For testing, try putting delay(500); into loop(). I suspect you are sending too much stuff to the Serial Monitor and the Arduino is choking on it. Be aware that loop() repeats 1000 times per second or more.
...R
For testing, try putting delay(500); into loop(). I suspect you are sending too much stuff to the Serial Monitor and the Arduino is choking on it. Be aware that loop() repeats 1000 times per second or more.
...R