   if (v <= MAX_POWER && v >= MIN_POWER) {
     return v;
   } else {
+    Serial.println("DANGER: too much V!");
     return 0;
   }
 }

void setup() {
  cpu_irq_enable();
  Serial.begin(115200);
  Serial.println("All power to the engines!");
  delay(2000);
  
  motor.init();
  stopEngine();

#define MAX_POWER  400
#define MIN_POWER -400

// Command interpreter logic
const static boolean DEBUG = false;

// Accessory descriptor. It's how Arduino identifies itself in Android.
char accessoryName[] = "UDOO Silkworm jeep";
