Simple Bluetooth Car

hi. This is the instructable for making a simple bluetooth controlled arduino car

Step 1: Parts

We need

Arduino
L298n motor driver
Hc 06 bluetooth module
Motor
Car base

Step 2: Wiring

From bluetooth module to arduino

VCC ---- 5v
GND ---- GND
TXD ---- RX 0

From motor driver to arduino

IN1 ---- ~5
IN2 ---- ~6
IN3 ---- ~10
IN4 ---- ~11
+12 ---- +ve of battery
GND ---- GND

From battery to arduino

+ve ----- VIN
-ve ----- GND

Step 3: Code

[code]
//Version 3.0 By Owen Sobel
//This program is used to control a robot using a app that communicates with Arduino through a bluetooth module.
//Error Code Chart: Code 01; Turnradius is higher than Speed; Code 02; Speed is higher than 255;
#define in1 5 //L298n Motor Driver pins.
#define in2 6
#define in3 10
#define in4 11
#define LED 13
int command; //Int to store app command state.
int Speed = 204; // 0 - 255.
int Speedsec;
int buttonState = 0;
int lastButtonState = 0;
int Turnradius = 0; //Set the radius of a turn, 0 - 255 Note:the robot will malfunction if this is higher than int Speed.
int brakeTime = 45;
int brkonoff = 1; //1 for the electronic braking system, 0 for normal.
void setup() {
pinMode(in1, OUTPUT);
pinMode(in2, OUTPUT);
pinMode(in3, OUTPUT);
pinMode(in4, OUTPUT);
pinMode(LED, OUTPUT); //Set the LED pin.
Serial.begin(9600); //Set the baud rate to your Bluetooth module.
}

void loop() {
if (Serial.available() > 0) {
command = Serial.read();
Stop(); //Initialize with motors stoped.
switch (command) {
case 'F':
forward();
break;
case 'B':
back();
break;
case 'L':
left();
break;
case 'R':
right();
break;
case 'G':
forwardleft();
break;
case 'I':
forwardright();
break;
case 'H':
backleft();
break;
case 'J':
backright();
break;
case '0':
Speed = 100;
break;
case '1':
Speed = 140;
break;
case '2':
Speed = 153;
break;
case '3':
Speed = 165;
break;
case '4':
Speed = 178;
break;
case '5':
Speed = 191;
break;
case '6':
Speed = 204;
break;
case '7':
Speed = 216;
break;
case '8':
Speed = 229;
break;
case '9':
Speed = 242;
break;
case 'q':
Speed = 255;
break;
}
Speedsec = Turnradius;
if (brkonoff == 1) {
brakeOn();
} else {
brakeOff();
}
}
}

void forward() {
analogWrite(in1, Speed);
analogWrite(in3, Speed);
}

void back() {
analogWrite(in2, Speed);
analogWrite(in4, Speed);
}

void left() {
analogWrite(in3, Speed);
analogWrite(in2, Speed);
}

void right() {
analogWrite(in4, Speed);
analogWrite(in1, Speed);
}
void forwardleft() {
analogWrite(in1, Speedsec);
analogWrite(in3, Speed);
}
void forwardright() {
analogWrite(in1, Speed);
analogWrite(in3, Speedsec);
}
void backright() {
analogWrite(in2, Speed);
analogWrite(in4, Speedsec);
}
void backleft() {
analogWrite(in2, Speedsec);
analogWrite(in4, Speed);
}

void Stop() {
analogWrite(in1, 0);
analogWrite(in2, 0);
analogWrite(in3, 0);
analogWrite(in4, 0);
}

void brakeOn() {
//Here's the future use: an electronic braking system!
// read the pushbutton input pin:
buttonState = command;
// compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter
if (lastButtonState == 'F') {
if (buttonState == 'S') {
back();
delay(brakeTime);
Stop();
}
}
if (lastButtonState == 'B') {
if (buttonState == 'S') {
forward();
delay(brakeTime);
Stop();
}
}
if (lastButtonState == 'L') {
if (buttonState == 'S') {
right();
delay(brakeTime);
Stop();
}
}
if (lastButtonState == 'R') {
if (buttonState == 'S') {
left();
delay(brakeTime);
Stop();
}
}
}
// save the current state as the last state,
//for next time through the loop
lastButtonState = buttonState;
}
void brakeOff() {

}
[/code]

Step 4: Conclution

so if you have done the above correctly you will have made a bluetooth controlled car. Thanks