Serial Read returns odd value...

Forum 2005-2010 (read only) General Frequently-Asked Questions
3

Yes, My code is the same. So where did the -1 come from? i have never seen it before. The complete code is here...

#define outputpin 13

int ser_in1=0, ser_in2=0;
void setup()
{
  pinMode(outputpin,OUTPUT);
  Serial.begin(9600);
  
}

void loop()
{
  if(Serial.available() > 0)
  {
    ser_in1 = Serial.read();
    Serial.print(ser_in1);
    if(ser_in1 == 66)
    {
      ser_in2 = Serial.read();
      Serial.print(ser_in2);
      if(ser_in2 == 48)
        control_device(0);
      if(ser_in2 == 49)
        control_device(1);
    }
  }
}

void control_device(int state)
{
  digitalWrite(outputpin,state);
}

And the output i get when i pass 'B1' now is 66-149

How do i correct this? :-/