CoffeeBotBluetooth.ino

/*
  This program makes your robot move according to commands transmitted to it over bluetooth connection
  bluetooth module should be connected to pins 10,11 (RX, TX)
  reference bluetooth module:
  http://dx.com/p/jy-mcu-arduino-bluetooth-wireless-serial-port-module-104299#.UuBS5rSxVL5
  Controlling Android app: Bluetooth RC Controller, available at:
  https://play.google.com/store/apps/details?id=braulio.calle.bluetoothRCcontroller&hl=en
*/

#include <SoftwareSerial.h>

SoftwareSerial bluetooth(10, 11); // RX, TX

void setup()
{
  // Set the mode of the digital pins to outputs to drive the motors, LED and horn
  pinMode( 3, OUTPUT ); // motor
  pinMode( 5, OUTPUT ); // motor
  pinMode( 8, OUTPUT ); // speaker
  pinMode( 9, OUTPUT ); // LED
  Serial.begin(9600);
  bluetooth.begin(9600);
  //setup_bt();
}

int current_speed = 0;

void loop()
{
  if (bluetooth.available()) {
    char cmd = bluetooth.read();
    switch(cmd) {
      case '0':
        Serial.println("Speed: 0");
        current_speed = 0;
        break;
      case '1':
        Serial.println("Speed: 1");
        current_speed = 1;
        break;
      case '2':
        Serial.println("Speed: 2");
        current_speed = 2;
        break;
      case '3':
        Serial.println("Speed: 3");
        current_speed = 3;
        break;
      case '4':
        Serial.println("Speed: 4");
        current_speed = 4;
        break;
      case '5':
        Serial.println("Speed: 5");
        current_speed = 5;
        break;
      case '6':
        Serial.println("Speed: 6");
        current_speed = 6;
        break;
      case '7':
        Serial.println("Speed: 7");
        current_speed = 7;
        break;
      case '8':
        Serial.println("Speed: 8");
        current_speed = 8;
        break;
      case '9':
        Serial.println("Speed: 9");
        current_speed = 9;
        break;
      case 'F':
        Serial.println("Forward");
        // digitalWrite( 3, HIGH );
        // digitalWrite( 5, HIGH );
        analogWrite(3, map(current_speed, 0, 9, 0, 255));
        analogWrite(5, map(current_speed, 0, 9, 0, 255));
        break;
      case 'S':
        Serial.println("Stop");
        digitalWrite( 3, LOW );
        digitalWrite( 5, LOW );
        break;
      case 'R':
        Serial.println("Right");
        digitalWrite( 3, LOW );
        //digitalWrite( 5, HIGH );
        analogWrite(5, map(current_speed, 0, 9, 0, 255));
        break;
      case 'L':
        Serial.println("Left");
        // digitalWrite( 3, HIGH );
        analogWrite(3, map(current_speed, 0, 9, 0, 255));
        digitalWrite( 5, LOW );
        break;
      case 'W':
        Serial.println("Light On");
        digitalWrite( 9, HIGH );
        break;
      case 'w':
        Serial.println("Light Off");
        digitalWrite( 9, LOW );
        break;
      case 'V':
        Serial.println("Hooter On");
        tone( 8, 440 );
        break;
      case 'v':
        Serial.println("Hooter Off");
        noTone( 8 );
        break;
      default:
        Serial.print("Unsupported command: ");
        Serial.println(cmd);
    }
  }
}

void setup_bt() {
  delay(1000);
  bluetooth.print("AT");
  delay(1000);
  bluetooth.print("AT+VERSION");
  delay(1000);
  bluetooth.print("AT+PIN1234");
  delay(1000);
  bluetooth.print("AT+NAMEZvikaCoffeeBot");
  delay(1000);
//  bluetooth.print("AT+BAUD4");
//  delay(1000);
}