Weird Serial Monitor Output

Hi, I've been trying to get serial.print from my arduino but it is printing chars that i didnt ask him to print :expressionless:
anyone knows how to fix this?

Serial Monitor Output:
JÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿJÿ

The sketch im running.
J. Terramoto.

Terramoto--

This kind of output is almost always the result of having mismatched baud rates. I note that your Arduino sketch is transmitting at 38400 baud. Is your serial monitor configured accordingly?

Mikal

Errr...im sorry didnt notice that, i tought that the default baud rate was 9600. thanks!!

J. Terramoto