car bluetooth 4wd
//L298 Connection
const int motorA1 = 5; // Pin in1 of L298
const int motorA2 = 6; // Pin in2 of L298
const int motorB1 = 10; // Pin in3 of L298
const int motorB2 = 11; // Pin in4 of L298
//Leds connected to Arduino UNO Pin 13-12-9
const int ledAnt = 13; // Led fari anteriori
const int ledPost = 12; //led fari posteriori
const int frecce = 9; // led luci di emergenza
//Buzzer / Speaker to Arduino UNO Pin 3
const int buzzer = 3 ;
//Useful Variables
int i=0;
int j=0;
int state;
int vSpeed=200; // Default speed, from 0 to 255
void setup() {
// Set pins as outputs:
pinMode(motorA1, OUTPUT);
pinMode(motorA2, OUTPUT);
pinMode(motorB1, OUTPUT);
pinMode(motorB2, OUTPUT);
pinMode(ledAnt, OUTPUT);
pinMode(ledPost, OUTPUT);
pinMode(frecce,OUTPUT);
// Initialize serial communication at 9600 bits per second:
Serial.begin(9600);
}
void loop() {
//Save income data to variable 'state'
if(Serial.available() > 0){
state = Serial.read();
Stop();
}
/***********************Forward****************************/
//If state is equal with letter 'A', car will go forward!
if (state == 'A') {
analogWrite(motorA1, vSpeed);
analogWrite(motorA2, 0);
analogWrite(motorB1, vSpeed);
analogWrite(motorB2, 0);
}
/***********************Backward****************************/
//If state is equal with letter 'I', car will go backward
else if (state == 'I') {
analogWrite(motorA1, 0);
analogWrite(motorA2, vSpeed);
analogWrite(motorB1, 0);
analogWrite(motorB2, vSpeed);
}
/***************************Left*****************************/
//If state is equal with letter 'S', wheels will turn left
else if (state == 'S') {
analogWrite(motorA1, 200);
analogWrite(motorA2, 0);
analogWrite(motorB1, 0);
analogWrite(motorB2, 200);
}
/***************************Right*****************************/
//If state is equal with letter 'D', wheels will turn right
else if (state == 'D') {
analogWrite(motorA1, 0);
analogWrite(motorA2, 200);
analogWrite(motorB1, 200);
analogWrite(motorB2, 0);
}
/************************Luci Anteriori*****************************/
//If state is equal with letter 'B', turn leds on or of off
else if (state == 'B') {
if (i==0){
digitalWrite(ledAnt, HIGH);
i=1;
}
else if (i==1){
digitalWrite(ledAnt, LOW);
i=0;
}
state='n';
}
/************************Luci Posteriori*****************************/
//If state is equal with letter 'E', turn leds on or of off
else if (state == 'E') {
if (i==0){
digitalWrite(ledPost, HIGH);
i=1;
}
else if (i==1){
digitalWrite(ledPost, LOW);
i=0;
}
state='n';
}
/************************Luci di Emergenza*****************************/
//If state is equal with letter 'E', turn leds on or of off
else if (state == 'F') {
if (i==0){
digitalWrite(frecce, HIGH);
delay(1000);
digitalWrite(frecce, LOW);
delay(1000);
digitalWrite(frecce, HIGH);
delay(1000);
digitalWrite(frecce, LOW);
delay(1000);
i=1;
}
else if (i==1){
digitalWrite(frecce, LOW);
i=0;
}
state='n';
}
/**********************Horn sound***************************/
//If state is equal with letter 'C', play (or stop) horn sound
else if (state == 'C'){
if (j==0){
tone(buzzer, 1000);//Speaker on
j=1;
}
else if (j==1){
noTone(buzzer); //Speaker off
j=0;
}
state='n';
}
/************************Stop*****************************/
//If state is equal with letter 'S', stop the car
else if (state == 'P'){
analogWrite(motorA1, 0);
analogWrite(motorA2, 0);
analogWrite(motorB1, 0);
analogWrite(motorB2, 0);
digitalWrite(ledPost, HIGH);
noTone(buzzer);
}
}
void Stop() {
analogWrite(motorA1, 0);
analogWrite(motorA2, 0);
analogWrite(motorB1, 0);
analogWrite(motorB2, 0);
}
