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Ошибка открытия последовательного порта «COM3»
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Во первых извените но на схеме допустил одну ошибку, нарисовал, что резистор подключается к Pin9, а на самом деле использовал Pin8.
Ну а во вторых: После того как моя плата (после неудавшейся заливки скетча) простояла подключенная к УСБ порту длительное время я заметил, что микросхема mege328 начала греться, не придется ли тогда менять этот контроллер и если да то как его перепрошить?
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Переткни шнур, не поможет — перезагрузись и пропробуй снова
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И перетыкал шнур и перезагружался, даже просто выключал комп и немного погодя включал обратно все равно не хочет заливать программу в ардуино и выдает сообщение об ошибке какое я привел выше
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Значить, порт падох. Или СН340
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Что это CH340 и можно ли его заменить
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Вообще на своей плате Arduino UNO я не нашол микросхемы CH340, а к светодиодам TX и RX дорожки подводятся от mega16U2
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Вполне может быть.
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И что тогда моей плате пришол конец, ее больше нельзя будет востановить
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Приветствую всех форумчан!
У моей платы Arduino ONU что то случилось с преобразователем интерфейса USB и теперь на плату я не могу загрузить новый скетчь ардуино. Но вот в книге Джереми Блум «Изучаем ARDUINO» в описании устройства плат я прочитал, цитирую: «Если у вас есть программатор, то можно удалить загрузчик из своего контроллера ATmega и программировать его с помощью внешнего программатора.». Это что можно значит достать из платы микроконтроллер ATmega328 и в другой монтажной плате через разъем внутрисхемного программирования ISP прошить его программой созданной в Arduino_IDE, но только как это можно сделать и какую программу использовать для прошивки.
Arduino com port keeps getting busy
I have got an Arduino Uno R3 on which I have an accelerometer that I’m playing a bit with. This setup has worked for quite a while now, everything working from uploading to checking the serial output.
Today I started having problems with the com port reporting busy or not connected at all. When I use the default IDE it cant find the arduino at all but when I use a modded IDE (Arduino ERW 1.0.5) seems to find the port to communicate on but it reports it being busy.
I have reinstalled the driver like 5 or 6 times now and searched for any other driver that might work but they wont change anything. I have also checked that my pc actually detects the arduino which it does, it is listed among the COM ports on Device Manager. I also tried changing the Com port from COM3 to COM4 and still it worked for like 3 uploads and then the COM port kinda «disappeared» from the serial port list on the IDE.
EDIT: Weirdly, after closing some programs that seem to have to do with serial communication it works. I have to look into what I close and when.
EDIT2: For now it seems that processing sometimes didnt close properly when not using the stop button on the processing application which then didnt close the connection to the arduino. I havent had any problems since I started to use the Stop button on processing.
Win 8.1 Latest driver and IDE(an modded IDE called Arduino ERW 1.0.5 seem to work a bit better but have the same issues)
One thing I noticed is that if I press the reset button when it starts again it wont send anything through serial, is it defaulting to the Blink program after a reset or what?
Error opening serial port ‘COM1’. (Port busy)
Im using the arduino Micro pro to read the data out of a temperature sensor (lm35). The program is compiling and NOT uploading, but when I try and open the serial monitor is says: Error opening serial port ‘COM1’. (Port busy)
3 Answers 3
I’ve got an idea. Your board isn’t being recognized. Try unplugging the arduino and see if Com 1 is still there. Sometimes it can recognize mice and other devices as Com 1 or 2 instead of your arduino.
On some of my development machines after everything settled out my devices will show up on Com 4 and 5 when I am working on two at a time.
If this is not the case go into the device manager and see if you can see the board listed.
I would also wonder if you have your sensor hooked to digital pins 0 and 1. These pins are used for your serial line on usb. So if you have anything such as a sensor hooked to them it may be generating data keeping the line busy instead of it being able to negotiate.
I had this happen when setting up hc-05 for the first time. I realized I had to keep the chip off while flashing or I would end up with errors or Com busy.
Please provide your pinout and basic information about the Com ports available on the ide. Also consider that you will need to specify the correct board as it will default to an uno.
Programmer not in sync issues generally occur because the board is recognized but cannot be written to for one reason or another.
- the board has something plugged into digital 1 and 0 which are serial i/o pins
- the board programmer is busy running your last batch of code
- usb error
- try a different cord
- try unplugging potential wiring issues and see if it can be written to without anything on it
- try holding down reset on the board until the board when you try to write to it until just after it finishes compiling to clear any potential programing issues
In my experience mega have a tendency to suffer from the last one.
