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Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate

XSPACE18 10653 17
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How do I fix Arduino Uno upload failures when COM3 is denied or the board is not recognized as a serial port?

The most likely fix is to install the correct Arduino Uno USB driver manually, because the board uses the Mega16U2 interface and not an FTDI chip. [#16575894] [#16573135] Open Device Manager, update the Arduino device driver, and point Windows to the Arduino IDE drivers folder (for example `C:\Program Files (x86)\Arduino\drivers`), then choose `Arduino Uno` from the list instead of letting Windows search automatically. [#16575894] [#16576040] If you installed a downloaded driver from the internet, remove it and use the signed driver included with the Arduino package instead. [#16576451] The fact that COM3 stays the same when you plug the board into a different USB socket is normal; Windows assigns the COM port to the device, not to the physical USB socket. [#16573135] If the error is specifically that COM3 access is denied, check which program is holding the port open; one suggestion was to use Process Explorer and search for `serial`. [#16570636] [#16573060]
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  • #1 16570567
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    Hello
    I am a beginner user of arduino uno and I have trouble uploading any project to arduino
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  • #2 16570587
    Ture11
    Level 39  
    Posts: 5406
    Help: 573
    Rate: 1116
    Board Language: polish
    Ok, first know that you showed us the screen where the most important information is hidden ... (I'm talking about screen # 3).
  • #3 16570625
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate

    Is that it
  • #4 16570636
    Ture11
    Level 39  
    Posts: 5406
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    Board Language: polish
    Exactly, about this message in the last photo. Access to port COM3 is denied ... Something is blocking this port, are you able to determine what is taking access to it?
  • #5 16570661
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    I do not know how to check it, but when I change the USB cable, the device manager does not change the port and COM3 stays all the time and should probably change to a different one.
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  • #6 16570915
    Ture11
    Level 39  
    Posts: 5406
    Help: 573
    Rate: 1116
    Board Language: polish
    And if a friend wants to upload the code, he or she pushes "Upload" or "Upload using the programmer"?

    In this case, you have to click the "Upload" button.
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  • #7 16571751
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    From the beginning I clicked "upload", which means everything should be fine.
  • #8 16572413
    qavr
    Level 12  
    Posts: 60
    Help: 6
    Rate: 5
    Board Language: polish
    Reinstall arduino drivers.
  • #9 16572773
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    I already tried to reinstall, it did nothing.
  • #11 16573135
    Anonymous
    Level 1  
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  • #12 16573997
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    I have already done everything you wrote before.
    emarcus wrote:
    Make a location note: Exp. (3 *). By changing the socket of the plug you will observe changes in the location of the socket, remaining constantly in the same configuration. for example com3 (default configuration).
    By opening the other tabs you will learn more details of this configuration.

    With the Device Manager still open, disconnect the USB cable connecting the Arduino.
    With proper configuration, this line should disappear from the list of connected devices. If both items disappear (com1 too), this would indicate errors in the configuration of this device.


    By changing the socket, the computer sees this change, and after disconnecting the plug, the computer stops seeing the COM3 port. Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate
  • #13 16574439
    Anonymous
    Level 1  
  • #14 16575225
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    emarcus wrote:
    This only confirms the physical connectivity (of "some device" ;) arduino with a computer, but this does not prejudge the correct communication for what the appropriate driver is used.
    In the previous post I asked about the type of circuit in the USB bridge of your board, which you deigned to skip.
    From the information you provided, it appears that you have installed the driver for arduino containing the FTDI chip as it was for Decimil and NG A-ino. I suspect your board is not built on this system, but rather on the cheap Chinese clone CH340 / CH341, which does not work with the original FTDI driver.
    If your board is similar to one below, then you need to install a different driver.

    The driver packet included in the Arduino IDE installation kit does not contain the driver for this option, so find yourself.
    Try searching the Internet for the right version of Windows, or here:
    http://www.wch.cn/download/CH341SER_EXE.html -original Chinese website,
    or
    http://sparks.gogo.co.nz/ch340.html

    e marcus


    I apologize for the omission. I have the original arudino uno board from the botland store, the board has a USB type A port

    https://botland.com.pl/arduino-moduly-glowne/1060-arduino-uno-r3.html

    Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate
  • #15 16575894
    Anonymous
    Level 1  
  • #16 16576040
    XSPACE18
    Level 7  
    Posts: 10
    Rate: 3
    Board Language: polish
    emarcus wrote:
    XSPACE18 wrote:




    I apologize for the omission. I have the original arudino uno board from the botland store, the board has a USB type A port

    https://botland.com.pl/arduino-moduly-glowne/1060-arduino-uno-r3.html


    So as I expected; Although this is not a clone, you still installed the wrong driver.
    There is no FTDI chip (FT232RL) on your board.
    Also, as I mentioned, older, original / authentic versions of Arduino were built with this system, but the current ones use a cheaper Mega16U2 processor that fulfills this role by having a suitable soft in them (it is even in the same place on the board) ...
    You will need to complete the correct driver installation ...
    This time (as I wrote earlier), do not choose automatic search, but indicate which driver you want to install.
    During the procedure ' update driver '(in a Polish-language system it probably will be' update the driver 'or something similar), indicate exactly the right path to the driver, for example:
    C: \ Program Files (x86) \ Arduino \ drivers; - select: including subfolders;
    To avoid further automatic errors, click rather on the bottom inscription: that you want to choose the driver. instead of clicking 'NEXT'
    From the list shown select 'Arduino Uno' and then 'Next'.
    This should solve your problem.
    For example, I give the difference between these variants (what you should get):
    Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate

    e marcus


    I've tried this before and I'm showing you that the driver is up to date. I also looked into the drivers folder and found FTDI drivers, but there were no LLC drivers anywhere. So I looked for LLC drivers on the internet, installed but now there is another problem because arduino does not see the serial port.

    Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate Beginner Struggles: Difficulties Uploading Projects to Arduino Uno Plate [Quote = "emarcus"] [quote = "XSPACE18"]
  • #17 16576451
    Anonymous
    Level 1  
  • #18 18430100
    Serwik
    Level 13  
    Posts: 107
    Help: 3
    Rate: 19
    Board Language: polish
    Or did you cope with this problem buddy - I have the same?

Topic summary

✨ The discussion revolves around a beginner's difficulties in uploading projects to an Arduino Uno board. Key issues identified include access denial to COM3 port, potential driver misconfigurations, and the need for correct driver installation. Users suggest checking for software conflicts, ensuring the correct driver for the board's USB bridge (Mega16U2) is installed, and verifying the connection through the Device Manager. The original poster confirmed they have the authentic Arduino Uno but faced challenges with driver updates and serial port recognition. Recommendations include using the Arduino IDE's driver package and avoiding unverified drivers from the internet.
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