Arduino L light always ON

Other Hardware 3rd Party Boards
1

Hi,
I have an Arduino UNO. IDE detects the Arduino but the L light is always on while uploading a=. I pressed the reset button but the L light was always On. IDE shows these error

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x49
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x49
Failed uploading: uploading error: exit status 1

It is possible to change the Arduino microcontroller IC.

2

Yes!

3

Are we sure that's necessary? Have you tried reuploading the bootloader? Doing a manual upload reset? Does it work on a different USB port or computer? Is there anything connected to this board - modules, componants, etc?

Please post the code in code tags and a schematic.

4

It sounds like you're experiencing a common issue with the Arduino UNO. Here are a few steps you can take to resolve the problem:

Troubleshooting Steps:

  1. Check Connections:

    • Ensure that no wires are connected to pins 0 (RX) and 1 (TX) on the Arduino while uploading the sketch.

    • Verify that the USB cable is properly connected and try using a different USB cable or port.

  2. Select the Correct COM Port:

    • Open the Arduino IDE and go to Tools > Port to ensure the correct COM port is selected. If the correct port is not listed, try reconnecting the Arduino.

  3. Reset the Board:

    • Press the reset button on the Arduino UNO just before or during the upload process. This can sometimes help in syncing the board with the IDE.

  4. Check the Bootloader:

    • If the L LED (connected to pin 13) blinks three times quickly when the board is powered on or reset, the bootloader is likely intact. If it doesn't blink, the bootloader might be corrupted.

  5. Update Drivers:

    • Ensure that the Arduino drivers are up to date. You can reinstall the drivers from the Arduino IDE installation directory.

Replacing the Microcontroller IC:

If the above steps do not resolve the issue, it is possible that the ATmega328PU processor is damaged and needs to be replaced.

5

ChatGPT?

6

Yup. I put what I thought was the solution, and ChatGPT extended it into- well, I don't know what to call it.

7

Pretty much the same response I got, only I wanted the OP to work out the answer rather than spoon feeding. :wink: :grinning: :crazy_face: