It would be helpful to know what (else) you have connected to the Arduino. Is something connected to the TX and/or RX pins?
LCD ARDUINO
- RS pin (4) digital pin 12
- Enable pin (6) digital pin 11
- D4 pin (11) digital pin 5
- D5 pin (12) digital pin 4
- D6 pin (13) digital pin 3
- D7 pin (14) digital pin 2
- R/W pin (5) GND
What happens if you move the Serial.begin statement before the lcd stuff?
same behavior. Can anyone try this code?