Arduino Ide Port in the tool is greyed
I have installed Arduino IDE 1.8.5 I in my Laptop and in UBUNTU 16.04 LTS The option in Tools of PORT is grayed. I want to use Arduino Uno on it but i can’t fix it.
2 Answers 2
I think it is permission issue as in similar answer.
Add your user to the appropriate group — dialout with the command below:
then logout and login back.
I solved following serial port related problems in ubuntu 18.04 as follows:
Problem 1 : Cannot open /dev/ttyACM0: Permission denied
Solution : Grant permissions to read/write to the serial port with this terminal command —> sudo chmod a+rw /dev/ttyACM0 Here replace tty port with your respective ubuntu port.
Problem 2 : Failed to open /dev/ttyACM0 (port busy) Solution : This problem appears when serial port is busy or already occupied. So kill the busy serial port with command —> fuser -k /dev/ttyACM0 . Here replace tty port with your respective ubuntu port.
Problem 3 : Board at /dev/ttyACM0 is not available Solution : In this case your serial port in tools menu will be greyed out. I googled a lot for this, but I none of solution worked for me. Atlast I tried different arduino board and usb connector and it was working for me. So, if you are having old arduino board (can be solved using required drivers) or defected arduino board then only this problem arises.
Arduino Tools > Serial Port greyed out
I am running Debian 7 (Linux Crunchbang) and wanted to use The Arduino IDE to program my Arduino UNO. To do that I installed the package arduino . When I started the Arduino I was asked to add my user to the dialout group. So I did with sudo usermod -a -G dialout .
However when I start the Arduino IDE using arduino in the commandline the IDE opens but I am not able to load my program to the Arduino. The error message is «Serial port COM1 not found. Did you select the right one from the Tools > Serial Port menu?» And when I went to select the Serial Port, the option «Tools > Serial Port» is greyed out.
I thought it is because I did not grant read and write permissions on my usb port (ttyACM0). So I did sudo chmod a+rw /dev/ttyACM0 but the option is still greyed out.
18 Answers 18
chdmod works for my under debian (proxmox):
For installing arduino IDE:
Add the user to dialout group:
Try with the File > Examples > 01.Basic > Blink, change the 2 delays to delay(60) and click the upload button for testing on arduino, led must blink faster. ;)
sudo arduino is the only way I get the Arduino IDE working (serial port and upload) on ubuntu 12.04 (64) Indeed the serial port to use is /dev/ttyACM0 in my case too. The other two (ttyS4 and ttyS0) gave an error when trying to upload to Uno. Have fun
Try Disconnecting the usb and plugging it back in. Its only grayed out because the ide cannot find any com ports that the uno has been plugged into.
another solution is to try all the com ports and see which one works.
finally if all fails try restarting your computer.
Close all instances of the arduino IDE open
/.arduino/preferences.txt and look for the line:
and change it to your port:
you may have to log out for it to take effect
open $arduinoHome/arduino in text editor and modify last string:
(set property gnu.io.rxtx.SerialPorts to /dev/ttyACMN,where ttyACMN is name of serial port which you use)
it may temporary fix bug in rxtx library. helped me to upload sketch with arduino1.0.5 IDE.
Maybe would helpful for someone.
In my case this turned out to be a bad USB hub.
The ‘lsusb’ command can be used to display all recognized devices. If the unit is not plugged in the option to set the speed will be disabled.
The lsusb command should output something like the string ‘Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO)’ if your device is recognized. Mine was an RFDuino
In my case I solved this issue by uninstalling the version of Arduino that I installed via apt-get and instead installed via the official website.
With the latest version of Arduino I didn’t have the problem described on Ubuntu 18.04.
So I did with sudo usermod -a -G dialout .
You need to log out after you add yourself to a group so those changes are applied. Just log out and log in again and the menu should be available.
install rx-tx lib for java run this command in terminal
help regconize usb device
I solved following serial port related problems in ubuntu 18.04 as follows:
Problem 1 : Cannot open /dev/ttyACM0: Permission denied
Solution : Grant permissions to read/write to the serial port with this terminal command —> sudo chmod a+rw /dev/ttyACM0 Here replace tty port with your respective ubuntu port.
Problem 2 : Failed to open /dev/ttyACM0 (port busy) Solution : This problem appears when serial port is busy or already occupied. So kill the busy serial port with command —> fuser -k /dev/ttyACM0 . Here replace tty port with your respective ubuntu port.
Problem 3 : Board at /dev/ttyACM0 is not available Solution : In this case your serial port in tools menu will be greyed out. I googled a lot for this, but I none of solution worked for me. Atlast I tried different arduino board and usb connector and it was working for me. So, if you are having old arduino board (can be solved using required drivers) or defected arduino board then only this problem arises.