Using Arduino and Bluetooth control a two-drive car

Two-Driver Car Side

• 1 x Arduino Pro, Deal the Bluetooth data to car servo
• 1 x Bluetooth Bee, Received the Bluetooth data from control side, powen on auto paired with Bluetooth Shield
• 1 x Bee adapter,For plugin Bluetooth Bee
• 1 x two-driver Car

??? Flow chart

 ??? Code

Freaduino Control Side code

[cce_cpp]
//

#include <NewSoftSerial.h>
#include <avr/pgmspace.h>

#define rxPin 2
#define txPin 3

NewSoftSerial mySerial(rxPin, txPin);

void setup()
{
  // define pin modes for tx, rx pins:
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  pinMode(A0, INPUT);
  pinMode(A1, INPUT);

  mySerial.begin(9600);
  Serial.begin(9600);
}

void loop(){
   // 0.175 is for Correcting the pox to 90, servor pos defoult 90. This data you can change by yourself
   int posX=(int)analogRead(A0)*0.175;
   int posY=(int)analogRead(A1)*0.175;

   mySerial.print("x");
   mySerial.print(posX);
   mySerial.print("y");
   mySerial.print(posY);
   mySerial.println("End");

   Serial.print("x=");
   Serial.println(posX);
   Serial.print("y=");
   Serial.println(posY);

   delay(300);
 }

[/cce_cpp]

Arduino Control Side code

[cce_cpp]
#include <NewSoftSerial.h>
#include <Servo.h>
#include <String.h>

#define rxPin 2
#define txPin 3
NewSoftSerial mySerial(rxPin, txPin);

Servo myservoX;  // create servo object to control a servo
Servo myservoY;                // a maximum of eight servo objects can be created 

void setup()
{
  Serial.begin(9600);
  mySerial.begin(9600);
  myservoX.attach(5);  // attaches the servo on pin 9 to the servo object
  myservoY.attach(3);
}

void loop() {
  int i = 0, n=0, count=0;
  char someChar[32]={0};
  // when characters arrive over the serial port...
  if(Serial.available()) {
    do{
      someChar[i++] = Serial.read();
    }while (Serial.available() > 0);

    if(someChar[0] == 'x')
    {
      int flag = 1;
      while(flag)
      {
          if(Serial.available()) {
              do{
                    someChar[count++] = Serial.read();
              }while (Serial.available() > 0);

              if(strstr(someChar, "End"))
              { 
                flag=0;
                while(someChar[n] != 'y') n++;
                char tmpbufx[4] = {0};
                strncpy(tmpbufx, someChar, n);
                int posX = atoi(tmpbufx);
                myservoX.write(posX);

                n=0;
                char* str = strchr(someChar,'y');
                char tmpbufy[4] = {0};
                while(str[n] != 'E') n++;
                strncpy(tmpbufy, str+1, n-1);
                int posY = atoi(tmpbufy);
                if(posY>105) posY = 105;
                else if(posY<85) posY = 85;
                myservoY.write(posY); 
              }
          }
      }
    }
  }
}
[/cce_cpp]

??? Cautions :

• Please set Bluetooth Shield to Atuo paired mode. You need enter AT mode, and used AT+CMODE=1  . Please make sure you Master and chient Bluetooth Module has the same pair password.