Hi, I have a Uno R3 and im getting this message when i try to upload the sketch.
"avrdude: stk500_getsync(): not in sync: resp=0x30"
And i can't see the Uno on my com port list, its showing up as a USB with a "!"
Any ideas ?
I run with winXP and Arduino UNO R3 and I have the same problem
ports (COM and LPT) : ! Arduino UNO R3 (COM20)
device status : this device cannot start (Code 10)
I tried COM3,4,18 with no more result.
Watch this video it may help. Jeremy in this video gets you setup and if I remember correctly he tells you the different setup steps for different operating systems and if I"m not mistaken theres one difference with windows xp that I think may be your problem.
Thanks styler for this very good tuto.
In the meantime, I have solved my problem. I replaced the old usb cable (which was electrically ok) with a shielded usb 2.0 cable, and everything works fine. So BEWARE OF THE CABLE QUALITY WITH ARDUINO :)