 #define PIN_ANALOG_I2C_SDA      4 // i2c enabled by jumper
 #define PIN_ANALOG_I2C_SCL      5 // i2c enabled by jumper
 
-#ifdef DEBUG
-#  define Log Serial.println
-#else
-#  define Log(...)
-#endif
-
 // TODO: read these from Arduino Nano (protocol = ?)
-unsigned long encoder_left_front = 0, encoder_left_back = 0,
-              encoder_right_front = 0, encoder_right_back = 0;
+long encoder_left_front = 0, encoder_left_back = 0,
+     encoder_right_front = 0, encoder_right_back = 0;
 
 DHT environment_sensor(PIN_ENVIRONMENT_SENSOR, DHT11);
 byte environment_temperature, environment_humidity;

    break;
  case REGISTER(LIGHT_SENSOR):
    value = analogRead(PIN_ANALOG_LIGHT_SENSOR);
    Wire.write((byte *)(&value), sizeof(value));
    break;
  case REGISTER(ENVIRONMENT_SENSOR) + ENVIRONMENT_SENSOR_TEMPERATURE:
    Wire.write(environment_temperature);


#include "bb.h"
#include "music.h"

Servo pan, tilt;
Servo left, right;
