpeed(Speed);
motor4.setSpeed(Speed);

//===============================================================================
// Key Control Command
//===============================================================================
if(state == 1){forword(); } // if the state is '1' the DC motor will go forward
else if(state == 2){backword();} // if the state is '2' the motor will Reverse
else if(state == 3){turnLeft();} // if the state is '3' the motor will turn left
else if(state == 4){turnRight();} // if the state is '4' the motor will turn right
else if(state == 5){Stop(); } // if the state is '5' the motor will Stop
/////////////////////////////////////END\\\\\\\\\\\\\\\\\\\\\

//===============================================================================
// Voice Control Command
//===============================================================================
else if(state == 6){turnLeft(); delay(400); state = 5;}
else if(state == 7){turnRight(); delay(400); state = 5;}
/////////////////////////////////////END\\\\\\\\\\\\\\\\\\\\\

delay(80);
}

void forword(){
motor1.run(FORWARD); // turn it on going forward
motor2.run(FORWARD);
motor3.run(FORWARD);
motor4.run(FORWARD);
}

void backword(){
motor1.run(BACKWARD); // the other way
motor2.run(BACKWARD);
motor3.run(BACKWARD);
motor4.run(BACKWARD);
}

void turnRight(){
motor1.run(FORWARD); // the other right
motor2.run(FORWARD);
motor3.run(BACKWARD);
motor4.run(BACKWARD);
}

void turnLeft(){
motor1.run(BACKWARD); // turn it on going left
motor2.run(BACKWARD);
motor3.run(FORWARD);
motor4.run(FORWARD);
}

void Stop(){
motor1.run(RELEASE); // stopped
motor2.run(RELEASE);
motor3.run(RELEASE);
motor4.run(RELEASE);
}

Please read the first topic telling how to get the best from this forum.
It tells how to post code the right way using code tags.
Post a proper wiring diagram.
I don't find any links to data sheets for motors, driver board etc..

64kHz PWM is far too fast for L293D chips I fear. Try MOTOR12_8KHZ for motors 1 and 2,
and MOTOR34_8KHZ for motors 3 and 4.