 }
 
 void loop() {
+  // Indicate we're up and running.
+  statusLight(1);
+
   int16_t ax, ay, az;  // g forces
   int16_t gx, gy, gz;  // degrees/second
   int16_t mx, my, mz;  // TODO: learn wtf data this is.

float scale(int16_t value, float scale_factor) {
  return value / scale_factor;
}

  Serial.print("\t");
  Serial.print(scale(gz, GYRO_SCALE));
  Serial.print("\t");

  // TODO: complete this.
  // write raw magnetometer values (??)
  Serial.print(mx);
