I cant upload my sketch for uno

Development Tools Uploading
1

I wrote sketch This :

void setup()
{
  pinMode(13, OUTPUT);
}

void loop()
{
  digitalWrite(13, HIGH);
}

There's no problem in sketch,
but IDE say "cant upload" with this message:
avrdude: ser_open(): can't open device "\.\COM3": �׼����� �źεǾ����ϴ�.

Failed uploading: uploading error: exit status 1

2

What type of PC are you using?
Which version of the Arduino IDE are you using?
Have you checked the COM port assigned to the Uno and assigned it in the IDE?

1 Like
4

Be sure you have the correct board selected and if it is a Nano there is the default bootloader and the old bootloader. You need the old one for the china clones.

6

I selected board, but It's same.

7
  1. Windows
  2. 2.0
  3. Yes, I checked selected com port is COM3.
8

Add: I've tried in IDE1.8, but It's same.

9

This is a Windows or operator error problem, not an Arduino problem. You could try renaming the com port in Windows.

10

Is there anything else using COM3, such as a terminal program? That will need to be closed before you can upload.

11

Have you checked to make sure that you have given the application permission to connect via USB? Windows may want you to give your ascent.

12

Do you have the correct driver loaded?

1 Like
13

I renamed COM3 to COM6, but that has error:
avrdude: ser_open(): can't open device "\.\COM6": ������ ������ ã�� �� �����ϴ�.

Failed uploading: uploading error: exit status 1

14

I closed these program, but nothing changed.

15

Yes, I checked driver, but it's all correct.

16

Add: I'm using korean. Do you know what is this? : ������ ������ ã�� �� �����ϴ�.

17

I see something like that when I get a language the monitor does not understand. Beyond that I cannot offer more help, I do not know.

18

suddenly, I tried once again, It did works.

19

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