issue with IDE print display

Using Arduino Installation & Troubleshooting
1

hey

im using an arduino pro mini 5v trough FTDI basic.

i got unrecognizable characters when using
** **[color=green]Serial.print[/color]** **

here is my result after running this official example.

2

i find out that the wrong Version selection causes this problem

3.3v 8Mhz instead of 5v 16Mhz

but i want to know the reason please...

does it cause uploading the code with different fuse settings? or not

is it harmful ?

tnx a lot

3

Your image doesn't work.

Unreadable gibberish characters on serial normally indicate that either the ground is not connected between the serial adapter and the board in question, or that the baud rate set in the terminal application is not the same as the baud rate that the other device is using.

Baud rate on the AVR is generated by dividing down the system clock; if you have an 8mhz board, yet compile for 16mhz (or the other way around), the baud rates will come out wrong (because it calculates what to divide 8mhz by to get the baud rate you asked for - if the chip is actually running at 16mhz, the baud rate it gets will be twice what you asked for). All other timing will also be screwed up in this case (ie, millis(), delay(), etc)

Fuses are never changed by uploading a sketch. Fuses are only written when you do "burn bootloader"

4

DrAzzy:
Your image doesn't work.

Unreadable gibberish characters on serial normally indicate that either the ground is not connected between the serial adapter and t....................

thanks a lot for response

I'll fix screenshot for future readers (however its not much important)

5