  // define a pin for Photo resistor (ADC input!)
  #define LDR_PIN    14
 #endif // USE_LDR
+
+#ifdef USE_LEDS
+ #define LED1       4
+ #define LED2       5
+ #define LED3       6
+ #define LED4       7
+#endif // USE_LEDS
 
 // Data wire is plugged into port 2 on the Arduino
 #define ONE_WIRE_BUS 2

//
#include <DallasTemperature.h>

#ifdef SEND_DATA
 #define TX_PIN     10


  SEND_LDR(ldr_value);
#endif // USE_LDR

#ifdef USE_LEDS
  digitalWrite(LED1, ((gCycleCounter & 0x02) ? HIGH : LOW));
  digitalWrite(LED2, ((gCycleCounter & 0x02) ? LOW : HIGH));
  digitalWrite(LED3, ((gCycleCounter & 0x04) ? HIGH : LOW));
  digitalWrite(LED4, ((gCycleCounter & 0x08) ? HIGH : LOW));
#endif // USE_LEDS

  SEND_SYNC(2);
  
  gCycleCounter = ( gCycleCounter == 0x1ff ) ? 0 : (gCycleCounter+1);
