title: Android and Arduino both receiving strange values via Bluetooth
body: <p>I am using BluetoothChat code on the Android side to send an ON/OFF signal (I am sending 110, 119 or other cases as defined below) to the Arduino UNO using the chat box, but when I display the received value, it shows strange values in the Arduino Serial monitor, that is, 255, 254, 250 or 245 and replies with strange values on the Android side too.</p>
  
  <p>but suprisingly only single condition among 110, 119, etc gets true when i send these commands from android and no other instruction/LED gets properly executed/turned ON/off.</p>
  
  <p>Can any one help me figure out the problem? Below is my arduino code.</p>
  
  <pre><code>int data; 
  String message; 
  
  void setup () 
  { 
  Serial.begin (57600); 
  
  pinMode (6, OUTPUT); 
  pinMode (7, OUTPUT); 
  pinMode (8, OUTPUT); 
  pinMode (9, OUTPUT); 
  pinMode (10, OUTPUT); 
  
  digitalWrite(6, LOW); // off LED 1 at pin6 
  digitalWrite(7, LOW); // off LED 2 at pin7 
  digitalWrite(8, LOW); // off LED 3 at pin8 
  digitalWrite(9, LOW); // off LED 4 at pin9 
  digitalWrite(10, LOW); // off LED 5 at pin10 
  }
  
  void loop () { 
  int i=0; 
  if (Serial.available()&gt;0) 
  { 
  int data= Serial.read(); 
  
  Serial.println (" Received data: "); 
  Serial.println (data); 
  
  if (data==110) //q 
  { 
  digitalWrite(6, HIGH); // turn on LED 1 at pin6 
  message = "LED 1 On"; 
  Serial.println (message); 
  
  } 
  if (data==102) // a 
  { 
  digitalWrite(6, LOW); // off LED 1 at pin6 
  message = "LED 1 Off"; 
  Serial.println (message); 
  } 
  
  if (data==96) //c 
  { 
  digitalWrite(7, HIGH); //on LED 2 
  message = "LED 2 On"; 
  Serial.println (message); 
  } 
  
  if (data==115) //d 
  { 
  digitalWrite(7, LOW); // off LED 2 
  message = "LED 2 Off"; 
  Serial.println (message); 
  } 
  
  if (data==111) //e 
  { 
  digitalWrite(8, HIGH); //on LED 3 
  message = "LED 3 On"; 
  Serial.println (message); 
  } 
  
  if (data==97)// f 
  { 
  digitalWrite(8, LOW); //sets the LED 3 
  message = "LED 3 Off"; 
  Serial.println (message); 
  } 
  
  if (data==107) //g 
  { 
  digitalWrite(9, HIGH); //turn on LED 4 
  message = "LED 4 On"; 
  Serial.println (message); 
  } 
  
  if (data==120)//h 
  { 
  digitalWrite(9, LOW); //sets the LED 4 
  message = "LED 4 Off"; 
  Serial.println (message); 
  } 
  
  
  if (data==99) //i 
  { 
  digitalWrite(10, HIGH); //sets the LED 5 
  message = "L5 high"; 
  Serial.println (message); 
  } 
  
  if (data==104) //j 
  { 
  digitalWrite(10, LOW); //sets the LED 5 
  message = "LED 5 Off"; 
  Serial.println (message); 
  } 
  
  if (data==112) //y 
  { 
  digitalWrite(6, HIGH); // turn on ALL LEDs 
  digitalWrite(7, HIGH); 
  digitalWrite(8, HIGH); 
  digitalWrite(9, HIGH); 
  digitalWrite(10, HIGH); 
  message = "ALL LEDs ON"; 
  Serial.println (message); 
  } 
  
  
  if (data==122)//z 
  { 
  digitalWrite(6, LOW); //Turn off all LEDs 
  digitalWrite(7, LOW); 
  digitalWrite(8, LOW); 
  digitalWrite(9, LOW); 
  digitalWrite(10, LOW); 
  Serial.println ("ALL LEDs OFF"); 
  } 
  
  else 
  { 
  digitalWrite(13, HIGH); //sets the LED 5 
  delay(3000); //3sec 
  digitalWrite(13, LOW); 
  delay(3000); 
  Serial.println (" else case executed "); 
  
  } ////end of else 
  
  }
  data=0;
  }
  </code></pre>