Hi
I just got a new Arduino Uno board. Trying to connect it to my computer (Win 10) using the USB, the L led starts to blink and the board is not working.
What is the problem and what can solve it?
Rami_Levy:
the L led starts to blink
That's normal and doesn't indicate any problem.
Rami_Levy:
the board is not working
Please explain exactly what you mean by that.
on a diffrent board i have the L led is on and not blinking
I can't upload any code to the "blinking board"
i get those msgs:
Arduino: 1.8.7 (Windows 10), Board: "Arduino/Genuino Uno"
Sketch uses 8410 bytes (26%) of program storage space. Maximum is 32256 bytes.
Global variables use 574 bytes (28%) of dynamic memory, leaving 1474 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "\.\COM3": The system cannot find the file specified.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
processing.app.SerialException: Error opening serial port 'COM3'.
at processing.app.Serial.(Serial.java:147)
at processing.app.Serial.(Serial.java:82)
at processing.app.SerialMonitor$4.(SerialMonitor.java:101)
at processing.app.SerialMonitor.open(SerialMonitor.java:101)
at processing.app.AbstractMonitor.resume(AbstractMonitor.java:104)
at processing.app.Editor.resumeOrCloseSerialMonitor(Editor.java:2078)
at processing.app.Editor.access$1400(Editor.java:114)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2056)
at java.lang.Thread.run(Thread.java:748)
Caused by: jssc.SerialPortException: Port name - COM3; Method name - openPort(); Exception type - Port not found.
at jssc.SerialPort.openPort(SerialPort.java:167)
at processing.app.Serial.(Serial.java:136)
... 8 more
Error opening serial port 'COM3'.
Invalid library found in C:\Program Files (x86)\Arduino\libraries\StepperMotor: no headers files (.h) found in C:\Program Files (x86)\Arduino\libraries\StepperMotor
Invalid library found in C:\Program Files (x86)\Arduino\libraries\StepperMotor: no headers files (.h) found in C:\Program Files (x86)\Arduino\libraries\StepperMotor
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Start by just uploading a simple example - blink , and just vary the times . You have all sorts of library related errors with the sketch you are trying to upload.
Use tools/port to select the port to which your Arduino is connected.
Make sure are using a data and not a charger usb lead.
Finally , if this is a non genuine board ,it may need an additional driver ( CH340) for it to work .
The error messages tell you a lot about what is wrong .
A few people have reported win 10 issues , but I now nothing about that - Mr Google will
hammy:
You have all sorts of library related errors with the sketch you are trying to upload.
Where do you see that?
Select the correct port from the Tools -> Port menu. COM3 doesn't exist, but was saved because you'd previously uploaded to something on that port.
After the bit that says “invalid library “
It’s always a good idea if you are having a problem , but you don’t know the source , to try and upload a basic example , which you know will work and if it doesn’t , produce errors you can fix.
Invalid library found in C:\Program Files (x86)\Arduino\libraries\StepperMotor: no headers files (.h) found in C:\Program Files (x86)\Arduino\libraries\StepperMotor
Invalid library found in C:\Program Files (x86)\Arduino\libraries\StepperMotor: no headers files (.h) found in C:\Program Files (x86)\Arduino\libraries\StepperMotor
[\code]
I may be the driver software problem with your computer. Even i had the same problem and i checked the driver signature enforcement which worked. So you try to install the driver software correctly
hammy:
After the bit that says “invalid library “
Thanks, must have been blind.
The invalid library message indicates that there is an invalid library installed. However, because it attempted to upload, the invalid library is not included in the sketch - that message is unrelated to the issue at hand. The sketch compiled successfully, but failed to upload
I'm a little disappointed in some of the other posters trying to be "helpful" here, throwing out suggestions that are completely unrelated to the problem - the problem is bloody obvious from the errors he posted: It's set to use a port that doesn't exist.
With the Arduino plugged in, is the tools -> port menu available, or greyed out?
If it is greyed out, either:
Cable not plugged into the Arduino completely (someone else had this problem earlier today, which is why I mention it - the power pins make contact before the data ones).
Bad cable - there is a plague of bad cables; some of the manufacturers of clone arduino "kits" seems to be using substandard USB cables with very high failure rate; for mini/micro USB, there also exist "charging only" cables.
Driver problem. Is it a clone? Check the markings on the black IC near the USB port - it'll be either an atmel 16u2 (use official drivers, it's a faithful clone or official board), a CP2102, or CH340G. If it's one of the latter two, google the part number, your OS, and the word drivers, download and install.
If using USB 3.0 port, try a USB 2.0 one (or put a USB 2.0 hub between computer and arduino) - most USB 3.0 implementations work fine, but occasionally you'll encounter one that doesn't like some USB 2.0 devices.
If the Tools -> port menu is not greyed out, select the available port from it. If there's more than one, unplug the arduino and reopen tools -> port menu. Note which port disappeared - that's the one for the arduino. Plug it back in, and select that port (which will now be there again) from tools -> port.