EZ1超音波連接運用在ARDUINO上大問題!

mjm2246

Serial.begin(9600);
   for(int i=0; i < 2; i++) {
       pinMode(ultraSoundSignalPins, INPUT); // Switch signalpin to input
   }
   pinMode(ultraSoundTriggerPin, OUTPUT); // set this pin to output
  //give the sensors time to boot up
   delay(250);
   // send RX pin high to signal to chain to ping
   digitalWrite(ultraSoundTriggerPin, HIGH);
   delayMicroseconds(30);
   digitalWrite(ultraSoundTriggerPin, LOW);
   pinMode(ultraSoundTriggerPin, INPUT); // electrically disconnects the pin
   delay(50);


可以請問這段的意思是什麼
有點看不懂
謝謝