avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() a

Hi All,

I am using Arduino UNO development board.
It was working fine last day...Now I am facing this of uploading issue..not able to upload any sketch to board.

Pls help me on this issue...how to solve it

Below is the log messages of arduino IDE when i try to upload sketch to board.

sketch uses 928 bytes (2%) 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.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

Check this:

  1. port - is the device present in OS,
  2. cable,
  3. bootloader - L is blinking 3x at reset.

Did you read http://www.arduino.cc/en/Guide/Troubleshooting#upload ?

As a new user I had this same trouble using IDE version 1.8.8 so I did not have the advantage of going back to an old version. But trying step 2 (check the cable) I found a compatible one on my external HDD which was 0.5m long and substituted for the 1.8m one I had been using. ALL FIXED! I checked the 1.8m cable with the HDD and no problems. Was it the cable length or possibly a bad connection. Experiments required.