Few months ago, I bought cheap arduino nano from china. Instaled all the required drivers, and tried out my frirst program.
Now I tried to upload something new, and I get this error message:
avrdude: ser_open(): can't open device "\.\COM4": System can't find given file.
I also noticed, that Tools->Ports can not be clicked. The device does not even show up in device manager.
Any Ideas?
In my first program I did also set pin 0 and 1 (RX/TX) as outputs and used them to flash LEDs. I am aware, that this probably prevents new code from beeing uploded, but it should not prevent from the device from shoving up at all. The computer talking to the USB driver, not the microcontroller.
Go to Device Manager and find the Arduino COM Port
Go to the Advanced properties of the port
Set the port # to COM1
Then un-plug your USB and plug it back in.
Related
1.I started with esp. 32 i used arduino IDE it only showed COM1 in PORTS. when i was uploading the code i pressed the boot button when connecting..... appears in the window but still an error (timeout....) occurs and code doesn't upload.
i installed the drivers but whenever i plugged in the usb cable a notification pops up that the computer doesn't recognize the device. i installed ch341 but it says the the drivers are preinstalled.
same problem appear with esp8266 node mcu.
Then using the same cable I started working with esp8266 no error popped up it had two options in PORT COM1 and COM4 I choose COM4 and I uploaded the blink code. it worked fine but after that i upload the WIFI SCAN code it started showing same problem as esp32... i disconnected it and connected again error popped up that it doesn't recognized by computer. and furthermore now it only shows com1 in ports option and when I press flash button the code doesn't get uploaded it shows timed out error. i disconnected and connected many times but it doesn't working.
are you setting like this??
this is my setting on the arduino
I mean you can try to install the esp32 USB port library CP210x_Universal_Windows_Driver.exe.
if your system does not detect esp8266 or NodeMCU boards while you installed all possible drivers, as mentioned in this GitHub issue change your USB wire cause the wire maybe is for just charging and not transferring data!
changing it worked for me!
My Arduino Uno was all set up and was working fine.
Project: Arduino controls a 9v motor depending on the command given. As the Arduino only provides 5v, I added a 9v battery to it through a transistor
I decided to add new code into the Arduino but when I tried it failed. I have uploaded code thousands of times before (successfully) all of a sudden the IDE keeps giving the following message
avrdude: ser_open(): can't open device ".\COM3": Access is denied.
I have looked up for a lot of solutions on this forum and elsewhere. Here are the things I have tried so far:
Changing the COM port
Disabling all the other devices CONNECTED to COM
Tightening the CONNECTIONS
Re installing all the drivers and the IDE
Rebooting the system
Using another laptop to upload code
All the above have given me the same output for some reason. The built in LED light and the power LED switch on when the board is connected to a power source (my laptop). Could the board have been damaged by any chance? How can I check if the board is spoilt? Should I buy a new board?
this may help;
remove the mcu from the board and connect the board to your PC.
try to open the com port.
if it opens, short TX pin to RX pin.
send some data and check if you are getting the data back. this way you can make sure your usb-ttl is not damaged.
With my verry limited experience with Arduino I've seen that the IDE sometimes resets the saved arduino on startup. Press extra -> Board -> yourboard and try again.
make sure you have the right ports COM1 and COM1
activate it too in arduino
Once it happened to me that a defective USB cable was the culprit. For one board it gave messages like
avrdude: stk500v2_ReceiveMessage(): timeout
But for another board I also got these messages "can't open device - access denied". It's always worth to try another cable.
I am trying to upload this firmware sck_beta_v0_8_6 via Arduino 1.0.5-r2.
I have chosen LilyPad Arduino USB as the board. The device is a Smart Citizen Kit Urban Shield v.1.1.
The upload fails with the following error message:
Found programmer: Id = "BÛR"; type =
Software Version = . ; Hardware Version = .
avrdude: error: buffered memory access not supported. Maybe it isn't
a butterfly/AVR109 but a AVR910 device?
What am I doing wrong?
