 
   delay(1000);
 
-  n_base = analogRead(north) - 150;
-  w_base = analogRead(west) - 150;
-  e_base = analogRead(east) - 150;
+  n_base = analogRead(north) - 50;
+  w_base = analogRead(west) - 50;
+  e_base = analogRead(east) - 50;
   //s_base = analogRead(south) - 50;
 
 //  lcd.clear();



#include <SoftwareSerial.h>
#define BT_SERIAL_TX_DIO 10 
#define BT_SERIAL_RX_DIO 11

SoftwareSerial BT(BT_SERIAL_TX_DIO, BT_SERIAL_RX_DIO);


    //some error
    //continue along previous path 
    //lcd.print("don't know");
    BT.print("don't know");
  }
  }
  else
  {
    //lcd.print("no signal");
    BT.print("no signal");
    analogWrite(l1_motor, 0);
    analogWrite(l2_motor, 0);
    analogWrite(r1_motor, 0);
    analogWrite(r2_motor, 0);
  }

  BT.println();
  BT.println();
}


