         Serial.print(aaWorld.y);
         Serial.print("\t");
         Serial.println(aaWorld.z);
+        break;
+      case 'j':
+        Serial.print("j\t");
+        Serial.println(!digitalRead(JETPACK_PIN)); // pin low -> pressed
         break;
       default:
         Serial.print("ERROR - Command ");



#define LED_PIN 13 // (Arduino is 13, Teensy is 11, Teensy++ is 6)
bool blinkState = false;

// MPU control/status vars

    Serial.println(F(")"));
  }

  // Setup Jetpack button
  pinMode(JETPACK_PIN, INPUT);
  digitalWrite(JETPACK_PIN, HIGH); // connect internal pull-up

  // configure LED for output
  pinMode(LED_PIN, OUTPUT);

