Good day. I wonder if there is something wrong with my Arduino UNO board because the on thingy is red, like both LEDS are red. I'm doing a project, the blink test and it seems like it won't work because I figured the LEDS should be green, not red. Does anybody know what this means?
The colour of the LEDs has no meaning. Cheap chinese clones like yours don't use the same colours for the LEDs as the official Arduino Uno.
Topic moved !! Please do not post in "Uncategorized"; see the sticky topics in Uncategorized - Arduino Forum.
This is not the official Arduino board. It's a clone. However, clones are functional. Color of LED does not matter. Please check the USB to serial converter IC. If it is the CH340 IC, you need to install the CH340 driver to make it work.
1 Like
On a new board, the L-LED should be flashing (1 second off, 1 second on). If that is not the case
- The manufacturer forgot to load the blink sketch.
- This probably also means that the bootloader is not programmed.
- Your board is faulty.
To check if the bootloader is programmed, press and release the reset button (board connected to USB). When you release the reset button, you should see a couple of quick flashes.
I've already did and everything seems to be working fine in the Arduino IDE now! But the board itself is still blinking red and won't blink according to its delay I set it to like 1000, 500, 50.. Could I be doing something wrong?
Hi @matekayssie.
Are you actually using Arduino IDE?:
https://docs.arduino.cc/software/ide-v2
The reason I ask is that in the picture you shared I see your phone running what appears to be the 3rd party "ArduinoDroid" app. ArduinoDroid and Arduino IDE are two completely different applications so it is important for the forum helpers to know which of the two you are using.
1 Like
Thanks for the clarification. I'm going to ask you to provide the full verbose output from uploading the Blink sketch to your Arduino board using Arduino IDE.
This procedure is not intended to solve the problem. The purpose is to gather more information.
Please do this:
- Select File > Preferences... (or Arduino IDE > Settings... for macOS users) from the Arduino IDE menus.
The "Preferences" dialog will open. - Uncheck the box next to Show verbose output during:
☑compile in the "Preferences" dialog. - Check the box next to Show verbose output during: ☐ upload.
- Click the "OK" button.
The "Preferences" dialog will close. - Attempt an upload, as you did before.
- Wait for the upload to finish.
- Right click on the black "Output" panel at the bottom of the Arduino IDE window.
A context menu will open. - Select Copy All from the menu.
- Open a forum reply here by clicking the "Reply" button.
- Click the
<CODE/>icon on the post composer toolbar.
This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.
- Press the Ctrl+V keyboard shortcut (Command+V for macOS users).
This will paste the upload output into the code block. - Move the cursor outside of the code block markup before you add any additional text to your reply.
- Click the "Reply" button to post the output.
Sketch uses 924 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.
"C:\Users\Matche\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/bin/avrdude" "-CC:\Users\Matche\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf" -v -V -patmega328p -carduino "-PCOM1" -b115200 -D "-Uflash:w:C:\Users\Matche\AppData\Local\Temp\arduino\sketches\139A64C733C9C8999FE9062C68C87AC6/Blink.ino.hex:i"
avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "C:\Users\Matche\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"
Using Port : COM1
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: ser_open(): can't open device "\\.\COM1": The system cannot find the file specified.
avrdude done. Thank you.
I do also have another question, if you don't mind cause this is somewhat a project for us😭 I'm the only one I think that the leds of the Arduino are blinking red. The Arduinos once connected to the laptop turn green with my classmates. And it just won't blink depending on the delay I set it to.
Does COM1 disappear from the IDE (and Windows device manager) when you disconnect the board? If not, it's not the Arduino.
Did you install the drivers as suggested in post #3 by @aliarifat794?
Yes, I did :)) Earlier it was my problem that I couldn't find the port, but I have it now. It does not disconnect somehow..
Under ports, you should have something like the one in red with the board conencted and it should disappear when you disconnect the board.
The COM port will be different.
Any yellow triangles in Windows device manager when you connect the board?
You have a clone, your classmates might have a real one.
That is because you have an upload error; see post #9.
1 Like
Thanks for this! I'd have to contact my teacher😭And yes, there is a yellow triangle with a black exclamatory mark in it (COM1)
Does COM1 disappear when you disconnect the board?
What is the error that you see in Windows device manager? I think gthat it will show when you double click COM1 in Windows device manager, you might have to go through the different tabs.
What are the VID and PID? Not sure if you can get to it but
- Double click COM1
- Select the Details tab.
- Select Hardware Ids from the Property drop down.
For my board with CH340
1A86 is the manufacturer (WCH), 7523 is the product (CH340).
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.