Sometimes, a different USB cable will make all the difference. There is a wide range in the quality of cables on the market, and sometimes, you get one on the ragged edge of acceptable.
The Arduino lilypad seems to be particularly susceptible to this. Glad this helped.
Press the Reset Button before upload the code, until you hear the "unplug" sound (in windows). Open the IDE and try it again
I had the same error message trying to upload a sketch to an Arduino Leonardo board from a Levovo laptop using Arduino ver 1.0.6. Both Device Manager and Arduino showed the board connected on COM3. Arduino also gave an error message that COM3 was being used by another App. I tried changing USB cables but got the same message. What worked was changing the USB outlet from the top right rear on the Lenovo to the bottom right rear outlet. It connected on COM8 and I was able to upload the sketch. Understand there are speed differences between the two outlets. Now all I need to do is figure out why I cannot upload sketches to the same Leonardo board on my HP laptop with Windows 10 and the most recent Arduino version. Connects on COM6 but hangs up when uploading. (Note: Also had to edit some Arduino library files that worked on ver 1.0.6 but showed compile errors in the latest version.)
I had the same error, but I later found that I had the wrong Arduino type selected, instead of Nano I had Yun.
I had the same issue when trying to upload code into Arduino Micro ( Chinese clone ). Spending hours on Google, flashing new bootloader - still nothing. Physical reset and opening COM port with boundrate 1200 doesn't work. Why?
I HAVE ATMEGA168 INSTEAD OF ATMEGA32u4!
Google is telling, that Arduino Micro got Atmega32u4, but my clone got Atmega168! First of all, check what atmega type do you have by lookup on black soldered chip on Arduino.
So instead of choose "Arduino Micro" on "Board" menu, i choose Arduino Nano and everything works!
I get this same error, avrdude: error: buffered memory access not supported also with garbage-looking output with programmer id # with versions ., when I point avrdude at the serial port of the stock main firmware of my Leonardo-compatible breakout board instead of the serial port offered during the bootloader; it seems that the latter is what avrdude can program?
The normal initial output when actually connecting to the bootloader would be something like:
Connecting to programmer: .
Found programmer: Id = "CATERIN"; type = S
Software Version = 1.0; No Hardware Version given.
To get to the bootloader you can either
press the reset button (if you don't have a reset button, connecting reset to ground), or
briefly connect to the main firmware's serial port at 1200 bps and disconnect
The bootloader will present a different serial USB device than the main firmware's serial USB device, so it may get assigned a different serial port number in your OS, usually the next available one. For instance in Windows my Leonardo-compatible main firmware was assigned COM3 and the bootloader was assigned COM4.
A python script, courtesy of https://nicholaskell.wordpress.com/tag/leonardo/, for doing this serial 'knock':
reset.py:
#!/usr/bin/env python
import serial, sys
serialPort = sys.argv[1]
ser = serial.Serial(
port=serialPort,
baudrate=1200,
parity=serial.PARITY_NONE,
stopbits=serial.STOPBITS_ONE,
bytesize=serial.EIGHTBITS
)
ser.isOpen()
ser.close() # always close port
In Windows land, I have a cmd script for using this in a virtualenv
reset.cmd:
"C:\Program Files (x86)\Python37-32\Scripts\virtualenv.exe" pyreset_virtualenv
pyreset_virtualenv\Scripts\pip.exe install pyserial
pyreset_virtualenv\Scripts\python reset.py COM3
pause
adjust to suit your serial port and python path.
Either way, after getting the bootloader connected, you have a brief window of a couple of seconds where avrdude can connect to the new serial port to start programming before the bootloader will go into the main firmware again, at which point you'll have to do the reset again. So, once you figure out the bootloader serial port, you'll want to prepare the avrdude command line to run in advance, so you can launch it without delay after the reset.
While this answer isn't specific to the lilypad, you need to reset the board to write or read from/to the memory. However, If you are using avrdude in the terminal you must send a specific baudrate(1200 for the Leonardo) then close, wait 2 seconds, and open the port. At that point you can read and write to and from your Arduino. I achieved this using python.
