Arduino COM port doesn t work

Question

I bought an Arduino Uno recently  After getting the necessary cables  I decided to upload an example to the chip   Instead of seeing that Blink  I received an error like processing app SerialException  Serial port  COM1  not found   Did you select the right one from the Tools  gt  Serial Port menu   Yes  I tried that  But even Serial Port Monitor doesn t seem opening  Then again  I get some exception that isn t worth mentioning   After I found out that my Serial COM ports don t work  via Portmon exe   and figuring out that I may even don t have any  there is no COM port in Device Manager   I also tried to download a driver for COM port  but it has also failed   Some say that it s because of my Acer Aspire 5742 s motherboard  Some say that the reason is Windows 7   Long story short  I d really appreciate if someone can help me with my COM port problem and mend my broken dreams

User · Answer

Abstract  Steps of How to resolve  Serial port  COM1  not found  in fedora 17   Today install the packages for Arduino in Fedora 17   yum install arduino  and I have the same problem  I decided to upload an example to the chip  and got the same error  Serial port  COM1  not found    In this case when I run Arduino program  some banner appears which warns me that my user is not in  dialout  and  lock  group  Do you want add your user in this groups  I click in add button  but for some reason the program fail and not say nothing   Step1  recognize the Arduino device unplug your Arduino and list  dev files    ls -l  dev   plug your Arduino and go and list  dev files   ls -l  dev   Find the new file  device  that was not before plugging  for example      ttyACM0 or ttyUSB1   Read this properties   ls -l  dev ttyACM0  crw-rw---- 1 root dialout 166  0 Dec 24 19 25  dev ttyACM0   the first c mean that Arduino is a character device   user owner  root  group owner  dialout  mayor number  166  minor number  0  Step2  set your user as group owner   If you do   groups  lt yourUser gt    And you are not in  dialout  and or  lock  group  Add yourself in this groups run as root    usermod -aG lock  lt yourUser gt  usermod -aG dialout  lt yourUser gt    restart the pc  and set  dev  lt yourDeviceFile gt  as your serial port before upload

User · Answer

Did you install the drivers  See the Arduino installation instructions under  4  I don t know that machine but I doubt it doesn t have any COM ports

User · Answer

I restarted my computer and then opened the IDE again and it worked while none of the above did   Maybe you have to do the things above as well  but make sure to restart the computer too

User · Answer

unplug not necessary just uninstall your port restart and install driver again you will see arduino COM port under the LPT  amp  PORT section

User · Answer

Installing Drivers for Arduino in Windows 8   7     I tried it for Uno r3  but i believe it will work for all Arduino Boards    Plugin your Arduino Board  Go to Control Panel ---  System and Security ---  System ---  On the left pane Device Manger  Expand Other Devices   Under Other Devices you will notice a icon with a small yellow error graphic   Unplug all your other devices attached to any Serial Port   Right Click on that device ---  Update Driver Software  Select Browse my computer for Driver Software  Click on Browse ---  Browse for the folder of Arduino Environment which you have downloaded from Arduino website  If not downloaded then http   arduino cc en Main Software   After Browsing mark include subfolder   Click next ---  Your driver will be installed   Collapse Other Devices ---  Expand Port   its in device manager only under other devices    You will see Arduino Written ---  Look for its COM PORT  close device manager   Go to Arduino Environment ---  Tools ---  Serial Port ---  Select the COM PORT as mentioned in PORT in device manager   If you are using any other Arduino Board instead of UNO then select the same in boards    Upload your killer programmes and see them work        I hope this helps       Welcome

User · Answer

I ve had my drivers installed and the Arduino connected through an unpowered usb hub  Moving it to an USB port of my computer made it work

User · Answer

This fix   solution worked for me  Device Manager --  Ports --  right click on Arduino Uno --  Update Driver Software --  Search automatically for updated driver software

[serial-port] Arduino COM port doesn't work

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