Go Down

Topic: avrdude: stk500_getsync(): not in sync: resp=0x30 (Read 1 time) previous topic - next topic


Jun 22, 2012, 06:09 pm Last Edit: Jun 22, 2012, 06:21 pm by rubalchib26 Reason: 1
Please help. I am using arduino uno. This one [9:31:09 PM] rubal chib: http://www.rhydolabz.com/index.php?main_page=product_info&products_id=626

I am using a cable detachable with my usb to serial for connecting it to the uno.
https://docs.google.com/open?id=0By2gprBNjzquTGVoS0J4cjR6b1E. The cable part of it.

I have windows xp. and uno driver is successfully installed https://docs.google.com/open?id=0By2gprBNjzquZUE5Z2Frb1ZsMHM

the problem i am facing is that When i tried uploading led blink sketch with correct com port selected and device too. I am not able to upload it. It gives an error:    "avrdude: stk500_getsync(): not in sync: resp=0x30"
i tried re installing driver etc.
Please tell me wot probable error it could be. Wire problem? or anything else?

Also the Rx Tx pins are not blinking when i try to upload code.
Boatloader is installed cos when i press reset the L led blinks.
also i read somewhere uno doesnot have a usb port but has a unique id instead??

Please help


Can you upload with verbose output enabled (in the Preferences dialog) and post the output here?

It might be an anti-virus program or firewall is preventing access to the serial port.  Or that some other program has it open already. 


If your computer does not recognize the Arduino, try this:

Do not use the computer's USB power.  Power up the Arduino before connecting to the computer's USB port.  Powering-up the Arduino while at the same time connecting to the USB port does not allow the Arduino's circuitry and software time to settle to a state that will allow it to negotiate with the computer's USB port.

Whenever you get the 'not in sync' error, disconnect and reconnect the USB port.

Post a reply and tell me if this helped or not.


Thanx i swicted to ubuntu and it wrked. and wenever i get this error i remove the cable and again try it wrks mostly. Will use external power if again face the same problem

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131