Along the lines of:
Import serial
Import time
Import os
Seri=serial.Serial(yourConnectedPort, specificBaudRate)
Seria.close()
time.sleep(2)
Seri.open()
os.system(your avrdude command)
For the past week I have been programming an Arduino Uno with a computer running Windows 7. When I first started, I found the device on COM6 and was able to upload code no problem. Recently it suddenly stopped receiving code under the error:
Serial port 'COM6' not found. Did you select the right one from the
Tools > Serial Port menu?
The Serial port menu though is grayed out. Research has told me to open up Device Manager and update drivers but there is no other devices tab in my Device Manager. The Arduino is run off the power of the USB cable and runs the code I uploaded a few days ago just fine. What can I do to be able to upload code to the Arduino?
Update:
I installed the Arduino software on another computer and it does not recognize the Arduino either. One of the comments indicates that this could be a problem with the FTDI chip. How can I test if this is the case, and if it is, can I fix it?
There are two types of cable:
Charging Cable
Data Transfer Cable
So try changing the cable, if you have already tried every USB driver and port; or else
Install a new driver using this link, http://www.wch.cn/download/CH341SER_MAC_ZIP.html.
But after installing the driver, if it doesn't work, then change the cable.
For Linux:
To solve the problem, simply run the IDE as super user, so go to terminal and type 'sudo arduino'.
To solve this problem permanently:
In the terminal, run 'gksudo gedit'
In gedit, open the /usr/share/applications/arduino.desktop file.
Change the line Exec=arduino
to Exec=gksudo arduino. Save the file.
Similarly, do the same for Windows...
Also try to re-install Arduino driver.
The Arduino probably started using a different port. When you plug Arduinos into a different USB port it sometimes defaults to a new COM port. Check your device settings for which ports are being used and try each of those. Also try plugging it into a different USB port (if no ports are displayed) and it should register with a new COM. If that fails reboot your machine and repeat the above. If that fails reinstall the Arduino USB driver and repeat above. If that fails you might have fried your Arduino's USB chip (or some other hardware on the Arduino).
For Linux: Vinayk93 is completely right. Adjust the serial port's access rights like so:
$ cd /dev/ ; ls -l ttyA* -- find the right portname, then
$ sudo chmod 666 ttyACMx -- x is 0 or 1
I have a number of Windows 2000 systems that we are trying to use to program the new Arduino Uno and Mega devices. These boards now come with a USB connection, an upgrade from the prior FTDI. I'm not able to download the Arduino code into the board from a Windows 2000 system
The supplied drivers are *.inf files that modify the standard USB driver that comes with Windows (in this case Windows 2000).
I go through the process of setting the port, setting the device and doing the download. The download fails, and the apparent error is that the PC can not communicate with the board. I've checked the port, adjusted the baud rates, etc. I've even moved the port number from a high port number (ie COM12) to a lower port (COM2) without any success. I do see activity on the rec/xmt lights on the Arduino board, so some type of data is being sent and received.
I'm looking for:
Someone who has been able to download files from Windows 2000 to the Arduino
or
A way to shim inside the USB driver to be able to watch the traffic going up and down to the board so I can continue to debug this.
or
Some general tips for things to look at in the .inf file that need to be set/not set to make it work on Windows 2000.
I know the boards work I've used them on a different set of Windows XP systems. So I know to some extent the install is good and that most of what I have works.
Full dumps can be found on the Arduino forum, http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1291090110/.
This is the information produced by the AVRDude program while it's trying to download the code.
this could be a long shot, but I jsut recentlz had problems uploading too. Fist of all, how long is the USB cabele you are uploading from? Mine in one case was too long and th arduino woul lose sync. Secondly, and this might just be a silly oversight (like i did) do you have things wired in the digital pin 0 and 1? These are used for the communication, and if there is anything else plugged in to them the upload will also fail.
As I said, long shot but those were two errors I had.