My arduino is struck on uploading and is showing error

I am using an Uno r3 and it is struck on uploading.
Error message -
Sketch uses 1756 bytes (5%) of program storage space. Maximum is 32256 bytes. Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes. An error occurred while uploading the sketch avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xa6 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xa6

Correct board selected?
Is it correctly recognised by your operating system?
Which operating system?
Correct port selected?

Did it work in the past?
What was all connected to the board?

Or another device using the same port? I tried using minicom to communicate with my sketch, which worked fine, except when pushing data from the IDE :slight_smile:

@Rupert909, I would expect a different error message in that case indicating that the port can't be opened or is busy.

There is no option for Uno R3 so I selected arduino uno.
It didn't work in the past, correct port and other things selected.
My arduino uno is working fine but r3 is not.

Remove all shields, sensors and devices from your Uno.

When inserting the USB cable into the Uno, do you see any LED's come on?
Two lights should come on:
ON LED, should light up and stay on,
L LED, should light up and go off

(It is assumed that the USB cable is already connected to your computer system before connecting it to the Uno board)

If your Uno works fine, but your R3 does not, is the R3 a genuine board or a Chinese import? If it is an import then you may need to install a driver. and if it is a genuine R3 then have you examined it carefully for any damage.
It could also be that it needs re-flashing via the ICSP connector.

I doubt that there is a difference. To my knowledge, the R3 added the SDA and SCL pins next to the GND an Aref pins that are located next to pin 13.

What are the ICs closest to the USB connector?

You did not answer all my questions in post #2.

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